Till Zero vs Odd One
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Till Zero
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Subtract to exactly zero โ before the clock runs out. Every round gives you a target number inside a ticking timer ring and a board of numbered tiles. Tap tiles to subtract their values from the target. Hit exactly zero to clear the round, earn bonus time, and face a fresh board with a tougher target. Overshoot, and the round resets while the clock keeps draining. Time never stops โ when it reaches zero, the run is over. Easy to learn in one round. Hard to put down after fifty. SPECIAL TILES BEND THE RULES Twelve special tiles change the math when you least expect it: โข TIME FREEZE โ stops the clock cold for a few precious seconds โข BOMB โ comes with a lit fuse; spend it in time or take the penalty โข POISON โ pays bonus points, then drains your clock while the toxin lasts โข CHAIN โ your next move must be an adjacent tile, so think fast โข LINKED โ comes in pairs; tap one and you're committed to its partner โข LOCKED โ sealed shut until you've cleared enough tiles this round โข NEGATIVE โ pushes the target back up instead of down โข RANDOM โ a hidden value revealed only when you tap it, with a points bonus โข DECAY โ its value rots away on a timer; grab it early or grab it cheap โข SWAP โ re-rolls the tiles around it into brand-new values โข SHUFFLE โ reshuffles the board when you need a way out โข SKIP โ wipes whatever's left of the target for an instant clear THREE BOARDS, ONE CLOCK โข EASY โ a 3ร3 board with gentle targets and a forgiving timer โข MEDIUM โ a 4ร4 board with bigger numbers and tighter margins โข HARD โ a 5ร5 board where every tap and every second counts BUILT FOR QUICK RUNS โข Rounds last seconds, runs last minutes โ pure score-chasing arcade โข Speed bonuses and streak bonuses reward fast, flawless play โข Game Center leaderboards for every difficulty โข Achievements for combos, streaks, and flawless runs โข High scores sync with Game Center, so a reinstall never costs you your best โข Fully playable offline โข A calm, neon-dark look with an original adaptive soundtrack โ focus, not chaos FREE TO PLAY Till Zero is free and supported by ads. A single optional purchase removes them forever. No moves to count. No lives to wait for. Just you, the numbers, and a clock that never blinks. REACH ZERO. Privacy Policy: https://lukasz-rausz-geesoft.github.io/TillZero/privacy-policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://lukasz-rausz-geesoft.github.io/TillZero/
Odd One
A minimalist brain-training puzzle game where players identify the single tile that breaks a pattern in a grid. It offers four distinct game modes, including classic, arcade, endless, and daily challenges, all designed for calm, logical play.
- Four distinct game modes
- Minimalist brain-training puzzles
- Handcrafted and generated levels
- No timer or time-based challenges
- Color-assist mode for color-blind players
- Light and dark mode
- Calm piano soundtrack
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A grid of symbols. One breaks the hidden rule - colour, shape, size, count or pattern. Tap exactly that one. That is all you need to know, and that is exactly why it is so much fun. FOUR MODES - Classic: 300 levels, no clock, pure logic. From level 151 the Extreme World adds patterns as a fifth dimension. - Arcade: a 60-second time bank. Right answers earn time, wrong ones cost it. - Endless: three lives, no time pressure. Four tiers up to Extreme. - Daily: five puzzles a day, the same for everyone worldwide. One chance. ON YOUR HOME SCREEN - A widget with your daily status and a playable mini puzzle - in three sizes FAIR AND CALM - Completely free: no ads, no tracking, no account, no paywall - A voluntary tip jar is the only source of income - it unlocks nothing - Calm piano music, light and dark design, alternate app icons - Colour assist for colour-blind players, full VoiceOver support - Game Center: leaderboards and 13 achievements, iCloud sync - Fully localised (EN, DE, FR, IT, ES) Odd One is the first game from earls studio, Munich.
Screenshots
Verdict
The clearest difference is in-app purchases: Odd One at none against Till Zero's 1. Odd One also leads on ads (none vs shown) and update cadence (weekly vs every 5 weeks). On price and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Till Zero sells 1 one-off in-app purchase. Odd One asks for nothing beyond the download.
Till Zero ships an update every 5 weeks, Odd One weekly. The most recent releases landed on September 24, 2026 and October 10, 2026 respectively.
| Parameter | Till Zero | Odd One |
|---|---|---|
| Price | Free | Free |
| Positive reviews | โ | 91.7% of reviews |
| Update frequency | Every 5 weeks | Weekly โ better |
| Ads | Yes | No โ better |
| In-app purchases | Yes | No โ better |
| Monetization | โ | Free |
| Devices | iPhone | iPhone, iPad โ better |
| Requires iOS | 26.0 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 11 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Lukasz Rausz | Lucas Hesseldieck |
In-app purchases
Till Zero
- Remove Ads$2.99
Odd One
No in-app purchases









