Privacy policy

This policy explains what data the Selfspan app handles, where it is kept and what you can do with it. In short: your data stays on your phone. There are no accounts, no servers of ours with your data and no advertising or tracking.

1. Who is responsible

The app is provided by Nelson Oliveira. For any privacy question: n2kay.base@gmail.com.

2. What data the app stores

Only what you log or allow it to import:

• Profile: date of birth, sex, height, weight, activity type, training habits and goal.
• Health records: fasts, weight and body measurements, workouts, steps, water, sleep, vitals (blood pressure, heart rate, heart rate variability, blood oxygen, temperature, respiratory rate, blood glucose) and nutrition.
• Medication and supplements: names, doses, times, the doses you mark, stock, prescription expiry and dose changes. They stay on the phone only, like everything else.
• Lab tests and exams: what you track, the dates, the test values you enter and the photos or PDFs of the reports. They stay on the phone only; photos and PDFs aren't included in backups.
• App preferences (active modules, goals, reminders and, if you choose it, the city for the heat-adjusted water goal).

3. Where the data is kept

In a database inside the app, on your phone. It isn't sent to servers of the app's provider or of third parties, except in the cases described in section 5, always by your action or with your permission.

4. Health Connect and Apple Health

If you connect the app to Health Connect (Android) or Apple Health (iPhone), the app can:

• Read the data types you allow (for example: steps, sleep, workouts, weight, body fat, heart rate, heart rate variability, blood oxygen, blood pressure, temperature, respiratory rate, blood glucose, water and nutrition), to show them in the matching modules and calculate goals and statistics.
• Write there the records you make in the app, only if you turn on the "Send my records" option and only for the types you allow.

Data obtained from Health Connect is used only for the app features you are using. It isn't sold, isn't used for advertising, isn't shared with third parties and isn't transferred off your phone. The use of Health Connect data complies with the Health Connect usage policy, including the Limited Use requirements. You can withdraw permissions at any time in the Health Connect settings or in the app itself ("Disconnect").

5. When data leaves the phone

• Food search and barcode scanning: the searched text or the barcode is sent to Open Food Facts (openfoodfacts.org) to get the nutrition information. No personal or health data is sent.
• Heat-adjusted water goal (optional, off by default): the name of the city you search for and the approximate coordinates of the chosen city are sent to Open-Meteo (open-meteo.com) to get the day's temperature. The phone's location isn't used and no health data is sent.
• Exercise images: the photos showing how to do each exercise are downloaded from GitHub (raw.githubusercontent.com, free-exercise-db project) when you open the list or the details of an exercise. GitHub sees the phone's IP address, as with any web page, but receives none of your workout or health data. If you save a video link for an exercise, it's only opened when you tap it, in the app or in the browser you choose.
• Progress photos (optional): they're only taken or chosen when you ask, are stored in an app folder on this phone and aren't sent anywhere or included in backups. Deleting the photo in the app deletes the file.
• Backups: if you choose a folder, the app saves copies of your data there. If that folder is synced with a cloud service (for example, Google Drive), that service then has a copy, under its own rules.
• Export and share: when you export a backup and share it (email, Drive, etc.), you choose where it goes.
• System backup: Android or iOS may include the app's data in your Google or Apple account backup, if you have it turned on.

6. What the app doesn't do

• It doesn't ask for an account or email.
• It doesn't use advertising or tracking or usage analytics tools.
• It doesn't sell or share data.
• It doesn't use your data to train artificial intelligence models.

7. Notifications

Reminders (fasting, water, sleep, quote of the day, weekly summary) are scheduled on the phone itself. They don't go through servers.

8. Your rights and how to delete your data

Since your data is only on your phone, you have full control: you can view, correct and export everything in the app, and delete everything in Settings → Delete all data. Uninstalling the app also deletes the data (except backups you've saved in a folder of your choice). What the app sent to Health Connect can be deleted when you disconnect or in the Health Connect settings. For any request related to the GDPR or other data protection laws, contact us at the email above.

9. Minors

The app is intended for people aged 18 or over.

10. Changes

If this policy changes, the new version is published on this page and the app asks you to accept it again. Last updated: October 23, 2026.