Minimal
What is left when another app owns the island. One glyph, still yours.
Version 3.4.0 — now with Live Activities
Your day,
one cell at a time.
Habits, tasks, focus, water and fasting in a single honeycomb. Everything stays on your phone — no account, no cloud, no analytics, no ads.
Download on the App Store
Pro free for 30 days
- Works offline
- Every screen, always
- Data leaves your phone
- Never
- Fasting claims
- Cited, and hedged
1.5 L
Hydration
1450 ml of 2100 ml · 69%
Dynamic Island
Your water and your fast live at the top of the screen.
Glance to check. Tap once to log a drink. The island cycles through all three presentations below, the same way iOS does as you move between apps.
1.5 L
Compact
The ring and the figure, split around the camera. Each side is sized to its content, so the pill does not lean.
Expanded
Long-press, and the button is there. Tap +250 ml and the total moves under your finger.
The Dynamic Island needs iPhone 14 Pro or later. On every other iPhone running iOS 16.2 or later the same activity appears on the Lock Screen.
Wednesday 4 November
—:—
Habit-Check
16:8
82%
02:48:00
left of a 16-hour fast
Metabolic switch
13h 12m in
Lock Screen
The fast keeps counting
with the app closed.
The countdown is driven by the system, not by the app, so it stays honest whether you are in another app, on the Lock Screen, or have not opened Habit-Check since breakfast.
- System-driven countdownThe timer is handed to iOS as an interval, so it never drifts and never needs the app awake.
- Tap through to the screenThe activity opens Hydration or Fasting directly, not the last screen you happened to leave open.
- Off by defaultTurn it on, and preview all three presentations, under Settings › Dynamic Island.
Hydration
A tank you actually
want to fill.
The vessel is a hexagon because the honeycomb is the app's one shape, and this is the screen you open most. Two offset sine waves drift at different speeds, so the surface never repeats in a way your eye can catch.
Every drink lands in your log with the time you actually tapped — including the ones logged from the island without opening the app.
1450 ml
of a 2100 ml goal · 69%
Fasting
Six metabolic phases, each one cited — and hedged where the evidence is thin.
02:48:00
remaining
Metabolic switch
Primary sources, in the app, on every phase — Cahill 2006, Klein 1993, Owen et al. Where a popular claim outruns the human evidence, the app says so rather than repeating it. The “autophagy starts at hour 16” figure is one of those.
Habits, tasks, focus
A year of a habit, on one screen.
Each cell is a day. Tap to fill it. The grid is the whole interface — no streak-shaming, no notifications you did not ask for.
There is no server to breach, because there is no server.
No account. No cloud. No analytics. No ads. Your habits, your fasts and your water log never leave the device they were entered on.
- No account
- No cloud sync
- No analytics
- No ads
- No tracking SDKs