# Erwin vs Word Tack

The clearest difference is price: Word Tack at Free against Erwin's $4.99. Word Tack also leads on iOS requirement (17.0 vs 26.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Word Tack 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, Word Tack every 5 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Erwin | Word Tack |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/word-tack/id6776380313/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 5 days** |
| Monetization | Paid | **Free** |
| Size | 43 MB | 7 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tamas Bartal](https://appshunter.io/developer/896478676) | [Heath Behrens](https://appshunter.io/developer/1892742916) |

## 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


### Word Tack

[App page](https://appshunter.io/ios/app/word-tack/id6776380313)

A relaxing word puzzle game where you sort 40 words into 8 themed groups. Swap tiles to match words, and enjoy a papercraft aesthetic with no timers or lives. Earn in-game currency to customize your experience.

**Highlights:** Word sorting puzzles, Papercraft aesthetic, No timers or lives, Daily puzzles, Customization options, Offline play, VoiceOver support

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

**In-app purchases:** none


## Frequently asked questions

### Is Erwin free?

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

### Is Word Tack free?

Word Tack is free to download, with no in-app purchases.

### Do Erwin or Word Tack have ads?

Neither Erwin nor Word Tack shows ads.

### Which is updated more often, Erwin or Word Tack?

Erwin ships an update every 8 days, and Word Tack every 5 days. Most recently, Erwin was updated on October 24, 2026 and Word Tack on October 29, 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.*