Comparison

Erwin vs Harbor Chaos

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Harbor Chaos

Read full description

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

Erwin4 screens
Harbor Chaos4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences ยท 5 level
Erwin versus Harbor Chaos: the parameters behind the verdict, then further details
ParameterErwinHarbor Chaos
Price$4.99Free โ€” better
Positive reviews0.0% of reviewsโ€”
Update frequencyEvery 8 days โ€” betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidโ€”
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS26.015.1 โ€” better
Further details โ€” not scored
Size43 MB40 MB
Age rating+44+
DeveloperTamas BartalAlexander Lemken

In-app purchases

None

Erwin

No in-app purchases

None

Harbor Chaos

No in-app purchases

Questions

Is Erwin free?
Erwin costs $4.99, with no in-app purchases.
Is Harbor Chaos free?
Harbor Chaos is free to download, with no in-app purchases.
Do Erwin or Harbor Chaos have ads?
Neither Erwin nor Harbor Chaos shows ads.
Which is updated more often, Erwin or Harbor Chaos?
Erwin ships an update every 8 days, and Harbor Chaos every 4 months. Most recently, Erwin was updated on October 31, 2026 and Harbor Chaos on November 5, 2026.

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