# Word Master Stack vs Lumath

The clearest difference is in-app purchases: Lumath at none against Word Master Stack's 2. Lumath also leads on update cadence (every 3 weeks vs every 4 months). Word Master Stack's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

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

Word Master Stack ships an update every 4 months, Lumath every 3 weeks. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Word Master Stack | Lumath |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (166 ratings)](https://appshunter.io/ios/app/word-master-stack/id1634958856/reviews)** | — |
| Number of ratings | **166** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 74 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luis Gualandi](https://appshunter.io/developer/979597989) | [MJK APPS SRL](https://appshunter.io/developer/1479397424) |

## 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 |


### Lumath

[App page](https://appshunter.io/ios/app/lumath/id6782058709)

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

**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 Lumath free?

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

### Do Word Master Stack or Lumath have ads?

Both Word Master Stack and Lumath show ads.

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

Word Master Stack ships an update every 4 months, and Lumath every 3 weeks. Most recently, Word Master Stack was updated on September 23, 2026 and Lumath on September 11, 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.*