# Fibonacci Numbers vs BrainBro

The clearest difference is in-app purchases: BrainBro at none against Fibonacci Numbers's 1. Fibonacci Numbers's advantage is update cadence (every 10 days vs every 3 weeks) and iOS requirement (15.6 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Fibonacci Numbers sells 1 one-off in-app purchase. BrainBro asks for nothing beyond the download.

Fibonacci Numbers ships an update every 10 days, BrainBro every 3 weeks. The most recent releases landed on September 20, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Fibonacci Numbers | BrainBro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 24 MB | 19 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [海军 王](https://appshunter.io/developer/1756634009) | [Peter Eriksson](https://appshunter.io/developer/1792724015) |

## What reviewers say

### Fibonacci Numbers

[App page](https://appshunter.io/ios/app/fibonacci-numbers/id6566185190)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2000Coins | $0.99 | one-time |


### BrainBro

[App page](https://appshunter.io/ios/app/brainbro/id6741045927)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fibonacci Numbers free?

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

### Is BrainBro free?

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

### Do Fibonacci Numbers or BrainBro have ads?

Neither Fibonacci Numbers nor BrainBro shows ads.

### Which is updated more often, Fibonacci Numbers or BrainBro?

Fibonacci Numbers ships an update every 10 days, and BrainBro every 3 weeks. Most recently, Fibonacci Numbers was updated on September 20, 2026 and BrainBro on October 1, 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.*