Privacy Policy

Your Sax Trainer · Last updated 21 August 2026

1. Who we are

Your Sax Trainer ("the app", "we", "us") is a saxophone practice app for Android and iOS. For any privacy question or request, contact us at yoursaxtrainer@gmail.com. We are the data controller for the limited data described below.

2. Microphone and audio

The app needs microphone access to recognise the notes you play. This is the core function of the app and it works as follows:

• Real-time analysis happens on your device. The audio stream is converted into a pitch estimate locally. The audio itself is not stored, not sent to us, and not sent to any third party.
• Recordings only exist if you ask for them. If you enable the record ("REC") option during a practice session, the resulting audio file is saved in the app's own private storage area on your device. You can play back or delete your recordings from within the app, and they are never uploaded.
• Uninstalling removes them. Deleting the app deletes its private storage, including any recordings.

You can withdraw microphone permission at any time in your device's system settings. The note-recognition features will stop working, but the rest of the app remains usable.

3. Data stored on your device

The app keeps the following on your device only, so that it can show your progress:

• Practice and test session history, scores, streaks, and per-note statistics
• Achievements, daily challenge results, and spaced-repetition scheduling data
• Your settings: instrument, language, theme, reminder time, and difficulty
• Songs you create in the app, and your audio recordings if you make any

We cannot see any of this. If you use the export feature, a backup file is created and handed to your device's share sheet; where it goes from there is entirely your choice.

4. Analytics and crash reporting

There are none. The app ships with no analytics service and no crash reporting service. We do not measure which features you use, we do not count sessions, and we do not receive a report when the app crashes. Nothing about your use of the app is transmitted to us or to any third party for these purposes, and there is no setting to turn on, because there is nothing to collect.

The practical consequence is that we learn about bugs only when someone tells us. If something goes wrong, please email yoursaxtrainer@gmail.com.

5. Tracking across other apps

We do not track you across other companies' apps or websites, and we do not use advertising identifiers. On iOS, this is why the app never shows the "Allow app to track your activity" prompt: that prompt exists to request permission we have no use for. On Android, the app does not request the advertising ID permission.

6. Subscriptions and payments

The app offers an optional premium subscription. Purchases are handled entirely by Google Play or the Apple App Store, and we never see or store your card details, billing address, or payment credentials.

To know whether your subscription is active, we use RevenueCat, which receives an app user identifier along with the purchase receipt from the store. See RevenueCat's Privacy Policy. Your free-session counter is stored on your device.

On Android that identifier is the Android ID, a value the operating system generates for this app on this device. We use it for two things and nothing else: so that your subscription is still there after you reinstall the app without having to restore it, and so that the free trial is counted once per device rather than restarting on every reinstall. It is not an advertising identifier, it cannot be matched with any other app's copy — Android scopes it per app — and we never attach it to your name, email, or anything else that could identify you. A factory reset replaces it. On iOS, a randomly generated anonymous identifier is used instead.

7. Notifications

If you turn on practice reminders, they are scheduled locally by your device. No reminder data leaves your phone, and we cannot send you push messages. You can disable them in the app or in your system settings.

8. What we never do

• We do not require an account, and we do not collect your name, email, or phone number.
• We do not sell or rent personal information, and we do not "share" it for cross-context behavioural advertising as defined by California law.
• We do not show ads or use advertising networks.
• We do not upload your audio.

9. Children

The app is suitable for general audiences but is not directed at children under 13, and we do not knowingly collect personal information from them. Because there are no analytics and no account is required, a child using the app sends us nothing at all. If you believe a child has provided us with personal information, contact us and we will delete it.

10. Your rights, and how to delete your data

Depending on where you live, you may have rights to access, correct, delete, or port your personal data and to object to processing.

• Data on your device: you already have full control. Reset your statistics in the app, delete recordings individually, or uninstall the app to erase everything.
• Usage data: there is nothing to request, because we never receive any.
• Purchases: manage or cancel your subscription through your Google Play or Apple App Store account.

Our legal basis for processing your purchase status is the performance of our contract with you; we have no other processing to justify. Contact yoursaxtrainer@gmail.com to exercise any right; we aim to respond within 30 days. If you are in the EU or UK you may also complain to your local data protection authority.

11. Retention

On-device data stays until you delete it or uninstall the app. We hold no usage or crash data at all, so there is nothing on our side to retain. Purchase receipts are kept by RevenueCat and the app stores for as long as needed to service your subscription.

12. Changes to this policy

If we change how we handle data, we will update this page and revise the date above. Material changes will also be highlighted in the app.