Comparison

StopTime vs Clock Challenge

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

Head to head
About

StopTime

Test your internal clock by stopping a stopwatch at precisely the right moment without any visual cues. Compete with friends or players worldwide across multiple game modes designed to challenge your time perception.

Highlights
  • Stopwatch timing challenges
  • No visual hints or numbers
  • Party mode for 2-4 players
  • 8 unique game modes
  • Global leaderboard
  • Personal stats tracking
  • Unlockable Pro modes
Features
Read full description

Simple to learn. Impossible to master. How good is your sense of time? Start the stopwatch, feel the seconds, and stop it at exactly the right moment. No numbers, no hints — just you and your internal clock. HOW IT WORKS Every game is 5 rounds. Hit the target time as precisely as you can. The smaller your total deviation, the higher your score. Milliseconds decide everything. PARTY MODE — 2-4 PLAYERS, ONE PHONE Pass the phone around. Same target, blind rounds, no peeking. The most precise player takes the win. Perfect for parties, road trips, and settling arguments once and for all. 8 GAME MODES Each mode tests your time perception in a different way — from relaxed practice to Pro modes that punish a single millisecond. COMPETE AND IMPROVE - Global leaderboard: see how your timing ranks worldwide - Personal stats and progress tracked round by round - Pro modes to unlock when normal stops being a challenge - One game takes under a minute — play anywhere, anytime Nobody is good at this on the first try. That's the point. How accurate is your sense of time? Tap start and find out.

About

Clock Challenge

A minimalist game where players aim to stop a timer at precisely 10.000 seconds. With only one attempt per day, players compete for a spot on the leaderboard and build daily streaks. The game emphasizes precision and fairness for all players.

Highlights
  • One daily attempt
  • Stop timer at 10.000 seconds
  • Daily leaderboard
  • Build streaks
  • Server-checked times
  • Cross-device sync
Features
Read full description

Stop the timer at exactly 10.000 seconds. That's it. That's the game. You get ONE attempt per day. One press, one score. Land on the board and your name goes up in lights. Miss it and the clock is locked until tomorrow. PLAY IN ONE TAP No sign-up wall. Open the app, hit START, hit STOP. Claim your player name after your first shot to put your time on the leaderboard. ONE SHOT A DAY No retries. No grinding. Your daily press is your score, so make it count. YOUR NAME IN LIGHTS Today's board shows the exact time everyone stopped at. The Month and Year boards rank average miss over rolling 30 and 365 days, so consistency wins the long game. Streak board tracks who shows up every day. BUILD YOUR STREAK Play every day to grow your streak. Miss a day and it's gone. SIMPLE. BRUTAL. FAIR. Same clock, same target, same single chance for everyone. Millisecond precision. Server-checked times, so no cheaters on this board. Link your email once to keep your name and streak on every device. Free to play. No ads. Fun for all ages. Good luck... and NO BLINKING.

Screenshots

StopTime4 screens
Clock Challenge4 screens

Verdict

The call

The clearest difference is update cadence: StopTime at every 5 days against Clock Challenge's fortnightly. StopTime also leads on iOS requirement (13.0 vs 16.4). On price, rating, ratings volume and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for StopTime against 5.0 for Clock Challenge. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

StopTime ships an update every 5 days, Clock Challenge fortnightly. Both last shipped on October 31, 2026.

Scorecard2 real differences · 8 level
StopTime versus Clock Challenge: the parameters behind the verdict, then further details
ParameterStopTimeClock Challenge
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 5 days — betterFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.4
Further details — not scored
Size130 MB30 MB
Age rating4+4+
DeveloperArman MkhitarianTravis Moher

In-app purchases

None

StopTime

No in-app purchases

None

Clock Challenge

No in-app purchases

Questions

Is StopTime free?
StopTime is free to download, with no in-app purchases.
Is Clock Challenge free?
Clock Challenge is free to download, with no in-app purchases.
Which has better reviews, StopTime or Clock Challenge?
StopTime and Clock Challenge are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do StopTime or Clock Challenge have ads?
Neither StopTime nor Clock Challenge shows ads.
Which is updated more often, StopTime or Clock Challenge?
StopTime ships an update every 5 days, and Clock Challenge fortnightly. Most recently, StopTime was updated on October 31, 2026 and Clock Challenge on October 31, 2026.

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