ADAPTIVE CALORIE TRACKING · DESIGNED IN SWITZERLAND
A stable budget,
guided by your weight trend.
The engine learns your observed metabolism each week after five logged days.
A goal date appears only with a reliable weight trend.
THE ADAPTIVE ENGINE
Your metabolism reveals itself over time.
A formula provides the starting point. Each week, ark.fit compares your log with your weight trend and keeps your base budget stable.
Log as usual
Search, scan or describe. Five logged days are enough for the next assessment.
Weigh yourself regularly
The 10–14-day trend softens fluctuations from water, salt and glycogen.
See the uncertainty
The budget stays stable. The range tightens with your data, while the goal date waits for a reliable trend.
If your real loss exceeds ~1.2% per week, ark.fit forces the budget up — whatever your log says. Absolute calorie floor, never "unlogged day = 0 kcal".
Fewer than 5 logged days in the week? The engine does not use that week to re-estimate metabolism. The base budget stays stable and the safeguards remain active.
INSIDE THE APP
Three screens.
All the tracking.
THE EVERYDAY
Everything you need to log fast. Nothing to distract you.
Offline search
2'608 FSVO and CIQUAL foods remain available without a connection.
Smart scanner
Barcode recognised instantly, on-device and free. If the product's missing, a multi-angle label photo takes over.
Nutrition rings
Macros, fibre, salt, saturates and free sugars. Partial data shows ≥ or a range, never a false zero.
Weight trend
A curve smoothed over two weeks: you see the trajectory, not the noise of the morning scale.
Retroactive log
Add to the right meal on a past day. A recent deletion remains undoable.
HealthKit optional
Sync weight and activity if you want. The app works 100% without it.
Sourced data without false zeroes.
FSVO and CIQUAL provide 2'608 foods offline. ark.fit shows sources, coverage and badges only when the data exists.
BEYOND COUNTING
An app that grows with your kitchen.
Describe
Describe your meal, add up to three photos, or combine both. AI suggests an editable range, never a number presented as exact. Infomaniak processes in Switzerland by default; a selected model may process outside Switzerland with your consent.
Anti-waste inventory
Your kitchen in your pocket: expiry dates, freshness alerts, and the list of what to cook first.
Recipes
Recipes computed to the gram from the FSVO database — and prioritised by what's about to expire at your place. Import any recipe from its link.
Receipt OCR
Scan your receipt. ark.fit prepares the items; you confirm them before adding them to the pantry.
Household
Everyone keeps their own budget. The household shares its pantry, recipes and proposed meals with end-to-end encryption.
RADICAL PRIVACY
Your data stays in your pocket.
Your personal log stays encrypted on the iPhone. Household data is end-to-end encrypted during sync. No advertising or data resale.
HONEST PRICING
The app is free. AI is pay-as-you-go.
No subscription. Every operation shows its credit cost before starting and estimates how long your balance may last from your usage.
FRANÇAIS · DEUTSCH · ITALIANO · ENGLISH
Commence par te peser.
Beginne mit dem Wiegen.
Comincia pesandoti.
Start by weighing yourself.
After calibration, the app tracks your metabolism. When the weight trend is reliable, it adjusts the goal date; otherwise the date remains unavailable and the base budget stays stable.
