# 传话消息 vs Linear Algebra

The clearest difference is in-app purchases: Linear Algebra at none against 传话消息's 6. 传话消息's advantage is iOS requirement (9.0 vs 17.6). On price there is nothing between them.

Both are free to download. 传话消息 sells 6 one-off in-app purchases. Linear Algebra asks for nothing beyond the download.

## The numbers

| Metric | 传话消息 | Linear Algebra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 5 weeks |
| Size | 34 MB | 73 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [志超 尹](https://appshunter.io/developer/1516211321) | [光浩 李](https://appshunter.io/developer/1576352133) |

## What reviewers say

### 传话消息

[App page](https://appshunter.io/ios/app/id6449961484)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 4个传话币 | $0.99 | one-time |
| 17个传话币 | $1.99 | one-time |
| 99个传话币 | $9.99 | one-time |
| 256个传话币 | $24.99 | one-time |
| 432个传话币 | $39.99 | one-time |
| 999个传话币 | $89.99 | one-time |


### Linear Algebra

[App page](https://appshunter.io/ios/app/linear-algebra-matrix-solver/id6766080565)

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

**In-app purchases:** none


## Frequently asked questions

### Is 传话消息 free?

传话消息 is free to download, with in-app purchases available.

### Is Linear Algebra free?

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

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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.*