# Brain Tree School vs Fesormex

The clearest difference is ads: Brain Tree School at none against Fesormex's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Brain Tree School ships an update every 2 months, Fesormex every 5 months. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Brain Tree School | Fesormex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 5 months |
| Size | 34 MB | 80 MB |
| Requires iOS | **14** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SCHOOL IBOX S.A.S. DE C.V.](https://appshunter.io/developer/1271228289) | [Federación Mexicana de Otorrinolaringología y CCC, A.C.](https://appshunter.io/developer/1656753842) |

## What reviewers say

### Brain Tree School

[App page](https://appshunter.io/ios/app/brain-tree-school/id1476991583)

**Features:** macOS Compatibility

**In-app purchases:** none


### Fesormex

[App page](https://appshunter.io/ios/app/fesormex/id6444774238)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brain Tree School free?

Brain Tree School is free to download, with no in-app purchases.

### Is Fesormex free?

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

### Do Brain Tree School or Fesormex have ads?

Fesormex shows ads; Brain Tree School does not.

### Which is updated more often, Brain Tree School or Fesormex?

Brain Tree School ships an update every 2 months, and Fesormex every 5 months. Most recently, Brain Tree School was updated on October 11, 2026 and Fesormex on October 16, 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.*