# GM ChessPrep vs Linear Algebra

The clearest difference is in-app purchases: GM ChessPrep at none against Linear Algebra's 1. GM ChessPrep also leads on iOS requirement (15.0 vs 18.6). Linear Algebra's advantage is update cadence (every 2 days vs every 42 months). On price, ads and device support there is nothing between them.

Both are free to download. Linear Algebra sells 1 one-off in-app purchase. GM ChessPrep asks for nothing beyond the download.

GM ChessPrep ships an update every 42 months, Linear Algebra every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | GM ChessPrep | Linear Algebra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 2 days** |
| Size | 3 MB | 21 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 12+ | 4+ |
| Developer | [GMCHESSPREP LLC](https://appshunter.io/developer/1664061168) | [Mohammed Yussif](https://appshunter.io/developer/1873447146) |

## What reviewers say

### GM ChessPrep

[App page](https://appshunter.io/ios/app/gm-chessprep/id1664061166)

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

**In-app purchases:** none


### Linear Algebra

[App page](https://appshunter.io/ios/app/linear-algebra-matrixviz/id6791628348)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MatrixViz Pro Lifetime | $44.99 | one-time |


## Frequently asked questions

### Is GM ChessPrep free?

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

### Is Linear Algebra free?

Linear Algebra is free to download, with in-app purchases available.

### Do GM ChessPrep or Linear Algebra have ads?

Neither GM ChessPrep nor Linear Algebra shows ads.

### Which is updated more often, GM ChessPrep or Linear Algebra?

GM ChessPrep ships an update every 42 months, and Linear Algebra every 2 days. Most recently, GM ChessPrep was updated on October 25, 2026 and Linear Algebra 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.*