Reaction Test Pro vs ReactionTimeChecker
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Reaction Test Pro
Test your reflexes with precision down to the microsecond. Engage in a variety of fun mini-games designed to challenge your speed and skill. Compete with friends and players globally on leaderboards.
- Microsecond reaction time measurement
- Multiple mini-games
- Global leaderboards
- Challenge friends
- Skill-based challenges
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Welcome to the Top Reaction Test App on the App Store! Measure your reaction times to the microsecond and compete with your friends and others around the world in a series of exciting mini-games designed to push your skill to the edge. Games include: - Race Lights-Out - Whack-a-dot - Colour change - Ruler drop Game Center allows you to challenge friends and take your place on global leaderboards - giving you that ultimate flex.
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.
- Reaction time testing
- Color-changing button gameplay
- Score and evaluation display
- Online ranking system
- Automatic result upload
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[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
Screenshots
Verdict
The clearest difference is rating: Reaction Test Pro at 4.3 against ReactionTimeChecker's 1.0. Reaction Test Pro also leads on ads (none vs shown) and ratings volume (215 vs 1). On price, update cadence, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Reaction Test Pro holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Reaction Test Pro has 215 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 53% of Reaction Test Pro's written reviews are positive against 33% of ReactionTimeChecker's.
Reaction Test Pro ships an update every 9 months, ReactionTimeChecker every 7 months. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.
| Parameter | Reaction Test Pro | ReactionTimeChecker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (215 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 53.2% of reviews — better | 33.3% of reviews |
| Number of ratings | 215 — better | 1 |
| Update frequency | Every 9 months | Every 7 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 7 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Freedom Apps | NSC, K.K. |
Customer experience
Reaction Test Pro
ReactionTimeChecker
In-app purchases
Reaction Test Pro
No in-app purchases
ReactionTimeChecker
No in-app purchases
Questions
Is Reaction Test Pro free?
Is ReactionTimeChecker free?
Which has better reviews, Reaction Test Pro or ReactionTimeChecker?
Do Reaction Test Pro or ReactionTimeChecker have ads?
Which is updated more often, Reaction Test Pro or ReactionTimeChecker?
Other comparisons
