Erwin vs Odd One
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Erwin
Experience a unique 3D sliding puzzle on a cube's six faces. Merge tiles, rotate the cube, and discover quantum effects like superposition and entanglement. Play with friends in multiplayer mode.
- 3D cube sliding puzzle
- Tile merging and scoring
- Quantum effects (superposition, entanglement)
- Cube rotation for multiple faces
- Local multiplayer via Game Center
- Universal app purchase
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Erwin is a sliding puzzle played on the six faces of a cube, a unique 3D experience with spatial audio and holographic depth effects. Swipe to slide and merge tiles, or swipe the background to rotate the cube and work the other sides. Tiles have a value that doubles when they merge, and each merge adds to your score. Play long enough and quantum effects begin to appear: some tiles are in superposition, alternating between two values, some entangled and move together, and some even teleport. Play together with friends via Game Center Multiplayer: take turns on a shared cube, watch each other's moves in real time, and climb the cooperative leaderboard. Universal purchase with Family sharing: pay once, and play Erwin on iPhone, iPad, and Mac, with up to six family members. Erwin respects your privacy and your wallet. This is an app I wanted for myself without compromise or dark patterns: pay once and it's yours, on all your devices, with no ads, no nagging in-app purchases, no tracking, no profiling.
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 review sentiment: Odd One at 92% against Erwin's 0%. Odd One also leads on price (Free vs $4.99) and iOS requirement (17.0 vs 26.0). Erwin's advantage is chart position (#198 vs unranked). On update cadence, ads, in-app purchases 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
Odd One is free to download; Erwin costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Erwin ships an update every 8 days, Odd One weekly. The most recent releases landed on September 20, 2026 and September 23, 2026 respectively.
| Parameter | Erwin | Odd One |
|---|---|---|
| Price | $4.99 | Free โ better |
| Positive reviews | 0.0% of reviews | 91.7% of reviews โ better |
| Update frequency | Every 8 days | Weekly โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free โ better |
| Best chart rank | #198 โ better | โ |
| Devices | iPhone, iPad, Mac โ better | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 โ better |
| Further details โ not scored | ||
| Size | 43 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Tamas Bartal | Lucas Hesseldieck |
Customer experience
Erwin
Odd One
In-app purchases
Erwin
No in-app purchases
Odd One
No in-app purchases









