# Word Master Stack vs Letterz Solo

The clearest difference is in-app purchases: Letterz Solo at none against Word Master Stack's 2. Letterz Solo also leads on ads (none vs shown) and rating (5.0 vs 4.7). Word Master Stack's advantage is ratings volume (166 vs 7). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Word Master Stack sells 2 in-app purchases, starting at $0.99 per month. Letterz Solo asks for nothing beyond the download.

Letterz Solo holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Word Master Stack has 166 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 71% of Word Master Stack's written reviews are positive against 83% of Letterz Solo's.

Word Master Stack ships an update every 4 months, Letterz Solo every 5 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Word Master Stack | Letterz Solo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (166 ratings)](https://appshunter.io/ios/app/word-master-stack/id1634958856/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/letterz-solo/id6447789690/reviews)** |
| Number of ratings | **166** | 7 |
| Positive reviews | 71.4% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 77 MB | 14 MB |
| Requires iOS | **12.0** | 12.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luis Gualandi](https://appshunter.io/developer/979597989) | [Jeff Rush](https://appshunter.io/developer/643289030) |

## What reviewers say

### Word Master Stack

[App page](https://appshunter.io/ios/app/word-master-stack/id1634958856)

This is a word-building board game where players create words by placing letter tiles. Letters can be stacked on top of existing tiles, with higher stacks yielding more points. It offers offline play, multiple languages, and detailed statistics.

**Highlights:** Stack letters on top of existing tiles, Scoring based on stack height, Offline mode with 4 difficulty levels, Pass and Play mode, Built-in word definitions, Multiple languages supported, Detailed statistics

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Subscription Month | $0.99 | per month |
| Pro Subscription Year | $5.99 | per year |


### Letterz Solo

[App page](https://appshunter.io/ios/app/letterz-solo/id6447789690)

Engage in a challenging word game that tests your vocabulary and strategic thinking. Compete against your device on various difficulty levels, from easy to hard. Perfect for quick mental workouts.

**Highlights:** Challenging word gameplay, Multiple difficulty levels (easy, normal, hard), Single-player against device, Tests vocabulary and strategy, Suitable for iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Word Master Stack free?

Word Master Stack is free to download, with in-app purchases available.

### Is Letterz Solo free?

Letterz Solo is free to download, with no in-app purchases.

### Which has better reviews, Word Master Stack or Letterz Solo?

Letterz Solo is rated higher. Word Master Stack averages 4.7 out of 5 from 166 ratings, while Letterz Solo averages 5.0 from 7 ratings.

### Do Word Master Stack or Letterz Solo have ads?

Word Master Stack shows ads; Letterz Solo does not.

### Which is updated more often, Word Master Stack or Letterz Solo?

Word Master Stack ships an update every 4 months, and Letterz Solo every 5 weeks. Most recently, Word Master Stack was updated on October 17, 2026 and Letterz Solo on October 16, 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.*