Speed Test Reflexes
Measure and train your reflex speed
Overview
Tap the instant the screen turns green to measure your reaction time and see your world percentile instantly. Also includes multi-touch Buttons (3×3–5×5) and a two-player VS mode.
Latest version
- iPhone 3.0
- iPad 3.0
- Android 3.0
App-side updated: 2026-07-18
Release notes
Speed Test Reflexes 3.0: a complete redesign. • Bold new look • Redesigned Measure mode with an instant world percentile • Shareable result card - challenge your friends • Global rankings via Game Center • New 5-attempt average mode • Japanese / English
Speed Test Reflexes
Support / FAQ
Frequently asked questions about Speed Test Reflexes, along with how to contact us.
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How accurate are the measurements?
The app's measurements depend on your device's display response speed and processor performance. They are accurate enough for relative comparisons on the same device, but they are not suitable for strict comparisons across different devices or for medical or scientific purposes. Please enjoy them as a reference for reflex training.
What devices are supported?
The app supports iPhone running iOS 17.0 or later, iPad running iPadOS 17.0 or later, and Android devices running Android 8 or later. It may not work correctly on earlier OS versions.
Where is my measurement data saved?
Measurement data is stored on your device. Only if you are signed in to Game Center (iOS version) or Google Play Games (Android version), your best score in Measure mode (single attempt) is submitted automatically for the world ranking. If you are not signed in, no data is ever sent externally. Please note that deleting the app erases the data stored on your device.
What measurement modes are available?
The app has the following three modes.
- Measure mode: tap the moment the screen turns green to measure your reaction time. You can choose between single best and 5-attempt average, and your world percentile (an estimate of your global standing) is displayed
- Button mode: a multi-touch challenge where you quickly tap the correct button on a 3×3 / 4×4 / 5×5 grid
- VS mode: two players compete head-to-head on a single device to test their reflexes
What is the world ranking?
It is a feature that sends your best score to Game Center (iOS version) or Google Play Games (Android version) so you can compete with players around the world on a leaderboard. You can also share your result as a card. Rankings are separate for each platform.
Is there a charge for the app?
The app is free to use (with ads). You can permanently remove ads with a one-time in-app purchase. Once purchased, "Restore Purchases" is also supported.
The app is not working properly
Please try the following steps.
- Fully quit the app and launch it again
- Restart your device
- Update to the latest version from the App Store / Google Play
- Delete the app and reinstall it (the measurement data on your device will be erased)
If this does not resolve the issue, please contact us at the address below.
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If you have any questions or requests, feel free to contact us at the email address below.
- Email: contact@lft-farm.com
- Developer: LFT Inc.
To help us respond smoothly, please include the following information.
- Your device name (e.g., iPhone 16, iPad Air)
- Your OS version (e.g., iOS 18.0)
- A detailed description of the problem
Still need help?
If the answers above didn't resolve it, please use our contact form.