Stamp'd Privacy Policy
The short version
Stamp'd — Diet & Gym Tracker keeps what you log on your iPhone. There is no account, no server of ours, no advertising, no analytics and no tracking, and we never sell or share your data.
The app only talks to the internet when you look up a food (the barcode or the words you search go to Open Food Facts) and to show exercise pictures. Everything else — your diary, workouts, weigh-ins, photos and Apple Health data — stays on your devices unless you choose to share or export it.
What the app keeps, and where
Everything you enter is stored in the app's own storage on your iPhone, which only Stamp'd can read:
- Your log: foods and meals, the food diary, water, workouts and routines, weigh-ins and body measurements, fasts, goals, your profile (such as height, birthday and sex, if you enter them) and settings.
- Photos you add: progress photos, and the last 20 nutrition-label scans (kept to improve label reading on your device; never sent anywhere).
- Shared with the widget and Siri: a small summary of today (calories, macros, water, your routines and any running fast) is kept in an area the app shares with its home-screen widget and Siri actions, so they can show it.
We have no copy of any of this. If your iPhone is backed up to iCloud or a computer, Apple's device backup includes the app's data, except the copy of your Apple Health data, which is left out of backups.
Apple Health
Apple Health is optional and you choose each kind of data in Apple's own permission screen. Data from Apple Health is used only inside the app and never leaves your device through Stamp'd; it is never used for advertising or shared with anyone.
| Direction | What |
|---|---|
| Read from Apple Health | Weight, body fat, active and resting energy, steps, workouts (with their energy and distance, and the app that recorded them), height, birthday and biological sex |
| Saved to Apple Health | The food you log (energy, macronutrients, vitamins, minerals and caffeine, with the food's name), water, weigh-ins, body fat, waist, and workouts |
You can turn any of this off at any time in the Health app or in iPhone Settings › Health › Data Access & Devices.
Camera and photos
The camera is used only when you choose to scan a barcode, photograph a nutrition label, photograph a meal for an AI estimate, or take a progress photo. You can also pick these photos from your library; the app sees only the photos you pick.
Barcodes and nutrition labels are read on your iPhone (with Apple's on-device text recognition and Apple's on-device model). Progress photos stay in the app. The app never records audio.
Estimate with AI
Estimate with AI is optional and only runs when you tap it. It sends your meal photos and the description you type — nothing else, no profile, health data or identifiers — in one of two ways you choose:
- Estimate (Apple Intelligence): the app hands the photos and description to the "AHT Meal Estimate" shortcut in Apple's Shortcuts app, which asks Apple Intelligence (Apple's Private Cloud Compute) and gives the reply back. Apple handles that request under Apple's privacy policy. If you change the shortcut to use another model, that provider's terms apply. The photos are removed from the shared area once the reply comes back.
- Copy for any AI: the photos and a prompt are copied to your clipboard for you to paste into an AI service of your choice (such as ChatGPT or Claude). The app sends nothing itself; what you paste is governed by that service's privacy policy.
What goes over the internet
The app makes only these requests, and none carries your name, an account, a device identifier or any health data:
| When | Sent to | What is sent |
|---|---|---|
| You scan a barcode | Open Food Facts | The barcode |
| You search for a food (3+ letters) | Open Food Facts | The search words, plus your country and language from your iPhone's settings, to find local products |
| An exercise picture is shown | GitHub (raw.githubusercontent.com), which hosts the free exercise image library | A request for that picture |
Like any internet request, these reveal your IP address to the service you reach. Every request names the app and its version, nothing more. Links you tap — a how-to video on YouTube, or the shortcut on iCloud — open in Safari or that app, under their own policies.
Widgets, Apple Watch, Siri and notifications
- Widgets and Live Activities show today's totals, your next routine, a running workout or fast, from the summary the app keeps on your iPhone.
- Apple Watch: the iPhone and Watch apps pass today's summary, your live workout and the sets, water and other actions you log on the Watch directly between your devices. No server is involved.
- Siri and Shortcuts actions (log water, log a weigh-in, start a workout, open food search or fasting) work on your device.
- Notifications (rest timer, fasting goal, optional reminders) are scheduled on your iPhone. The app does not use push notifications.
Sharing, exports and imports
Nothing is shared unless you tap Share or Export, and you choose where it goes in the iPhone share sheet.
- A shared routine carries its name, notes, exercises and planned sets. A shared food or meal carries its name, brand, barcode, nutrients and recipe. Neither carries your history, your profile or any identifier.
- Backups (Settings › Export backup) contain your whole log and progress photos, but not your Apple Health data. Keep them somewhere safe.
- Exports to other apps' formats (workouts, food log, body measurements) contain what their names say.
- Imports from other apps' exports, and backups you restore, are read on your iPhone.
What we don't do
- No account or sign-in, and no server that receives your data.
- No analytics, crash reporting, advertising or tracking tools, and no advertising identifier.
- No selling, renting or sharing of your data with anyone.
- No location, contacts, microphone or Bluetooth access.
Your choices and contact
- Deleting your data: deleting the app removes everything it stored on your iPhone and Watch. Data already saved to Apple Health stays there until you delete it in the Health app. Backups and exports you made stay wherever you saved them.
- Children: the app is not directed at children under 13, and we collect no personal information from anyone.
- Changes: if this policy changes, the new version will be posted here with a new date at the top.
- Contact: questions about privacy go to privacy@pranavsuby.com.