Comparison

Reaction Time & Reflex Speed vs Stop the Timer

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

Head to head
About

Reaction Time & Reflex Speed

Features
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Reaction Time is a fast, focused arcade challenge built around one goal: tap with precision. Three modes, three ways to test yourself: • Zap Reactor: wait for the cue and react under a shrinking time limit. • Neon Rail: stop the beam inside the zone as it speeds up and narrows. • Chrono Snap: hit the stop as close to 2.000s as you can. Progress through levels, survive three strikes, and chase tighter windows. Track your best runs, highest levels, and tightest locks in detailed stats. Crisp visuals, haptics, and sound controls keep the experience punchy and clean. No accounts, no clutter — just quick sessions that sharpen your timing.

About

Stop the Timer

Test your sense of time in this reflex challenge where you tap to stop a hidden timer. Compete in different game modes, track your progress, and aim for perfect stops. It's a simple yet challenging game of precision and focus.

Highlights
  • Hidden timer reflex challenge
  • Three distinct game modes
  • Scored to the hundredth of a second
  • Adjustable difficulty levels
  • Progress tracking and achievements
  • Offline play
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THE CLOCK HIDES. YOU COUNT. Tap GO. Count in your head. Tap STOP at exactly the right moment. That's it. That's the game. And it's way harder than it sounds. Stop the Timer is the viral stopwatch challenge, built into a real game for iPhone. No aiming, no puzzles, no luck. Just you and your sense of time. You've seen it all over your feed. Now it's your turn. THREE WAYS TO PLAY SUDDEN DEATH One life. Each round the target gets longer and the timing gets stricter. Chain PERFECT stops, build a streak, and see how deep you can go before one miss ends it all. LADDER Ten rounds, climbing from 1 second to 10. Every hundredth you're off adds up. Lowest total wins. Two minutes, endlessly replayable. FREE PLAY Make your own game. Set the timer, pick the target, choose how the answer is revealed. Practice on your own or pass the phone around and settle it with friends. FAIR DOWN TO THE HUNDREDTH Stop at 10.01 and the game says 10.01. Every stop is scored to the hundredth of a second, so a PERFECT is real bragging rights. You always see your target, your time, and exactly how close you came. PICK YOUR CHALLENGE • Easy: the timer stays visible the whole time • Medium: a quick peek, then it hides • Hard: fully hidden, no help. The real flex. Start easy. Train your inner clock. Then go for Hard. WATCH YOURSELF GET GOOD Track your best streak, your longest run, and how close you land on average. Earn all eight achievements. Beat your own best, then beat it again. FREE. OFFLINE. NO NONSENSE. • No ads, no subscriptions, no in-app purchases • Plays anywhere: airplane mode, the subway, the couch • No account, no sign-up, no data collection • Small download, instant play Can you stop it at exactly 10.00? One way to find out.

Screenshots

Reaction Time & Reflex Speed4 screens
Stop the Timer4 screens

Verdict

The call

Reaction Time & Reflex Speed and Stop the Timer are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
Reaction Time & Reflex Speed versus Stop the Timer: the parameters behind the verdict, then further details
ParameterReaction Time & Reflex SpeedStop the Timer
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 4 months—
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS18.618.0 — better
Further details — not scored
Size2 MB16 MB
Age rating4+4+
DeveloperZafflesCovelo Tech

In-app purchases

None

Reaction Time & Reflex Speed

No in-app purchases

None

Stop the Timer

No in-app purchases

Questions

Is Reaction Time & Reflex Speed free?
Reaction Time & Reflex Speed is free to download, with no in-app purchases.
Is Stop the Timer free?
Stop the Timer is free to download, with no in-app purchases.
Do Reaction Time & Reflex Speed or Stop the Timer have ads?
Neither Reaction Time & Reflex Speed nor Stop the Timer shows ads.

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