Last updated: October 12, 2026
Welcome to Speaker Test (the "Application", also listed as Speaker Test: Water Eject and Speaker Test: Left & Right), available for Android and iOS. The Application is developed by Yunus Gündüz, an independent developer based in Türkiye ("we", "us", or "our"). This Privacy Policy explains what information is processed when you use the Application and your choices regarding that information.
Your test history stays on your device. We do not require an account, we do not sell data, and we do not receive your test results. The free version shows banner and interstitial ads served by Google AdMob, which may process device identifiers and approximate location. The Android version is free with ads only: it has no in-app purchases, no Premium and no subscriptions, and all features are free. On iOS, Premium is a one-time purchase that removes ads and adds the PDF report, report history and the automatic microphone check.
The Application is a speaker and stereo testing tool. Diagnostic history and full diagnostic reports are saved only on your device. They are never uploaded to our servers. Uninstalling the Application removes them.
Test tones are generated and played on your device only.
iOS: The optional automatic microphone check (Premium) asks for microphone permission only when you start it. While it runs, the built-in microphones listen to the test tones for about 20 seconds and the sound level is analyzed in memory on your device. No audio is recorded, saved or uploaded. Only the result (levels in dB) is shown, and saved on your device if you choose to save the report. You can turn the permission off at any time in Settings → Speaker Test → Microphone; all other tests work without it.
Android: The Android version does not request microphone permission and does not record any audio.
The free version of the Application shows a banner advertisement on the main and menu screens, and may show an interstitial advertisement when you leave a test. Advertisements are not shown while a test tone is playing. Ads are provided by Google AdMob (Google LLC). The Google Mobile Ads SDK may collect and process:
This data is used for ad delivery, measurement, and fraud prevention. For details, see Google's privacy policy: https://policies.google.com/privacy and Google's advertising policies: https://policies.google.com/technologies/ads
Android: The Android version has no in-app purchases, no Premium and no subscriptions. All features are free and ads are the only form of monetization.
iOS: The optional one-time lifetime Premium purchase is processed by the Apple App Store. We never receive or store your payment card details. Premium removes advertisements and adds the full report (PDF and sharing), the report history and the automatic microphone check. All tests that were free before (speaker check, stereo, tones, frequency sweep, water eject, output devices) stay free. Premium status is checked with the store so that you can restore your purchase on supported devices.
If the Application crashes, it may send an anonymous crash report to our own server at yunusgunduz.com. The report contains:
Crash reports contain no personal data. They are used only to find and fix problems in the Application.
The Application does not request access to your camera, location, or contacts. On iOS it may ask for Microphone (only for the optional automatic check, see above) and App Tracking Transparency (to show personalized ads; declining still shows non-personalized ads). On Android it uses:
The Application is not directed to children under 13. For users identified as children through Google's settings, ads are not personalized.
We may update this Privacy Policy when the Application or store requirements change. The latest version will always be available at: https://yunusgunduz.com/pp/speaker_test_check_privacy_policy.html
If you have any questions or suggestions about this Privacy Policy, please contact us through our contact form: https://yunusgunduz.com/contact.php?lang=en