A reaction-time testing suite with multiple test types measuring different response pathways, plus analytics for tracking performance over time.
Specifications
Platforms: iPhone and iPad
Developer: AH Apps LLC
About this app
Reaction Lab is a fast, accurate reaction-time testing suite built to help you measure and understand how quickly you respond in different situations. Whether you’re training for sports, improving focus, or tracking performance over time, Reaction Lab gives you clean, scientifically-inspired tests and easy-to-read analytics—right on your iPhone.
Test Your Reaction Time in Multiple Ways
Reaction time isn’t just one thing. Reaction Lab includes multiple test types designed to measure different pathways and skills:
Simple Visual Tap – Tap as soon as a visual stimulus appears
Choice Reaction – Respond to directional or on-screen prompts with speed and accuracy
Audio Reaction – React to sound cues for “eyes-off” testing
Haptic Reaction – React to vibration cues with no visuals or audio
Grip-Release (Inhibitory Control) – Hold, then release as fast as possible when prompted
Motion Reaction – React by moving the phone (tilt/lift/rotate)
Dual-Task Under Load – React while performing a secondary task to measure real-world performance
Fatigue Drift – Track how reaction time changes over a continuous timed session
Anticipation vs Reaction – Detect premature responses and impulse control patterns
Asymmetry Testing – Compare dominant vs non-dominant performance
Track Progress Over Time
Reaction Lab automatically saves your sessions and turns raw reaction data into meaningful insights:
Session summaries: median, average, best, worst, variability
Accuracy metrics: false starts, errors, timeouts
Trend charts by test type over 7 / 30 / 90 days
Per-session breakdowns across every trial
Clean, Focused, Tool-Like Design
Reaction Lab is built to be simple, fast, and distraction-free:
Large touch targets and high-contrast test screens
Clear trial progress indicators
Instant feedback on mistakes or false starts
Smooth navigation between tests, history, insights, and settings
Fully On-Device and Private
Your data stays on your device.
No accounts
No cloud sync required
No tracking
Works offline
If you’ve ever wondered how your reaction time changes with training, fatigue, stress, or consistency—Reaction Lab gives you the tools to measure it.
Download Reaction Lab and start testing.
Frequently asked questions
What is Reaction Lab - Reflex Tests?
A reaction-time testing suite with multiple test types measuring different response pathways, plus analytics for tracking performance over time.
What devices does Reaction Lab - Reflex Tests run on?
Reaction Lab - Reflex Tests runs on iPhone and iPad. It requires 18.0 or later.
How do I measure and improve my reaction time?
Test the same way each session and track the trend, not a single score. Reaction Lab - Reflex Tests on iPhone includes multiple test types that measure different response pathways, plus analytics that chart performance over time so you can see whether sleep, caffeine, or training are changing your results. A few runs a week is enough to establish a baseline.