Comparison

Till Zero vs Odd One

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

Head to head
About

Till Zero

Features
Read full description

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: โ€ข TIME FREEZE โ€” stops the clock cold for a few precious seconds โ€ข BOMB โ€” comes with a lit fuse; spend it in time or take the penalty โ€ข POISON โ€” pays bonus points, then drains your clock while the toxin lasts โ€ข CHAIN โ€” your next move must be an adjacent tile, so think fast โ€ข LINKED โ€” comes in pairs; tap one and you're committed to its partner โ€ข LOCKED โ€” sealed shut until you've cleared enough tiles this round โ€ข NEGATIVE โ€” pushes the target back up instead of down โ€ข RANDOM โ€” a hidden value revealed only when you tap it, with a points bonus โ€ข DECAY โ€” its value rots away on a timer; grab it early or grab it cheap โ€ข SWAP โ€” re-rolls the tiles around it into brand-new values โ€ข SHUFFLE โ€” reshuffles the board when you need a way out โ€ข SKIP โ€” wipes whatever's left of the target for an instant clear THREE BOARDS, ONE CLOCK โ€ข EASY โ€” a 3ร—3 board with gentle targets and a forgiving timer โ€ข MEDIUM โ€” a 4ร—4 board with bigger numbers and tighter margins โ€ข HARD โ€” a 5ร—5 board where every tap and every second counts BUILT FOR QUICK RUNS โ€ข Rounds last seconds, runs last minutes โ€” pure score-chasing arcade โ€ข Speed bonuses and streak bonuses reward fast, flawless play โ€ข Game Center leaderboards for every difficulty โ€ข Achievements for combos, streaks, and flawless runs โ€ข High scores sync with Game Center, so a reinstall never costs you your best โ€ข Fully playable offline โ€ข 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/

About

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.

Highlights
  • 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
Features
Read full description

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

Till Zero4 screens
Odd One4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Till Zero sells 1 one-off in-app purchase. Odd One asks for nothing beyond the download.

UpkeepUpdate frequency

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.

Scorecard4 real differences ยท 4 level
Till Zero versus Odd One: the parameters behind the verdict, then further details
ParameterTill ZeroOdd One
PriceFreeFree
Positive reviewsโ€”91.7% of reviews
Update frequencyEvery 5 weeksWeekly โ€” better
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
Monetizationโ€”Free
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS26.017.0 โ€” better
Further details โ€” not scored
Size11 MB23 MB
Age rating4+4+
DeveloperLukasz RauszLucas Hesseldieck

In-app purchases

1 purchases

Till Zero

One-time1
  • Remove Ads$2.99
None

Odd One

No in-app purchases

Questions

Is Till Zero free?
Till Zero is free to download, with in-app purchases available.
Is Odd One free?
Odd One is free to download, with no in-app purchases.
Do Till Zero or Odd One have ads?
Till Zero shows ads; Odd One does not.
Which is updated more often, Till Zero or Odd One?
Till Zero ships an update every 5 weeks, and Odd One weekly. Most recently, Till Zero was updated on September 24, 2026 and Odd One on October 10, 2026.

Other comparisons