# BrainTrainingCalculator vs Brain Forest

The clearest difference is in-app purchases: BrainTrainingCalculator at none against Brain Forest's 2. Brain Forest's advantage is iOS requirement (12.0 vs 15.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Brain Forest sells 2 in-app purchases, starting at $3.00 per month. BrainTrainingCalculator asks for nothing beyond the download.

BrainTrainingCalculator ships an update every 9 days, Brain Forest weekly. The most recent releases landed on October 26, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | BrainTrainingCalculator | Brain Forest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 9 days | **Weekly** |
| Size | 5 MB | 57 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ryo muranaka](https://appshunter.io/developer/1606480078) | [SHOGO YOSHIDA](https://appshunter.io/developer/1713295271) |

## What reviewers say

### BrainTrainingCalculator

[App page](https://appshunter.io/ios/app/braintrainingcalculatorsimple/id1644516996)

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

**In-app purchases:** none


### Brain Forest

[App page](https://appshunter.io/ios/app/brain-forest-brain-game/id6651830280)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Brain Forest Premium (Monthly) | $3.00 | per month |
| Brain Forest Premium (Annual) | $18.00 | per year |


## Frequently asked questions

### Is BrainTrainingCalculator free?

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

### Is Brain Forest free?

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

### Do BrainTrainingCalculator or Brain Forest have ads?

Both BrainTrainingCalculator and Brain Forest show ads.

### Which is updated more often, BrainTrainingCalculator or Brain Forest?

BrainTrainingCalculator ships an update every 9 days, and Brain Forest weekly. Most recently, BrainTrainingCalculator was updated on October 26, 2026 and Brain Forest on October 9, 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.*