# Brain vs Series Math Solver by CS

The clearest difference is ads: Brain at none against Series Math Solver by CS's shown. Brain also leads on iOS requirement (13.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Brain sells 2 in-app purchases, starting at $2.99 per month and Series Math Solver by CS sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Brain | Series Math Solver by CS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Daily | — |
| Size | 15 MB | 12 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YATB LLC](https://appshunter.io/developer/1621951581) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Brain

[App page](https://appshunter.io/ios/app/brain-mental-math-practice/id6472009003)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Problem Set Generator Pro | $2.99 | per month |
| Math Problem Set Generator Pro | $19.99 | per year |


### Series Math Solver by CS

[App page](https://appshunter.io/ios/app/series-math-solver-by-cs/id6775148098)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is Brain free?

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

### Is Series Math Solver by CS free?

Series Math Solver by CS is free to download, with in-app purchases available.

### Do Brain or Series Math Solver by CS have ads?

Series Math Solver by CS shows ads; Brain does not.

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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.*