Erwin vs Harbor Chaos
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.
Harbor Chaos
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Harbor Chaos is a sliding-block puzzle set in a calm, low-poly harbor. The basin is gridlocked with ships, and your red boat is stuck. Slide the other vessels out of the way, open a lane, and guide the red ship to the open sea. Every ship moves only along its own axis โ boats facing across the water slide left and right, boats facing along it slide up and down. Nothing rotates, nothing falls, nothing is placed. It is pure, calm spatial logic: read the jam, find the order of moves, and untangle it. 100 LEVELS, STEADILY HARDER A difficulty curve that starts gentle and keeps climbing โ from a two-move intro to deep eighteen-move tangles. Every single level is verified by a solver to have a clean, fair solution, so you are never stuck on something broken. EARN YOUR STARS Each level has a known best solution. Solve it in the fewest moves for three stars, stay close for two. Replay any level to chase a perfect run. BUILT TO BE CALM - A hand-painted low-poly harbor and a clean, uncluttered interface - No timers, no pressure โ think as long as you like - Tap Reset to restart a level instantly RESPECTS YOU - Free, with no ads and no in-app purchases - Plays fully offline - No accounts, no tracking, no data collected Whether you want a quick brain teaser or a long, quiet untangle, Harbor Chaos is waiting at the docks.
Screenshots
Verdict
The clearest difference is price: Harbor Chaos at Free against Erwin's $4.99. Harbor Chaos also leads on iOS requirement (15.1 vs 26.0). Erwin's advantage is update cadence (every 8 days vs every 4 months). On 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
Harbor Chaos 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, Harbor Chaos every 4 months. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.
| Parameter | Erwin | Harbor Chaos |
|---|---|---|
| Price | $4.99 | Free โ better |
| Positive reviews | 0.0% of reviews | โ |
| Update frequency | Every 8 days โ better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | โ |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 15.1 โ better |
| Further details โ not scored | ||
| Size | 43 MB | 40 MB |
| Age rating | +4 | 4+ |
| Developer | Tamas Bartal | Alexander Lemken |
In-app purchases
Erwin
No in-app purchases
Harbor Chaos
No in-app purchases









