# Reaction Lab - Reflex Tests — Improve Your Reaction Time > Suite of tests to measure and improve reaction time, with detailed analytics. (iPhone/iPad app by Anthony Harvey.) - Source: https://appshunter.io/ios/app/reaction-lab-reflex-tests/id6757831974 (this page in markdown: same URL + `.md`) - Developer: [Anthony Harvey](https://appshunter.io/developer/1478197285) - Category: Health & Fitness, Education - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 18.0 · 22 MB - Languages: American English - Released: 2026-01-21 - Data updated: 2026-09-09 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/reaction-lab-reflex-tests/id6757831974/reviews.md ## What is Reaction Lab? 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. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://anthonyharveyapps.com/privacy-policy-reaction-lab ## Key features - Multiple reaction time test types - Visual, audio, and haptic cues - Grip-release and motion-based tests - Dual-task and fatigue tracking - Detailed session summaries and trend charts - On-device data privacy - Offline functionality ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | React Fast Yearly | $4.99 | per year | | React Fast Monthly | $1.99 | per month | ## Frequently asked questions about Reaction Lab ### What is Reaction Lab? Reaction Lab is a suite of tests designed to measure and help you improve your reaction time. It offers various test types to assess different response pathways and provides detailed analytics on your performance over time. ### What types of reaction tests does Reaction Lab offer? Reaction Lab includes simple visual tap, choice reaction, audio reaction, haptic reaction, grip-release, motion reaction, dual-task under load, fatigue drift, anticipation vs reaction, and asymmetry testing. ### How does Reaction Lab track progress? The app automatically saves your sessions and provides session summaries (median, average, best, worst, variability), accuracy metrics, and trend charts for different test types over 7, 30, or 90 days. ### Is Reaction Lab free to use? Reaction Lab is free to download and use. It offers optional subscription plans for enhanced features, with a 3-day free trial available for monthly and yearly subscriptions. ### Does Reaction Lab have ads? No, Reaction Lab does not contain advertisements. It is designed to be a distraction-free tool for testing and improving reaction time. ### Is my data private with Reaction Lab? Yes, Reaction Lab is fully on-device and private. Your data stays on your device, with no accounts, cloud sync, or tracking required, and it works offline. ### What are the subscription options for Reaction Lab? Reaction Lab offers two subscription plans: React Fast Monthly for $1.99/month and React Fast Yearly for $4.99/year. Both plans include a 3-day free trial. ### What devices is Reaction Lab compatible with? Reaction Lab is currently supported on iPhone devices. It was last updated on January 21, 2026, with version 1.0. ## Version history (last 2 releases) ### 1.1 — 2026-08-19 • NEW: Start Lights — five red lights, then tap the instant they go out • Run any test again straight from your results • Share a results card, or export CSV • Daily streaks, an optional reminder, and a home screen widget ### 1.0 — 2026-01-21 No release notes. ## Apps similar to Reaction Lab | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sensorium: Train Your Senses](https://appshunter.io/ios/app/sensorium-train-your-senses/id6757092992) | — | Free | Health & Fitness | | [Athletic Reaction Coach](https://appshunter.io/ios/app/athletic-reaction-coach/id481955262) | 1.0 (2) | $0.99 | Health & Fitness | | [STEPS Problem Solving Training](https://appshunter.io/ios/app/steps-problem-solving-training/id6745620987) | — | Free | Health & Fitness | | [Smart Trainer app](https://appshunter.io/ios/app/smart-trainer-app/id6747401793) | — | Free | Health & Fitness | | [CogniTrack: Reaction Time Test](https://appshunter.io/ios/app/cognitrack-reaction-time-test/id6760599542) | 5.0 (2) | Free | Health & Fitness | | [Reflex Training Exercises](https://appshunter.io/ios/app/reflex-training-exercises/id6757096978) | 4.7 (7) | Free | Health & Fitness | ## More apps by Anthony Harvey - [Workout Dice: Workout Anytime](https://appshunter.io/ios/app/workout-dice-workout-anytime/id1478197406) - [2 Players 1 Device: Tabletop](https://appshunter.io/ios/app/2-players-1-device-tabletop/id1504000687) - [Workout at Home or Anywhere](https://appshunter.io/ios/app/workout-at-home-or-anywhere/id1526996611) - [Encrypt Messages: Secret Text](https://appshunter.io/ios/app/encrypt-messages-secret-text/id1544005169) - [Twist Spinner: Hands Free App](https://appshunter.io/ios/app/twist-spinner-hands-free-app/id1548034818) - [NH Criminal & Vehicle Code](https://appshunter.io/ios/app/nh-criminal-and-vehicle-code/id1559649316) All apps by Anthony Harvey: https://appshunter.io/developer/1478197285 ## Related topics [reaction testme](https://appshunter.io/ios/topics/reaction-testme) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*