Eco Mi vs Erwin
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Eco Mi
Test your memory by watching and repeating color sequences. Features five unique game modes, including classic, timed, and reverse challenges. Compete on leaderboards, unlock achievements, and track your progress with a stats dashboard.
- Five distinct game modes
- High score leaderboard
- 16 unlockable achievements
- Progress tracking dashboard
- Customizable color themes and sound packs
- Haptic feedback
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Test your memory with Eco Mi - a modern take on the classic Simon game! Watch the color sequence, then repeat it back. Each round adds one more step. How far can you go? FIVE GAME MODES • Classic — the original Simon experience • Daily Challenge — same sequence for everyone, build your streak • Timed — 60 seconds, how many sequences can you complete? • Reverse — repeat the sequence backwards • Chaos — buttons shuffle positions between rounds COMPETE & TRACK • Arcade-style high score leaderboard with retro initial entry • 16 achievements to unlock as you improve • Stats dashboard tracking your progress over time • Share your score as a branded card • Daily reminders to protect your streak CUSTOMIZE • 4 color themes — 1 included free, 3 unlockable • 4 sound packs with unique tones — 1 included free, 3 unlockable • Smooth animations and satisfying haptic feedback PLAY IN YOUR LANGUAGE • English, Spanish, and Portuguese Free to play. No account required. Just tap and play!
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.
Screenshots
Verdict
The clearest difference is price: Eco Mi at Free against Erwin's $4.99. Eco Mi also leads on iOS requirement (15.1 vs 26.0). Erwin's advantage is in-app purchases (none vs 7) and ads (none vs shown). On update cadence and device support 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
Eco Mi is free to download; Erwin costs $4.99 up front. Eco Mi sells 7 one-off in-app purchases. Erwin asks for nothing beyond the download.
Eco Mi ships an update every 9 days, Erwin every 8 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Eco Mi | Erwin |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 9 days | Every 8 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 63 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Frank Calise | Tamas Bartal |
In-app purchases
Eco Mi
- Retro Theme$0.99
- Neon Theme$0.99
- Pastel Theme$0.99
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- Retro Sound Pack$0.99
- Buzzy Sound Pack$0.99
- Mellow Sound Pack$0.99
- Remove Ads$2.99
Erwin
No in-app purchases









