Growth maths · Free
Cohort Retention Table
Paste cohort data, get a colour-coded retention grid.
Period 1 retention
45%
Period 4 retention
27%
| Cohort | Users | P1 | P2 | P3 | P4 |
|---|---|---|---|---|---|
| Jan | 1,000 | 42% | 33% | 29% | 27% |
| Feb | 1,200 | 44% | 35% | 31% | |
| Mar | 1,500 | 46% | 37% | ||
| Apr | 1,400 | 48% | |||
| Average | 45% | 35% | 30% | 27% |
How to use it
- One cohort per line: name, starting users, then users still active in period 1, 2, 3…
- Look for where the curve flattens — that's your core users.
What good looks like
- Curves that flatten (not fall to zero) mean product-market fit.
- Newer cohorts retaining better than older ones means the product is improving.
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