# Erwin vs Final Fortress

The clearest difference is price: Final Fortress at Free against Erwin's $4.99. Final Fortress also leads on iOS requirement (17.0 vs 26.0). Erwin's advantage is in-app purchases (none vs 4). On update cadence, ads and device support there is nothing between them.

Final Fortress is free to download; Erwin costs $4.99 up front. Final Fortress sells 4 one-off in-app purchases. Erwin asks for nothing beyond the download.

Erwin ships an update every 8 days, Final Fortress weekly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Erwin | Final Fortress |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/final-fortress/id6802020790/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 43 MB | 5 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Tamas Bartal](https://appshunter.io/developer/896478676) | [Dmitrii Dark](https://appshunter.io/developer/1870629778) |

## What reviewers say

### Erwin

[App page](https://appshunter.io/ios/app/erwin-a-quantum-puzzle/id6761667185)

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:** Game Controller support, Vision Pro support

**In-app purchases:** none


### Final Fortress

[App page](https://appshunter.io/ios/app/final-fortress/id6802020790)

Engage in a unique match-3 puzzle experience set within an old terminal interface. Complete daily tasks by matching tiles to gather supplies, repair your last fortress, and uncover a compelling story. Enjoy a quiet, atmospheric game with dynamic sound and AI-driven challenges.

**Highlights:** Match-3 puzzle gameplay, Fortress management and repair, Story-driven log entries, AI-driven challenge mode, Dynamic, synthesized soundtrack, View-only player station board

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Amber Phosphor | $0.99 | one-time |
| Emerald Phosphor | $0.99 | one-time |
| The Long Dark | $0.99 | one-time |
| Memory Chip | $2.99 | one-time |


## Frequently asked questions

### Is Erwin free?

Erwin costs $4.99, with no in-app purchases.

### Is Final Fortress free?

Final Fortress is free to download, with in-app purchases available.

### Do Erwin or Final Fortress have ads?

Neither Erwin nor Final Fortress shows ads.

### Which is updated more often, Erwin or Final Fortress?

Erwin ships an update every 8 days, and Final Fortress weekly. Most recently, Erwin was updated on October 24, 2026 and Final Fortress on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*