How to use this tool
Choose a starting cohort and the exact return window. Day-one retention counts members of that cohort who return on day one; it does not count unrelated new players arriving that day.
How the calculation works
Retention rate = returning players ÷ starting cohort × 100
Example
If 320 of 1,000 new players return on day 1, day-1 retention is 32%.
Read the result without overestimating it
Keep exact-day retention separate from rolling or range retention. A player returning only on day three may count in one definition and not another, so label the method alongside the percentage.
Why this result matters
Retention shows whether a specific install cohort returns. Day 1, day 7, and day 30 answer different questions and should never be mixed.
Tips for a more useful estimate
- Define the cohort date and return day clearly.
- Exclude internal testers.
- Compare similar traffic sources and countries.
Frequently asked questions
What counts as returning?
A player active during the selected return window according to your analytics definition.
Is higher always better?
Usually, but the right target depends on genre, audience, and session pattern.
Try Koala Kam’s Triple Match
A colorful space-themed triple-match adventure starring Kam.
Explore Koala Kam’s Triple MatchPrepared by Dorn Bros Entertainment · Updated October 27, 2026 · Report a calculation issue
This free tool provides an estimate for general informational purposes. It is not financial, tax, legal, or professional advice.