Turn Light On vs ReactionTimeChecker
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Turn Light On
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Turn Light On is a simple game that tests your reflexes. Use your finger to touch the lights and turn them on! You may beat your best time with each attempt. Test your reflexes and your speed. Key Features: - Game Center Enabled. - Cool graphics effect. - Very Easy gameplay. - Different difficult levels. - Good music keep you entertaining. - Endless game play.
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 ads: Turn Light On at none against ReactionTimeChecker's shown. Turn Light On also leads on update cadence (every 5 weeks vs every 7 months) and iOS requirement (12.1 vs 15.6). On price, 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.
Turn Light On ships an update every 5 weeks, ReactionTimeChecker every 7 months. The most recent releases landed on October 11, 2026 and October 23, 2026 respectively.
| Parameter | Turn Light On | ReactionTimeChecker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Positive reviews | — | 33.3% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 5 weeks — better | Every 7 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 15 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Giuseppe Calcagno | NSC, K.K. |
In-app purchases
Turn Light On
No in-app purchases
ReactionTimeChecker
No in-app purchases
Questions
Is Turn Light On free?
Is ReactionTimeChecker free?
Do Turn Light On or ReactionTimeChecker have ads?
Which is updated more often, Turn Light On or ReactionTimeChecker?
Other comparisons
