In short
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.
Why it matters for apps
Day-30 retention shows whether users stayed past the novelty phase. It is closely tied to revenue, because users who remain after a month are the ones who subscribe, buy and refer others.
- Routine signal: Users still active after a month are more likely to have formed a habit.
- Long-term goals: Levels, monthly challenges and progress that builds over weeks give users a reason to stay.
- Read it by cohort: Compare Day-30 across signup cohorts to see whether product changes help.
- Common mistake: Relying on rewards alone. Users need ongoing value from the core product, not only prizes.
Look at it next to Day-1 and Day-7 to see where most users drop off.
Industry examples
Apple Fitness monthly challenges give users a goal that spans their whole first month.
A language app tracks Day-30 retention per signup cohort to test whether a new reminder helps learners stick (hypothetical).
Build it with StriveCloud
StriveCloud does not report retention curves, but it gives you levers for the first month. Use levels for long-term progress, plus monthly time challenges and tiers that reset each month. Users then have a reason to stay active all month, not just in week one.
Want to try this? Explore app engagement software
Frequently asked questions
How do you calculate Day-30 retention?
Take the users who first opened the app on a given day, then divide the number who returned on day thirty by the size of that group.
Why does Day-30 retention matter?
Users who still return after a month are more likely to have formed a habit. It is a better signal of long-term value than early numbers.
What is the difference between Day-30 retention and churn?
Day-30 retention measures how many new users are still active after a month. Churn measures how many existing users stop using or paying over a period.