TF Studio · iPhone & iPad
Reflex Reaction Timer Support
Reflex is a local reaction-time game for iPhone and iPad, available in English, Simplified Chinese and German. No login or registration is needed.
How to play
- Tap to start a test.
- Wait until the test area turns green.
- As soon as it turns green, tap the screen as quickly as you can.
- Read your result and start another round when you are ready.
The app shows your current, best and average reaction times and recent records for the current session.
Frequently asked questions
How do I start a test?
Tap to start, wait for the area to turn green, then tap again as quickly as possible.
Why was my tap marked as a false start?
You tapped before the test area turned green. Wait for the green signal before reacting in the next round.
Why are my previous results gone after reopening the app?
Results are kept only during the current app session. Restarting the app clears the current, best and average results and recent records; no result history is saved between sessions.
How do I change the language?
Use the app’s language selector to choose English, 简体中文 or Deutsch. Your preference is saved locally on your device.
Does a display resolution of 0.1 milliseconds mean the same measurement accuracy?
No. Results are displayed to 0.1 ms, but this is a display resolution, not a guarantee that measurement error is only 0.1 ms. Screen refresh, touch input and system scheduling can affect timing. Use Reflex as a reaction-time game, not a precision measuring instrument.
Contact the developer
Developer: Ruifeng Zhang · Tide & Forest Studio
For questions or technical issues, email: [email protected]
To help us investigate, include your device model, iOS version, app version and steps to reproduce the issue. You may also voluntarily attach screenshots.
Please do not send passwords or sensitive personal information.