18 February 2026 · retention
Reading retention without vanity
A person who pays monthly and opens the app on Thursdays is not a failure of daily activity. Treating them as a dip is how teams ship guilt notifications.
Daily active users arrived from advertising and social products where the business really did need a person every day. Subscription software — a language course, a grocery list, a meditation library — often does not. The billing event is monthly. The successful task might be weekly. DAU then becomes a mood, not a measurement.
What the number hides
DAU mixes new curiosity, habitual use, and silent launches. In Cohort Craft week three we spend an hour splitting those. Once you remove ghosts, many “healthy” DAU lines look like a saw. The saw is not a crisis. It is people living in the United Kingdom with jobs.
A better steering pair for many of our alumni is: share of paid accounts that completed the contracted task inside the product’s natural window, and time-to-first-success for new trials. Neither is as pretty as a single tile. Both survive a conversation with finance.
When daily still belongs
If your product is a commute puzzle or a market that moves while London is awake, daily is honest. Put it on the steering page. If your product is a monthly close or a weekend hobby, daily belongs in the lab notebook where you may still hunt bugs.
Anxiety is not a north star. A window that matches the bill is.
For drawing those windows, sit Cohort Craft or read cohort windows that lie.