rodbishop on Nostr: 30 day retention per cohort. So, e.g. as at 1st April For users who signed up on 8th ...

30 day retention per cohort.

So, e.g. as at 1st April
For users who signed up on 8th March
How many were still on Nostr 30 days later?

8th March + 30 days is 8th April
No users were using Nostr on 8th April, as it is not 8th April yet, it is only 1st April

Therefore 30 day retention of that cohort is 0.

In a few days check back.