Reaction Time & Reflex vs Sharp Eye
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Reaction Time & Reflex
Test and train your reflexes with a collection of fun mini-games. Measure your reaction speed in milliseconds, track your progress with detailed graphs, and compete with players worldwide on leaderboards. Challenge friends in 2-player duels.
- Reaction time testing
- Reflex training mini-games
- Progress tracking with graphs
- Global leaderboards
- 2-player duels
- Achievements
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How fast are your reflexes? RTap is a reaction time test and reflex trainer packed into 10 fun mini-games. Measure your reaction speed in milliseconds, train every day, watch your progress on graphs and compete with players around the world on the leaderboards. TEST YOUR REACTION TIME Tap the moment you see or hear the signal and get your reaction time in milliseconds. Start with classic tests for visual signals, sound and a race start, then take on harder challenges: pick the right color, avoid the traps, find the emoji and catch what falls. See how your results compare with other players. TRAIN YOUR REFLEXES AND FOCUS Games that call for quick decisions, focus and hand-eye coordination reward practice the most. Play a few rounds a day and watch your scores and consistency go up. 10 GAMES, 30 MODES • Simple Reaction – classic reaction time tests: race start, vision and audio • Color Chooser – tap the right color as fast as you can • Text and Color – a tricky color-word challenge for your brain • Don't Tap Red – react fast, but don't fall for the trap • Sliders – tap at the correct time, • Emoji Finder – spot the right emoji in a crowd • Swiping Games – swipe in the right direction • Falling – catch what falls before it hits the ground • Whack-a-Mole – the arcade classic, built for speed • Time Stop – stop the clock at exactly the right moment Many games come with several difficulty levels, so there is always a new record to chase. COMPETE ON 30 LEADERBOARDS Every mode has its own global leaderboard. See your rank, how many places you climbed and what percentage of players you beat. 63 ACHIEVEMENTS Unlock medals and trophies for hitting target times, mastering difficulty levels and staying consistent. TRACK YOUR PROGRESS WITH GRAPHS Detailed stats and charts show how your reaction speed improves day by day. 2 PLAYER DUELS Challenge a friend on the same device. Both react to the same signal: the faster one wins the round. QUESTIONS AND ANSWERS What is a good reaction time? Most people react to a visual signal in about 200–300 ms. Under 200 ms is very fast. Reactions to sound are usually a bit quicker than reactions to light. Can you improve your reaction time? Yes, to a point. Raw reaction speed improves a little with practice, mostly in the first few sessions. Consistency and reactions that involve a decision, like picking the right color or ignoring a trap, improve much more. Good sleep and staying focused help too. How does RTap measure reaction time? It measures the time between the signal appearing on screen (or the sound playing) and your tap, and shows the result in milliseconds. Your phone's screen and touch sensor add a small delay of their own, so results can vary between devices. Who is RTap for? Anyone who wants faster reflexes: gamers, athletes, drivers, students, or anyone who simply wants to know how fast they are. Can I play with friends? Yes. Play a 2 player duel on one device, or compare your scores with friends on the leaderboards. Start training your reaction time now! Privacy Policy: https://mrjohn10.github.io/rtap/privacy-policy Terms of Use (EULA): https://mrjohn10.github.io/rtap/terms-of-service
Sharp Eye
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Same shape, same color — or is it? Sharp Eye is a visual matching game that starts simple and quietly becomes a memory gauntlet. Pairs of shapes appear inside semi-transparent squares. Instant decision: are they the same in both shape and color? Decide fast — the clock is running. Then the twist kicks in: after every answer the figures slide left and start vanishing. The further you go, the less you see — and the more you must remember. When only one figure remains on screen, that's where the real challenge begins. HOW TO PLAY • Judge each pair: same shape AND color — yes or no • Answer before time runs out • Figures slide off one by one as you play • Recall what you already saw when the screen empties WHY YOU'LL LOVE IT • One decision per second — instant to learn, tough to master • Combines visual matching with short-term memory in one loop • Difficulty rises with every correct answer • Blazing quick rounds — focus training in under a minute • Clean, minimal look with zero distractions A WORKOUT IN ATTENTION TO DETAIL Judging sameness trains selective attention and visual discrimination — the skills behind proofreading, quality checks and noticing what others miss. The vanishing-figure twist adds working memory on top. Two workouts, one game. WHO IS IT FOR? Fans of spot-the-difference, matching puzzles, reaction and focus games. Kids sharpening their eye, adults and seniors training theirs. The screen is fading — how far can you go? Download free and find out! Subscriptions Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Reaction Time & Reflex at none against Sharp Eye's shown. Reaction Time & Reflex also leads on update cadence (every 2 weeks vs monthly). Sharp Eye's advantage is iOS requirement (13.0 vs 15.3). 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. Reaction Time & Reflex sells 9 in-app purchases, starting at $2.99 per 7 days and Sharp Eye sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Reaction Time & Reflex ships an update every 2 weeks, Sharp Eye monthly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Reaction Time & Reflex | Sharp Eye |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (220 ratings) — better | — |
| Positive reviews | 57.9% of reviews | — |
| Number of ratings | 220 — better | — |
| Update frequency | Every 2 weeks — better | Monthly |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.3 | 13.0 — better |
| Further details — not scored | ||
| Size | 71 MB | 28 MB |
| Age rating | 12+ | 4+ |
| Developer | Jan Augustyniak | Ivan Gastilovic |
Bugs and requests
Reaction Time & Reflex
Reported bugs
5 issues- Horrid hit registration on falling circles
- App tracks location
- Pro version error #3
- Sound not working
- Lagging with good network
Requested features
5 requests- Colorblind mode
- More free games
- Unlock games in-game
- Fix falling circles minigame
- Geometry Dash game
Sharp Eye
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Reaction Time & Reflex
- Unlimited Access$2.997 Days
- Unlimited Access3 Days trial2 variants$4.991 Month
- Unlimited Access3 variants$4.997 Days
Show 3 moreShow fewer
- Unlimited Access3 Days trial$7.991 Month
- Unlimited Access3 Days trial2 variants$19.991 Year
- Unlimited Access$19.991 Year
- Unlimited AccessFree
- Unlimited Access$14.99
- Unlimited Access$29.99
Sharp Eye
- 1 Month No Ads Subscription$0.991 Month
- 6 Months No Ads Subscription$4.996 Months
- 1 Year No Ads Subscription$8.991 Year
Questions
Is Reaction Time & Reflex free?
Is Sharp Eye free?
Do Reaction Time & Reflex or Sharp Eye have ads?
Which is updated more often, Reaction Time & Reflex or Sharp Eye?
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