# One Minute Brain Builder vs A Rotating Fan

The clearest difference is iOS requirement: A Rotating Fan at 9.0 against One Minute Brain Builder's 11.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

One Minute Brain Builder ships an update every 3 months, A Rotating Fan every 2 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | One Minute Brain Builder | A Rotating Fan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/one-minute-brain-builder/id1463055531/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 88 MB | 38 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [登理 郝](https://appshunter.io/developer/910536182) | [其跃 吴](https://appshunter.io/developer/660989470) |

## What reviewers say

### One Minute Brain Builder

[App page](https://appshunter.io/ios/app/one-minute-brain-builder/id1463055531)

Engage in a variety of brain-training exercises designed to improve logic, memory, speed, and concentration. With 16 different game types and all levels accessible for free, it offers a fun and relaxing way to keep your mind sharp. Play offline anytime, anywhere.

**Highlights:** 32 logic, memory, speed, visual, concentration, reaction, and math tests, 16 kinds of games, All levels are open and free, Easy and fun gameplay for all ages, Offline play available, Simple game rules

**Features:** macOS Compatibility

**In-app purchases:** none


### A Rotating Fan

[App page](https://appshunter.io/ios/app/a-rotating-fan/id1523989616)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is One Minute Brain Builder free?

One Minute Brain Builder is free to download, with no in-app purchases.

### Is A Rotating Fan free?

A Rotating Fan is free to download, with no in-app purchases.

### Do One Minute Brain Builder or A Rotating Fan have ads?

Both One Minute Brain Builder and A Rotating Fan show ads.

### Which is updated more often, One Minute Brain Builder or A Rotating Fan?

One Minute Brain Builder ships an update every 3 months, and A Rotating Fan every 2 months. Most recently, One Minute Brain Builder was updated on November 3, 2026 and A Rotating Fan on November 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*