Timer Challenge vs ZeroIn
Price, ratings, monetisation and update history for both games, side by side ā with what reviewers say about each.
Timer Challenge
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Are you ready to test your absolute split-second reflexes and precision? Welcome to PerfectStop, the ultimate high-speed reaction challenge! The concept is simple but incredibly challenging: a high-speed millisecond timer starts running, and your goal is to tap and stop it exactly on the target second (like 1.00s, 5.00s, or 10.00s) down to the exact millisecond! It is a game of pure focus, rhythm, and timing. Why you will love PerfectStop: ⢠THRILLING CAMPAIGN STAGES Navigate through multiple solo levels designed to test your limits. Be prepared for dynamic speed shifts! In advanced levels, the digital timer disappears completely after a few seconds, forcing you to rely solely on your internal clock and rhythm to hit the perfect stop. ⢠HEAD-TO-HEAD VERSUS MODE Compete against your friends on a single split-screen! Test your reflexes in real-time local multiplayer to see who possesses the sharpest focus and fastest reaction time. ⢠STUNNING CYBER-NEON AESTHETICS Immerse yourself in a beautiful, futuristic cyberpunk visual theme. Enjoy pulsating neon lights, glowing target rings, dynamic animations, and satisfying haptic feedback that makes every perfect stop feel amazingly rewarding. ⢠GO PREMIUM (ADS FREE) Instantly remove all banner and interstitial ads and unlock all single-player stages with a single, quick in-app purchase. Keep your focus uninterrupted! Put your timing and focus to the test. Can you hit a Perfect Stop? Download PerfectStop now and claim your crown as the timing master! --- ⢠PRIVACY & TERMS Privacy Policy: https://shorturl.at/H93S1 Terms & Conditions: https://shorturl.at/wBTJM
ZeroIn
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ZeroIn is built on pure timing: easy to learn, hard to master. The clock runs; your only job is to stop it exactly on target. The closer you get, the more stars you earn. 318 LEVELS, RISING DIFFICULTY Levels were redesigned from scratch. No dead time between rounds ā every phase introduces a new mechanic. THREE GAME TYPES ⢠Math ā the target time is the answer to a problem. If it's 3 Ć 2, stop the clock at 6.00. ⢠Time estimation ā the clock is hidden; only your inner sense of time. ⢠Vanishing number ā digits show for two seconds, then fade away. ONLINE TABLES ⢠Real-time races with up to 12 players ⢠Invite a friend with a link ā they land straight at your table ⢠Empty lobby? Start against bots right away, no waiting ⢠Rematches, trophies and rankings SEASONS A fresh ranking every month. At the end of the month the top three get an exclusive frame and a full season of Pro perks. START BUTTONS Unlock new START buttons with the stars you collect: prism, magma, black hole, clockwork and more. Your pick stays with you through every game. LIVES AND REWARDS Lives refill over time. Collect stars to earn bonus lives, watch a rewarded ad, or go unlimited with ZeroIn Pro. ZeroIn Pro: no ads, unlimited lives, an exclusive frame and every button unlocked.
Screenshots
Verdict
The clearest difference is update cadence: ZeroIn at every 5 days against Timer Challenge's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Timer Challenge sells 1 one-off in-app purchase and ZeroIn sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Timer Challenge ships an update every 2 months, ZeroIn every 5 days. The most recent releases landed on September 5, 2026 and September 17, 2026 respectively.
| Parameter | Timer Challenge | ZeroIn |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 5 days ā better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.0 ā better |
| Further details ā not scored | ||
| Size | 15 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | MUNEER SABLAL | Emre ALTUN |
In-app purchases
Timer Challenge
- Remove Ads & Unlock All$0.99
ZeroIn
- Life Refill$1.99
- Remove Ads$3.99
- ZeroIn Pro$9.99








