Comparison

Sensorium vs Reaction Lab

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sensorium

Enhance your senses with daily micro-drills designed to sharpen visual discrimination, auditory precision, reaction speed, and motor control. Track your progress visually and compete with yourself in real-time.

Highlights
  • Visual discrimination drills
  • Auditory precision training
  • Reaction speed enhancement
  • Motor control exercises
  • Progress tracking
  • Real-time ghost mode competition
Features
Read full description

Modern life is sensory deprivation. Screens flatten vision. Headphones collapse sound. You're running at maybe 10% of your nervous system's capacity. Sensorium fixes that. Daily micro-drills. Immediate feedback. Visible progress. 60 seconds a day to sharpen what's gone dull. TRAIN: - Visual discrimination — catch fading targets and shifting hues - Auditory precision — detect frequencies at the edge of hearing - Reaction speed — respond faster under pressure - Motor control — precision with simulated hand tremor TRACK: Your Sensory Radar maps progress across multiple axes. Watch it grow. COMPETE: Ghost Mode lets Pro users race their personal best in real-time. Green means you're ahead. Red means your ghost is winning. FREE: - One activation per day - Three core drills - Streak tracking PRO ($4.99 one-time): - Unlimited training - Full drill library - 8-axis Sensory Radar - Ghost Mode - Choose your focus No subscriptions. No ads. No data collection. Not meditation. Not relaxation. Intensification. Turn your volume to 11.

About

Reaction Lab

Measure and improve your response speed with a suite of scientifically-inspired tests. Track progress over time with detailed analytics and gain insights into your performance in various situations. Designed for focus and privacy, all data stays on your device.

Highlights
  • 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
Features
Read full description

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

Screenshots

Sensorium4 screens
Reaction Lab4 screens

Verdict

The call

The clearest difference is update cadence: Sensorium at every 2 months against Reaction Lab's every 7 months. Sensorium also leads on iOS requirement (15.6 vs 18.0). On price, rating, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sensorium sells 1 one-off in-app purchase and Reaction Lab sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sensorium against 5.0 for Reaction Lab. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

Sensorium ships an update every 2 months, Reaction Lab every 7 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Sensorium versus Reaction Lab: the parameters behind the verdict, then further details
ParameterSensoriumReaction Lab
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Number of ratings12 — better
Update frequencyEvery 2 months — betterEvery 7 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS15.6 — better18.0
Further details — not scored
Size16 MB22 MB
Age rating17+4+
DeveloperJustin NeumanAnthony Harvey

In-app purchases

1 purchases

Sensorium

One-time1
  • Pro Upgrade – Lifetime Access$4.99
2 purchases

Reaction Lab

Subscriptions2
  • React Fast Monthly3 Days trial$1.991 Month
  • React Fast Yearly3 Days trial$4.991 Year

Questions

Is Sensorium free?
Sensorium is free to download, with in-app purchases available.
Is Reaction Lab free?
Reaction Lab is free to download, with in-app purchases available.
Which has better reviews, Sensorium or Reaction Lab?
Sensorium and Reaction Lab are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do Sensorium or Reaction Lab have ads?
Neither Sensorium nor Reaction Lab shows ads.
Which is updated more often, Sensorium or Reaction Lab?
Sensorium ships an update every 2 months, and Reaction Lab every 7 months. Most recently, Sensorium was updated on October 30, 2026 and Reaction Lab on October 31, 2026.

Other comparisons