Some things have no schedule, only a last time. When you changed the water
filter. When you last called your mum. When the car was washed.

Whenzo answers one question: when did I last do this?

Make a tracker, tap it when you do the thing, and the app tells you how long
it has been — "5 days ago", "3 months ago". That is the whole idea.

CALM BY DESIGN
No streaks. No badges. No guilt. Missing something is not a failure state,
and the app will never tell you it is. There is one optional reminder a day,
batched into a single notification, and it is worded as a fact rather than a
demand.

SET A RHYTHM, OR DON'T
Give a tracker a target — every 5 days, every 3 months — and it will show how
far along it is and when it is due. Or leave the target off, and it simply
remembers when things happened. Both are first-class.

SEE THE PATTERN
Whenzo learns your actual rhythm from your own history: the typical gap
between times, how regular it is, the longest you have left it. If your real
habit and your target disagree, it says so once and offers to fix the target
— because usually the target was wrong, not you.

WORKS ENTIRELY OFFLINE
Whenzo has no internet permission at all. It cannot phone home, because it
has no ability to. No account, no sign-in, no analytics, no ads, no tracking.
Your history lives on your device.

Export everything as CSV or JSON whenever you like.

ALSO
• Groups, so a long list stays navigable
• Completion states — done, partial, skipped — when a plain tap is too blunt
• Calendar view of everything you have logged
• Home-screen widget with one-tap logging
• Optional app lock, using your fingerprint or device passcode
• Ten accent colours, light and dark themes
• Built for phones and tablets, with a two-pane layout on larger screens