I/O FitPrivacy Policy
Last updated September 25, 2026
I/O Fit (“I/O Fit”, “we”, “us”) is a workout and nutrition tracking app. This policy explains what information the app and this website handle, why, and the choices you have. The short version: your training data is yours, it's used only to run the app, and it's never sold or used for advertising.
Using I/O Fit as a guest
You can use I/O Fit without an account. As a guest, everything you enter is stored only on your device. Food searches, purchases and shared links still use the services described below.
Information we collect
Account information
If you create an account, we store your email address and a securely hashed password. If you sign in with Google, we receive your email address and basic profile details (such as your name) from Google.
Your fitness and nutrition data
What you record in the app: workouts, sets, exercises, programs, templates and notes; body weight and body measurements; food and water logs, saved meals and nutrition targets; and the profile details you choose to enter, such as display name, height, age, sex, activity level, goals and units.
This data is stored on your device. When you're signed in with cloud sync turned on, it's also stored in our cloud database so it's backed up and available on your other devices.
Food search
When you search for a food or scan a barcode, the search text or barcode is sent through our server to FatSecret, which provides the nutrition database. We don't send your name, email or account details to FatSecret.
Purchases
I/O Fit Pro is sold through the Apple App Store and Google Play, which handle payment. We never see your card or payment details. Purchases are verified and managed by RevenueCat, which receives your purchase history, an app user ID (your I/O Fit account ID, or a random ID if you're a guest), and basic device and app information needed to validate purchases.
Shared links
When you share an exercise, template or program, a copy of that item is stored so the link works. Anyone with the link can view it. The shared copy is tied to your account ID so only you can manage it, but it doesn't include your email, your name or the rest of your history.
What we don't collect
I/O Fit has no ads and doesn't use advertising or third-party analytics tools. It doesn't track you across other apps or websites, and it doesn't read Apple Health, Google Fit or your location. Reminders are scheduled on your device.
How we use information
- To provide the app: storing and syncing your data, showing your progress, and calculating targets and suggestions.
- To manage your account, including sign-in, password resets and account emails.
- To provide Pro features to people who purchased them, and to handle restores.
- To respond when you contact us for support.
- To keep the service secure and working properly.
We don't sell your personal information, share it for advertising, or use your health and fitness data for anything other than running the app for you.
Service providers
| Provider | What it does |
|---|---|
| Supabase | Account sign-in, cloud database and sync, and the server functions the app uses |
| FatSecret | Food and barcode nutrition data (receives search text and barcodes only) |
| RevenueCat | Validating and managing Pro purchases |
| Apple and Google | App distribution, payments and, if you choose it, Google sign-in |
| GitHub Pages | Hosting this website |
These providers process information on our behalf, under their own privacy and security commitments. Some may process data outside your country.
How long we keep information
We keep your data for as long as you keep your account or keep the data in the app. When you delete data or your account, it's removed from our active systems; copies in routine backups are deleted as those backups expire.
Your choices and rights
- Stay local: use guest mode, or turn off cloud sync in Settings.
- Export: Settings → Data & sync → Export data gives you a copy of your data.
- Delete data: Settings → Data & sync → Reset all data deletes your data from the device and, if you choose, from the cloud.
- Delete your account: Profile → Settings → Delete account removes your account and all of its data. See support for other options.
- Access or correction: most information can be viewed and edited in the app. For anything else, email us.
Depending on where you live, you may have additional rights, such as to access, correct, delete or port your personal information, or to object to certain processing. Contact us to exercise them; we won't treat you differently for doing so.
Security
Data is encrypted in transit, and cloud data is protected by access rules that let each account reach only its own records. No system is perfectly secure, so please use a strong, unique password.
Children
I/O Fit isn't directed at children under 13, and we don't knowingly collect personal information from them. If you believe a child has given us personal information, contact us and we'll delete it.
Changes to this policy
If we change this policy, we'll update the date above. For significant changes, we'll also let you know in the app.
Contact
Questions or requests: support@iofit.app