Comparison

ReactionTimeChecker vs Reaction Speed Reflex Trainer

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

Head to head
About

ReactionTimeChecker

Test your reflexes by tapping a color-changing button as quickly as possible. Compete with others through online leaderboards and receive an evaluation of your performance.

Highlights
  • Reaction time testing
  • Color-changing button gameplay
  • Score and evaluation display
  • Online ranking system
  • Automatic result upload
Features
Read full description

[What is this game?] -This game can test your earliness of a reaction(reflexes). [How to Play] -First,You can see 25 buttons(5*5). -When a game starts,any one of the 25 buttons color will change to PINK. -You TAP the glowing pink button as soon as possible! -After the game ended, you can see your SCORE and EVALUATION(Japanese KANJI). [Online Ranking] This app will automatically upload your play results to the online ranking server. If you do not agree to the automatic registration on the online ranking server, please refrain from using this app. The data uploaded to the server is as follows. 1. The name entered on the title screen (If you do not enter the name, it will be automatically registered with the name "unknown".) 2. Play result (average reaction time) In addition, please check the following privacy policy. https://www.nscnet.jp/privacyPolicy.html *If you are using iOS 14.5 or later, a dialog asking for tracking permission will be displayed at the first startup. This setting can be confirmed and changed in the "Settings" app, "Privacy", and "Tracking". Production: NSC, K.K. If you have any problems or requests, please check the contents of the “Contact Us” page on our website and send us an e-mail. Click here for “Contact Us”: https://www.nscnet.jp/inquiry.html

About

Reaction Speed Reflex Trainer

Sharpen your reflexes and boost reaction speed with engaging game modes. Measure your reaction time to the millisecond, compete on global leaderboards, and track your progress. Ideal for improving focus, training reflexes, or simply for fun.

Highlights
  • Reaction time measurement
  • Multiple game modes
  • Global leaderboards
  • Progress tracking
  • Focus and reflex training
Features
Read full description

Boost your reaction speed and sharpen your reflexes with the ultimate Reaction Time Test app! Designed for simplicity and fun, this app puts your reaction time to the ultimate test. Tap the moment the screen changes from red to green and see your reactions measured down to the millisecond. Explore exciting game modes that challenge your reflexes and reaction skills: Classic Reaction Test: Tap the moment the screen turns green. Lights Out: Inspired by Formula 1, react to the lights turning off as quickly as possible. Chimp Test: Test your memory and reactions simultaneously in this unique challenge. Aim Game: Hit 30 targets as fast as you can to test your speed, precision, and reactions. The Hole: A fun twist that combines accuracy and reaction timing. Compete with others by climbing the reaction leaderboards and comparing scores with players worldwide. Track your reaction progress, smash your personal best, and see your reaction time improve with every game mode. Whether you’re improving focus, training reflexes, or just having fun, this app is the ultimate tool to train and test your reaction time. Download now to test, train, and dominate your reactions! EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ReactionTimeChecker4 screens
Reaction Speed Reflex Trainer4 screens

Verdict

The call

The clearest difference is rating: Reaction Speed Reflex Trainer at 4.6 against ReactionTimeChecker's 1.0. Reaction Speed Reflex Trainer also leads on ratings volume (1.4K vs 1) and review sentiment (53% vs 33%). ReactionTimeChecker's advantage is in-app purchases (none vs 4). On price, update cadence, ads and device support 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. Reaction Speed Reflex Trainer sells 4 in-app purchases, starting at $0.99 per 7 days. ReactionTimeChecker asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Reaction Speed Reflex Trainer holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: Reaction Speed Reflex Trainer has 1.4K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of ReactionTimeChecker's written reviews are positive against 53% of Reaction Speed Reflex Trainer's.

UpkeepUpdate frequency

ReactionTimeChecker ships an update every 7 months, Reaction Speed Reflex Trainer every 3 months. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
ReactionTimeChecker versus Reaction Speed Reflex Trainer: the parameters behind the verdict, then further details
ParameterReactionTimeCheckerReaction Speed Reflex Trainer
PriceFreeFree
Rating1.0 (1 ratings)4.6 (1.4K ratings) — better
Positive reviews33.3% of reviews53.4% of reviews — better
Number of ratings11.4K — better
Update frequencyEvery 7 monthsEvery 3 months — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.6
Further details — not scored
Size22 MB27 MB
Age rating4+4+
DeveloperNSC, K.K.Vicki Partridge

Customer experience

ReactionTimeChecker

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

Reaction Speed Reflex Trainer

All ratings1,408 ratings
Positive91.4%
Neutral3.6%
Negative5.0%
Written reviews133 reviews
Positive53.4%
Neutral8.3%
Negative38.3%

Bugs and requests

ReactionTimeChecker

Not enough reviews yet to summarise bugs or requests.

Reaction Speed Reflex Trainer

Reported bugs

3 issues
  • Reaction time not updating correctly
  • Crashes when trying to use paid features
  • Ads continue to show even after purchasing ad-free version

Requested features

3 requests
  • Track personal best reaction time
  • Add more game modes and challenges
  • Improve ad placement and reduce interruptions

In-app purchases

None

ReactionTimeChecker

No in-app purchases

4 purchases

Reaction Speed Reflex Trainer

Subscriptions3
  • Weekly Subscription7 Days trial$0.997 Days
  • Monthly Subscription7 Days trial$4.991 Month
  • Yearly Subscription7 Days trial$9.991 Year
One-time1
  • Remove Ads$1.99

Questions

Is ReactionTimeChecker free?
ReactionTimeChecker is free to download, with no in-app purchases.
Is Reaction Speed Reflex Trainer free?
Reaction Speed Reflex Trainer is free to download, with in-app purchases available.
Which has better reviews, ReactionTimeChecker or Reaction Speed Reflex Trainer?
Reaction Speed Reflex Trainer is rated higher. ReactionTimeChecker averages 1.0 out of 5 from 1 ratings, while Reaction Speed Reflex Trainer averages 4.6 from 1.4K ratings.
Do ReactionTimeChecker or Reaction Speed Reflex Trainer have ads?
Both ReactionTimeChecker and Reaction Speed Reflex Trainer show ads.
Which is updated more often, ReactionTimeChecker or Reaction Speed Reflex Trainer?
ReactionTimeChecker ships an update every 7 months, and Reaction Speed Reflex Trainer every 3 months. Most recently, ReactionTimeChecker was updated on October 23, 2026 and Reaction Speed Reflex Trainer on October 30, 2026.

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