App Privacy Policy

Zero Kit Gym — Privacy Policy

Last updated: 12 October 2026

Zero Kit Gym ("the app") is a free home workout app for Android, made by Four-Eyed Gems("we", "us"). This policy explains what information the app uses and where it goes.

The short version: everything you enter stays on your phone. The app has no account, no ads, no analytics and no internet access. We never receive, see, sell or share your data.

1. Information the app stores on your phone

To build and track your plan, the app saves the following only on your device:

About you
Age, gender, height and weight.
Health answers
Whether a doctor has advised care with exercise, and (if you choose to answer) whether you are pregnant. These are used only to keep your plan low impact.
Your plan
Your goal, focus areas, equipment, workout days and length.
Your progress
Workouts done or skipped, level test scores, body weight entries and, if you use it, the optional food log.
Settings
Units, theme, sounds, reminders and app lock.

This information is stored in an encrypted database. The encryption key is kept in your phone's secure storage (Android Keystore) and never leaves your phone.

2. What we do not collect

  • No name, email, phone number or account.
  • No location, contacts, photos, camera or microphone.
  • No advertising ID, analytics, crash reporting or tracking of any kind.
  • No data is sent to us or to anyone else. Release versions of the app do not even have permission to use the internet.

3. Permissions

PermissionWhy
NotificationsOptional workout and weigh-in reminders, created on your phone. You can turn them off in the app or in Android settings.
Fingerprint / biometricOptional app lock. Your fingerprint is checked by Android; the app never sees or stores it.
Vibration and audio settingsTimer beeps, spoken cues and vibration during workouts.

4. Backups and moving to a new phone

  • Android cloud backup and phone-to-phone transfer are switched off for this app, so your data is not copied to Google or other services.
  • You can choose to export a backup file. It is protected with a password you set. You decide where to save or send it (for example, your files or a messaging app). That service's own privacy policy then applies to the file.
  • Importing a backup restores your data on the new phone. We never see the file or the password.

5. Deleting your data

  • In the app: Settings → Delete all data erases your profile, plan, progress, logs and the encryption key at once.
  • Uninstalling the app also removes all of its data from your phone.

Because we never hold a copy of your data, there is nothing for us to delete on our side.

6. Children

Zero Kit Gym is made for people aged 16 and over. The app asks for your age and does not build a plan for anyone younger. We do not knowingly collect information from children, and the app does not send any information to us.

7. Health information

The app gives general fitness guidance and estimates (such as calories). It is not medical advice. Check with a doctor before starting a new exercise programme, especially if you have a health condition, an injury or are pregnant.

8. Changes to this policy

If this policy changes, the new version will be posted on this page with a new "Last updated" date. If a future version of the app ever needs to collect or share data, we will update this policy and ask for your consent in the app first.

9. Contact

Questions about this policy:

Four-Eyed Gems

Email: zerokitgym@foureyedgems.in

General enquiries: contact@foureyedgems.in