StackbitePrivacy Policy
Stackbite does not sell your data, does not show ads and does not track you across other apps or websites. This policy explains what the Stackbite app ("the app") collects, why, and how you control it. The app is operated by Mert Demircan Yuce ("we", "us"), based in California, USA.
What we collect
| Data | When | Why |
|---|---|---|
| Food diary: foods and meals you log, portions, recipes and foods you create, calorie and macro goals, step goal and steps | When you use the app | To show your day, totals and history |
| Personal details: name, birth date or year, height, weight, the sex used in the calorie formula, activity level, weight aim | When you enter them, for example in the first-launch intro | To work out a daily calorie goal |
| Steps and active energy from Apple Health | Only if you connect Apple Health | To show your steps next to what you ate |
| Account: email address, an encrypted (hashed) password, display name | When you create an account, or sign in with Apple or Google | To sign you in and keep your diary on all your devices |
| Usage counts: which built-in foods are added, what is searched for, which screens open, steps of the intro, app version, device model, operating system and language | While you use the app, unless you turn it off | To learn what works and what to improve |
| Friends: the name and emoji friends see, your friend code, the friends you add, cheers and pokes you send, and for each day only what you switch on under What friends see (whether you logged and your streak, steps, how full your day is, calories, meal names) | Only if you use Friends while signed in | To show the friends you add what you chose to share, your buddy streaks and the weekly table |
| Barcode numbers | When you scan a product | To look up the product's label |
| Feedback: the title and message you write, your email (your account's, or one you type), the app version and whether it is an iPhone or Android phone | When you send feedback from Settings | To answer you and fix what you report |
Without an account, your diary stays on your phone and is not sent to us. Usage counts never include your email, the names of foods you create, how much you ate, or anything read from Apple Health. The camera is used only to read barcodes; no photos are taken or sent.
Friends
Friends is optional and needs an account. Friends can be added only with your code or invite link; nobody can search for you. They see only what you switch on under What friends see (Settings, then Friends); everything else, and always your weight and goals, stays private. Removing a friend stops sharing with them at once, and deleting your account deletes everything Friends stored.
Apple Health
If you connect Apple Health, the app reads your steps and active energy, and nothing else. It never writes to Apple Health. The steps are saved with that day in your diary, and in your account if you have one, so they show on your other devices. Apple Health data is never used for advertising or marketing, never sold, never shared with third parties for those purposes, and never sent to our usage counts. You can turn it off in the app's Settings, or remove access in iPhone Settings › Health › Data Access & Devices › Stackbite. If you switch on Steps under What friends see, your daily step count, which may come from Apple Health, is shown to the friends you add and to no one else.
Who processes it for us
- Supabase (USA) hosts accounts and saved diaries.
- PostHog (USA) receives usage counts. Session recording is off, and IP addresses are not stored.
- Apple and Google sign you in if you choose those buttons. Apple may give us a private relay email instead of your real one.
- Open Food Facts receives a barcode number when you scan one, with no account details.
- Apple App Store handles payments when subscriptions are offered; we never see your card.
These providers process data only to run the app for us. Beyond them, the friends you add see only what you choose to show them; otherwise we share data only if the law requires it or to protect someone's safety.
How long we keep it
Your diary and account stay until you delete them. Usage counts are kept for up to 24 months, then deleted.
Your choices and rights
- See and correct: everything you entered is visible and editable in the app.
- Delete your account: Settings, then Account, then Delete account. This deletes your account and everything saved to it at once, feedback you sent while signed in included; the diary on your phone stays until you remove the app.
- Turn off usage counts: Settings, then Preferences, then Share usage counts.
- Get a copy or ask a question: email stackbiteapp@gmail.com. We answer within 30 days.
These rights apply wherever you live, including under California law. We do not sell or share personal information for cross-context behavioral advertising.
Health data
Calorie, weight and diet details can count as health data under some state laws, such as Washington's My Health My Data Act. We use it only to provide the app's features you ask for, never for advertising, and never sell it. Washington and Nevada residents can also read our separate Consumer Health Data Privacy Policy.
Children
Stackbite is not for children under 13, and we do not knowingly collect their data. If you think a child has given us data, email us and we will delete it.
Security
Data is encrypted in transit. Each account can only read its own diary, enforced in the database itself. Sign-in tokens are kept in your phone's secure storage. No system is perfectly secure, so please use a strong password.
Changes and contact
We will post changes here with a new effective date, and tell you in the app if they are significant. Questions: stackbiteapp@gmail.com.