Erwin vs VoiceGammon
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.
VoiceGammon
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VoiceGammon brings Portes โ one of the three traditional Greek backgammon games โ to everyone, with particular care for VoiceOver accessibility. Play Portes: โข Against the computer, โข with a second player on the same device, โข online with a friend or random opponent through Game Center. The board is fully explorable with VoiceOver. Every point announces its area, checker color, and checker count, while available moves are offered as accessible actions. The magic tap reports the match status, dice, bar, borne-off checkers, and useful positional information. Spatial sounds help you follow movement around the board through headphones and the device speakers. VoiceGammon also includes automatic game saving, undo before ending a turn, personal statistics, and Greek or English interfaces. There are no ads or in-app purchases.
Screenshots
Verdict
The clearest difference is update cadence: VoiceGammon at every 4 days against Erwin's every 8 days. VoiceGammon also leads on price ($2.99 vs $4.99) and iOS requirement (17.6 vs 26.0). 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
Erwin costs $4.99 and VoiceGammon $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Erwin ships an update every 8 days, VoiceGammon every 4 days. Both last shipped on October 20, 2026.
| Parameter | Erwin | VoiceGammon |
|---|---|---|
| Price | $4.99 | $2.99 โ better |
| Positive reviews | 0.0% of reviews | โ |
| Update frequency | Every 8 days | Every 4 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | โ |
| Devices | iPhone, iPad, Mac โ better | iPhone, iPad |
| Requires iOS | 26.0 | 17.6 โ better |
| Further details โ not scored | ||
| Size | 43 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Tamas Bartal | Stelios Platsis |
In-app purchases
Erwin
No in-app purchases
VoiceGammon
No in-app purchases









