Glossary

for B2C apps

Gamification & Engagement Engine

The StriveCloud Glossary

Your reference guide to user engagement, retention psychology and applied gamification. Everything product teams need to analyze churn, build habits and optimize user journeys, explained in plain language.

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75 terms

Accomplishment

Accomplishment is the motivation to make progress, build skills and overcome challenges. In Yu-kai Chou's Octalysis framework it is the core drive called Development and Accomplishment. People feel it when they reach a goal that took real effort, such as finishing a course or hitting a personal record.

Achievements

An achievement is a defined goal in an app that a user completes by taking a specific action or reaching a set threshold, such as finishing ten lessons. Completing it is recorded on the user's profile, often with a badge, points or another reward. Achievements give users clear targets beyond the core task.

Adaptive UI

Adaptive UI is an interface that changes its layout, content or features based on who the user is and how they behave. Menus, shortcuts, tips or modules can appear, move or hide for different users. The goal is to show each person what is most useful to them and reduce clutter.

Aha moment

An aha moment is the point where a new user first understands why a product is valuable to them. It is a realization rather than a metric: the user suddenly sees how the app solves their problem. Teams then tie it to a concrete action they can track.

Appointment dynamics

Appointment dynamics is a game mechanic where users must return at a set time or place to get a benefit. Daily rewards, weekly challenges and live events all use it. The value is tied to showing up on schedule, which builds a routine of regular visits.

Autonomous engagement

Autonomous engagement is an industry term for engagement systems that decide, launch and adjust campaigns with little human input. They go beyond rule-based gamification engines, where a team sets every trigger and reward by hand. The system picks targets, mechanics and timing itself and learns from the results.

Avatar

An avatar is a visual representation of a user inside an app or game. It can be an uploaded photo, an illustrated character or a customizable figure. Avatars give users an identity others can recognize and a personal object they can shape, dress or upgrade over time.

Average revenue per user (ARPU)

Average revenue per user (ARPU) is the total revenue an app or business earns in a period divided by the number of users in that period. It shows how much value the typical user generates and is used to compare pricing, monetization and growth across time and segments.

Avoidance

Avoidance is the motivation to act in order to prevent something negative from happening, such as losing progress, status or an opportunity. In Yu-kai Chou's Octalysis framework it is the core drive called Loss and Avoidance. It is a design drive, not a bias.

Badges

A badge is a visual icon an app awards when a user completes a specific action or reaches a goal. Badges act as a visible record of progress, showing what a user has done and hinting at what they could do next. They usually appear on a profile or in a collection screen.

Bartle player types

Bartle player types are four styles of play that describe what motivates people in games: Achievers, Explorers, Socializers and Killers. Richard Bartle proposed the model in 1996 based on players of multi-user online games. It is widely used to design features for different motivations.

Beginner's luck

Beginner's luck is a game mechanic that gives new users an easy early win or a better than usual reward. The first spin, quiz or challenge is set up to succeed. It shows new users that rewards are real and reachable, which encourages them to keep going.

Booster

A booster is a temporary bonus that multiplies what a user earns, such as double points or extra experience for a set time. Boosters can be earned, bought or tied to a membership. Time-limited boost periods for everyone, often called hot zones, push activity into a specific window.

Challenges

A challenge is a defined goal that asks users to complete a specific action or reach a target, often within a time limit, in return for a reward. Examples include five workouts this week or three lessons by Sunday. Challenges give users a clear, short-term reason to act now.

Choice architecture

Choice architecture is the way options are presented to people, which shapes the decisions they make. The term comes from Richard Thaler and Cass Sunstein's book Nudge. It covers defaults, the order of options, how many choices are shown and how they are framed, without removing any option.

Churn

Churn is when users or customers stop using a product or cancel their subscription. It is usually measured as churn rate: the share of users lost during a set period. High churn means a product loses users faster than it keeps them, which limits growth and revenue.

Churn prediction

Churn prediction is the practice of estimating which users are likely to stop using a product before they actually leave. It uses behavioral signals such as falling activity, missed routines or unused features, often scored by a statistical or machine learning model. Teams use the result to step in while users can still be won back.

Code redemption

Code redemption is when a user enters a code or scans a QR code in an app to claim a reward. Codes are printed on products, posters or event handouts, or shared by partners. It connects offline moments to the app and makes the effect of a campaign easy to track.

Cognitive load

Cognitive load is the amount of mental effort a person needs to process information and complete a task. The concept comes from John Sweller's cognitive load theory. In product design, high cognitive load means users must think, remember or decide too much, which slows them down and causes drop-off.

Collection sets

Collection sets are groups of related items, badges or cards that users collect to complete a full set. Each item has some value alone, but finishing the set gives a bonus or status. Seeing which pieces are still missing gives users a clear reason to keep going.

Constraint

Constraint is the motivation people feel to want something more because it is limited, delayed or hard to get. In Yu-kai Chou's Octalysis framework it is the core drive called Scarcity and Impatience. Limits on access, quantity or time make a reward feel more valuable.

Contextual engagement

Contextual engagement is reaching users with a message, reward or prompt that fits their current situation. That can be the time, place, recent action or progress. It reacts to what the user is doing now instead of following a fixed calendar. The aim is to be relevant at the moment it matters.

Core loop

A core loop is the main cycle of actions a user repeats in a product: take an action, get a result or reward, then use that result to take the next action. It is the smallest repeatable unit of engagement. Every other feature should feed it or build on it.

Countdown timer

A countdown timer is a visible clock that shows how much time is left to complete an action or claim a reward. It is used for limited offers, challenges and live events. The shrinking time creates urgency and helps users act now instead of putting it off.

Customer acquisition cost (CAC)

Customer acquisition cost (CAC) is the average amount a company spends to win one new customer. It is calculated by dividing total sales and marketing costs for a period by the number of new customers won in that period. Teams compare it with customer lifetime value to judge whether growth is profitable.

Customer lifetime value (CLV)

Customer lifetime value (CLV) is the total revenue or profit a business expects to earn from one customer over the full length of their relationship. It combines how much a customer spends with how long they stay, and helps decide how much to invest in acquiring and keeping customers.

DAU/MAU ratio

The DAU/MAU ratio divides daily active users by monthly active users to show how often people return to a product. It is often called stickiness. A ratio of 50% means the average monthly user is active on about half the days in a month.

Day-1 retention

Day-1 retention is the share of new users who return to an app on the day after their first session. It is the earliest retention checkpoint and mostly reflects the first-session experience: how quickly users understand the app and reach a first moment of value.

Day-30 retention

Day-30 retention is the share of new users who return to an app thirty days after their first session. It indicates whether the app has become part of a user's routine, and it is a closer signal of long-term value than Day-1 or Day-7 retention.

Day-7 retention

Day-7 retention is the share of new users who return to an app seven days after their first session. It shows whether users found a reason to come back several times in their first week, which is when early habits either start to form or fade away.

Dynamic feedback

Dynamic feedback is a mechanic where an app responds right away to each user action with a visible or audible signal. Points appear, bars fill, sounds play or messages change. It tells users their action counted and shows how close they are to the next goal.

Dynamic segmentation

Dynamic segmentation is grouping users by rules that are re-evaluated as their data changes, so membership updates on its own. A user joins a segment when they meet its conditions and leaves when they no longer do. It contrasts with static segments, which are fixed lists captured at one point in time.

Easter eggs

Easter eggs are hidden features, messages or rewards that users find by exploring an app or doing something unusual. They are not announced or explained. Finding one feels like a personal discovery, which rewards curiosity and gives users something to share with others.

Empowerment

Empowerment is the motivation people feel when they can make choices, try strategies and see the results of their decisions. In Yu-kai Chou's Octalysis framework it is the core drive called Empowerment of Creativity and Feedback. It keeps an experience engaging because users shape it themselves.

Endowed progress effect

The endowed progress effect is the finding that people are more likely to finish a goal when they feel they have already made progress. Researchers Joseph Nunes and Xavier Dreze described it in 2006, using car-wash loyalty cards that came with some stamps already filled in.

Epic meaning and calling

Epic meaning and calling is the motivation people feel when they believe they are part of something bigger than themselves. It is the first core drive in Yu-kai Chou's Octalysis framework. Users act because they feel chosen for a mission or contribute to a shared cause.

Event-based trigger

An event-based trigger is a rule that starts an action automatically when a specific user event happens in an app. Events can be actions like completing a lesson, making a payment or finishing a ride. The triggered action might award points, update progress, unlock a reward or send a message.

Experience points (XP)

Experience points, or XP, are points users earn for completing actions in an app, such as a lesson or a workout. XP usually cannot be spent. Instead it accumulates over time and moves users up through levels, showing how much they have done.

Extrinsic motivation

Extrinsic motivation is the drive to do something to earn an outside reward or avoid a penalty, such as points, money, prizes or status. A user who logs a workout to win a discount is extrinsically motivated. Apps often use it to get users to try a behavior for the first time.

Fan engagement

Fan engagement is the set of ways a sports club, league or media brand keeps supporters interacting with it during and between events. It covers content, quizzes, polls, predictions, rewards and community features. The aim is to turn occasional followers into loyal fans who return, share and spend.

Feature discovery

Feature discovery is the process by which users find and start using features of a product beyond the first one they tried. Many users only ever use a small part of an app. Feature discovery tactics guide them to other valuable features at the moment those features become relevant.

Flow state

Flow state is a mental state of full focus in which a person is absorbed in an activity and loses track of time. Psychologist Mihaly Csikszentmihalyi described it. Flow happens when a task's challenge matches the person's skill, with clear goals and immediate feedback.

Freemium conversion

Freemium conversion is the share of free users who upgrade to a paid plan, such as a premium subscription. It is usually measured as a free-to-paid conversion rate over a set period. In subscription apps it links engagement to revenue, because users who build a habit on the free tier are the most likely to pay.

Friending

Friending is a social mechanic where users connect with other users inside an app, usually by sending and accepting requests or by following. Once connected, they can see each other's activity, compare progress and interact. It turns a solo product into a shared one.

Gacha mechanics

Gacha mechanics are a reward system where users spend currency or tickets to draw a random item from a defined pool. Items have different rarities and drop rates, and collecting full sets often takes many draws. The name comes from Japanese gachapon capsule toy machines.

Game dynamics

Game dynamics are the behaviors and motivations that emerge when people interact with game mechanics, such as competition, collaboration, progression and curiosity. Mechanics are the rules and features, like points and leaderboards. Dynamics are the experience and drives those features create in the user.

Gamification

Gamification is the use of game design elements, such as points, levels, streaks, badges and leaderboards, in non-game products. The goal is to make everyday actions feel more rewarding and visible. That helps people start, repeat and finish the behaviors that create value.

Gamification API

A gamification API is a programming interface for adding game mechanics, such as points, levels, challenges and rewards, to a product. The app sends user events and requests data through the API. The provider stores progress, applies rules and returns results to show in the interface.

Gamification engine

A gamification engine is software that runs game mechanics, such as points, levels, streaks, challenges, leaderboards and rewards, on behalf of another product. It receives user events, applies the rules a team has configured, tracks progress and hands out rewards. The product does not need to build that logic itself.

Gamified loyalty program

A gamified loyalty program is a rewards scheme that adds game mechanics, such as challenges, levels and streaks, to the usual earn-and-redeem model. Instead of only collecting points for purchases, members earn rewards for a range of actions and see clear progress toward their next goal.

Gifting

Gifting is a social mechanic that lets users send rewards, items or currency to other users. The sender gives up something they own to help or thank someone else. It builds relationships between users and can bring new or lapsed people back into the app.

Goal gradient effect

The goal gradient effect is the tendency for people to put in more effort as they get closer to a goal. Psychologist Clark Hull first described it in 1932, based on studies of rats running toward food. In products, it explains why users speed up when a goal is nearly complete.

Group quests

Group quests are multi-step missions that a group of users completes together, with each member contributing actions toward a shared goal. The group succeeds or fails as one. They combine the structure of a quest with cooperation, so progress depends on everyone taking part.

Habit loop

A habit loop is the repeating cycle behind a habit: a cue triggers a routine, and the routine delivers a reward. The model was popularised by Charles Duhigg in The Power of Habit. Over time, repeating the loop makes the behavior more automatic and less dependent on conscious effort.

Hook model

The Hook model is a framework by Nir Eyal that describes how products build habits through four repeating steps: trigger, action, variable reward and investment. Each pass through the loop makes the next one more likely, until users return out of habit rather than reminders.

Hyper-personalization

Hyper-personalization is tailoring content, offers and experiences to an individual user using real-time behavior and context, not just broad traits like age or location. It goes beyond inserting a first name into a message. Each user can see different goals, rewards, timing or content based on what they do.

In-app messages

In-app messages are notifications shown inside an app while the user is actively using it, such as banners, pop-ups, cards or tooltips. They reach users in context, at the moment they act. Unlike push notifications, they need no device permission but only reach users who already opened the app.

Intrinsic motivation

Intrinsic motivation is the drive to do something because it is enjoyable, interesting or meaningful in itself, not for an outside reward. A user who learns a language because they love it is intrinsically motivated. In apps, it is the reason people keep coming back after the novelty fades.

Leaderboard

A leaderboard is a ranked list that shows how users compare on a specific metric, such as points earned, distance covered or lessons completed. It can cover all users, a smaller group, or a set time period. Leaderboards add social comparison and competition to actions that would otherwise feel private.

Leagues

Leagues are competitive groups that place users with a limited number of similar players for a fixed period, usually a week. At the end of each period, top players move up to a higher league and bottom players move down. This keeps competition close and winnable for most users.

Levels

Levels are stages of progress that users reach by collecting enough experience points or completing set actions. Each level has a threshold, and passing it moves the user to the next stage. Levels turn long-term usage into clear steps and often come with a new title, reward or unlocked feature.

Loss aversion

Loss aversion is the tendency for people to feel the pain of losing something more strongly than the pleasure of gaining something of equal value. Described by Daniel Kahneman and Amos Tversky, it explains why people work harder to keep what they have than to earn something new.

Loyalty tiers

Loyalty tiers are ranked levels in a loyalty program, such as Bronze, Silver and Gold, that members reach by meeting activity or spending thresholds. Each tier offers better benefits than the one below. Tiers give members a long-term goal and a status they want to keep.

Meaningful active users

Meaningful active users are users who complete a core value action in a set period, such as finishing a lesson or making a payment. Unlike standard daily or monthly active user counts, simple app opens and logins do not count. The metric shows how many people actually get value.

Milestones

Milestones are predefined goals that mark meaningful points in a user's progress, such as a first purchase, ten completed lessons or a 30-day streak. Reaching a milestone usually triggers a reward or celebration, giving users a clear target and a moment of recognition along a longer journey.

Mini quests

Mini quests are short, simple tasks that users can finish in one session, often in a few minutes. They give a quick win and a small reward. Apps use them to break a large goal into easy steps or to give users a light reason to come back each day.

MVP voting

MVP voting lets fans or users vote for the most valuable player of a match, event or competition. It is often called Man of the Match or Player of the Match. Voting gives the audience a voice, keeps them engaged during and after the event, and creates a shared result to talk about.

Mystery box

A mystery box is a reward whose contents stay hidden until the user opens it. The box can contain one of several possible prizes, such as points, discounts or digital items. It uses uncertainty and curiosity to make claiming a reward more engaging than receiving a known item.

Next best action (NBA)

Next best action (NBA) is a decisioning approach that picks the single most useful action to take with a user at a given moment. It weighs options such as a message, offer, reminder or content item against the user's context and the business goal. The choice can come from rules, models or both.

No-code gamification

No-code gamification is adding game mechanics such as points, challenges, leaderboards and rewards to a product through a visual console instead of writing code for each change. Developers connect the app once, then marketers and product teams create, edit and launch mechanics themselves.

Nudge

A nudge is a small prompt or design choice that makes a helpful action easier, without removing options or adding strong incentives. The idea was popularized by Richard Thaler and Cass Sunstein in their 2008 book Nudge. In apps, nudges include reminders, smart defaults and progress cues.

Octalysis framework

The Octalysis framework is a gamification design model created by Yu-kai Chou. It groups human motivation into eight core drives, such as accomplishment, ownership, social influence and loss avoidance. Designers use it to analyze which motivations a product activates and which ones it neglects.

Ownership and possession

Ownership and possession is a core drive in Yu-kai Chou's Octalysis framework. It describes the motivation people feel when they own, build or improve something. Users care more about points, items, profiles or collections they see as theirs, and they come back to protect and grow them.

Personality quiz

A personality quiz is a set of questions with no right or wrong answers that sorts the user into a result type, such as "Which runner are you?". Each answer adds weight to one or more outcomes. People share the result because it says something about them, which makes these quizzes highly social.

Points

Points are a numeric score that users earn for completing actions in an app. They are the most basic game element and show progress, effort or status at a glance. Points can be cumulative, like experience points, or spendable, like a virtual currency used to claim rewards.

Poll

A poll is a single question that asks users to pick an option or share an opinion, with no right or wrong answer. Results are usually shown to participants after they vote. Polls invite low-effort participation and give product and content teams quick input from their audience.

Prediction game

A prediction game asks users to forecast the outcome of a future event, such as a match score, before it happens. Correct predictions earn points. Results are revealed after the event, which gives users a reason to come back and check how they did.

Predictive analytics

Predictive analytics is the use of historical data, statistics and machine learning to estimate future outcomes. In apps it answers questions such as who will churn, who will convert and how much a user will spend. It shifts teams from reporting what happened to preparing for what is likely to happen next.

Premium membership

A premium membership is a paid subscription that gives users extra benefits in an app. Typical perks include discounts, early or exclusive access, bonus rewards and visual status markers. It turns engaged users into recurring revenue, as long as free users still get real value.

Progress bar

A progress bar is a visual indicator that shows how far a user has come toward completing a task or goal. In apps it often tracks onboarding steps, profile completion, lessons or challenge targets. It makes the remaining effort visible and gives users a clear sense of what is left.

Progress board

A progress board is a visual overview that shows a user's advancement across several goals, steps or areas at once. It can take the form of a map, a grid of tiles or a checklist with milestones. It shows the whole journey, not just a single percentage.

Progress loss

Progress loss is a game mechanic where users lose earned progress, status or rewards if they stop taking part. Examples include a streak resetting to zero, points expiring or dropping to a lower tier. The threat of losing what they built motivates users to stay active.

Propensity modeling

Propensity modeling is a statistical method that estimates how likely a user is to take a specific action, such as buying, upgrading or leaving. Each user gets a score based on past behavior and traits. Teams use these scores to decide who to target, with what, and when.

Push notification

A push notification is a short message an app sends to a user's phone or desktop, even when the app is closed. It can remind, inform or invite the user back. Well-timed notifications act as nudges: small prompts that make a helpful next step easier without forcing it.

Quests

A quest is a series of linked steps that users complete in order to reach a reward. Each step points to the next action, so the quest works as a guided path through an app. Quests are often used for onboarding, feature discovery or longer goals that keep users progressing.

Quiz

A quiz is a short set of questions with right or wrong answers that users complete inside an app. Quizzes test knowledge, teach through instant feedback and turn passive content into an active task. In apps they are often scored and rewarded with points, badges or entries into a prize draw.

Raffle

A raffle is a prize draw in which users enter with tickets, points or qualifying actions, and one or more winners are picked at random. In apps, raffles let a large group of users compete for a few valuable prizes, adding chance and excitement to everyday engagement.

Reactivation

Reactivation is the process of bringing inactive or lapsed users back to an app and getting them to use it again. It targets people who signed up but stopped returning. Typical tactics include reminders, comeback incentives, new content and limited-time challenges aimed at that group.

Referral program

A referral program rewards existing users for inviting new users to a product. The referrer, and often the new user too, receives a reward once the invite leads to a sign-up or a first key action. It turns satisfied users into an acquisition channel driven by word of mouth.

Reward store

A reward store is an in-app catalog where users spend points or virtual currency they have earned on items, perks or discounts. It gives earned currency a clear purpose and lets users choose the reward that matters most to them, rather than receiving a fixed prize.

Scarcity

Scarcity is the tendency to value something more when it is limited in number or time. Robert Cialdini named it one of the six principles of persuasion in his book Influence. In apps, scarcity shows up as limited stock, limited-time offers and rewards only the first users can claim.

Scratch card

A scratch card in an app is a digital reward that users reveal by swiping or tapping to "scratch" away a cover. It hides a prize such as cashback, points, a coupon or nothing at all. It borrows the anticipation of physical lottery scratch cards to make earning a reward feel more exciting.

Seasonal campaign

A seasonal campaign is a time-limited engagement campaign tied to a holiday, season or event, such as Halloween, the summer break or a sports final. It gives users a themed goal, reward or collectible that is only available for a set period, which creates a fresh reason to return and a sense of urgency.

Self-determination theory

Self-determination theory is a theory of human motivation developed by psychologists Edward Deci and Richard Ryan. It states that people are most motivated when three needs are met: autonomy, competence and relatedness. It also explains the difference between intrinsic and extrinsic motivation.

Session length

Session length is the amount of time a user spends in an app during a single visit, from opening it to leaving or going idle. It is usually reported as an average or median across sessions. Together with session frequency, it shows how deeply and how often people use a product.

Social feed

A social feed is a stream of posts inside an app where users and the brand share updates, photos, achievements and comments. It shows what others are doing, which adds social proof and a sense of community. A good feed gives users a reason to return even when they have nothing to do themselves.

Social influence and relatedness

Social influence and relatedness is a core drive in Yu-kai Chou's Octalysis framework. It covers everything that motivates people through other people: belonging, competition, cooperation, approval and comparison. Users act because of what friends, peers or a group are doing, saying or expecting.

Stat tracking

Stat tracking is recording and counting specific user actions or values over time, such as workouts completed, distance traveled or payments made. Stats are often kept per user and per time window, like daily, weekly or all-time. They form the data behind goals, leaderboards and progress displays.

Stat trigger

A stat trigger is a rule that hands out a reward automatically when a tracked user statistic changes by a set amount. For example, every extra workout logged adds coins to the user's wallet. It turns a metric the app already counts into instant feedback, without manual work.

Streak

A streak is a count of consecutive days or weeks in which a user completes a specific action, like a lesson or a workout. The count grows with each repetition and resets when the user misses one, which gives people a visible reason to keep a routine going.

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