# ZenAI vs Linear Algebra

The clearest difference is device support: Linear Algebra at 3 against ZenAI's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ZenAI sells 3 one-off in-app purchases and Linear Algebra sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ZenAI | Linear Algebra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Size | 6 MB | 21 MB |
| Requires iOS | **18.5** | 18.6 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ZenStudy Technologies - FZCO](https://appshunter.io/developer/1782979211) | [Mohammed Yussif](https://appshunter.io/developer/1873447146) |

## What reviewers say

### ZenAI

[App page](https://appshunter.io/ios/app/zenai-study-smarter/id6747843527)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Credit | $0.99 | one-time |
| 5 Credits | $3.99 | one-time |
| 10 Credits | $5.99 | one-time |


### 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 ZenAI free?

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

### Is Linear Algebra free?

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

### Do ZenAI or Linear Algebra have ads?

Neither ZenAI nor Linear Algebra shows ads.

### Which is updated more often, ZenAI or Linear Algebra?

ZenAI ships an update every 2 days, and Linear Algebra every 2 days. Most recently, ZenAI was updated on October 24, 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.*