Support

Questions, bug reports and feature requests for Tennis Timer are all welcome.

Contact

Email yoonnamkung@gmail.com. We usually reply within 3 business days.

To help us reproduce a problem, please include your iPhone model, your iOS version, and the steps that led to it.

Does the app need an internet connection?: No. Tennis Timer works entirely offline and makes no network requests. You can use it in airplane mode.
Do the sound cues keep playing when my screen is off?: Yes. Audio continues while the screen is locked or another app is in the foreground, so you can train without watching your phone. Cues are mixed over your music rather than replacing it.
Where is my workout data stored?: On your iPhone only. Nothing is uploaded, and deleting the app permanently removes all of your workout history, drills and settings.
Which devices are supported?: iPhone running iOS 17.0 or later. iPad and Apple Watch are not supported in this version.

Tennis Timer collects no data at all. See the Privacy Policy for details.