# Stack 101 Tower vs IQ Test & Aptitude Brain Games

The clearest difference is in-app purchases: Stack 101 Tower at none against IQ Test & Aptitude Brain Games's 1. Stack 101 Tower also leads on update cadence (every 5 days vs every 6 months) and iOS requirement (12.0 vs 15.1). IQ Test & Aptitude Brain Games's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. IQ Test & Aptitude Brain Games sells 1 in-app purchase, starting at $2.99 per month. Stack 101 Tower asks for nothing beyond the download.

Stack 101 Tower ships an update every 5 days, IQ Test & Aptitude Brain Games every 6 months. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Stack 101 Tower | IQ Test & Aptitude Brain Games |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 6 months |
| Size | 54 MB | 46 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZHENG YU-XIANG](https://appshunter.io/developer/1863257025) | [Onur Yuksekkaya](https://appshunter.io/developer/1865143108) |

## What reviewers say

### Stack 101 Tower

[App page](https://appshunter.io/ios/app/stack-101-tower/id6759484448)

**Features:** macOS Compatibility

**In-app purchases:** none


### IQ Test & Aptitude Brain Games

[App page](https://appshunter.io/ios/app/iq-test-and-aptitude-brain-games/id6759832082)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |


## Frequently asked questions

### Is Stack 101 Tower free?

Stack 101 Tower is free to download, with no in-app purchases.

### Is IQ Test & Aptitude Brain Games free?

IQ Test & Aptitude Brain Games is free to download, with in-app purchases available.

### Do Stack 101 Tower or IQ Test & Aptitude Brain Games have ads?

Stack 101 Tower shows ads; IQ Test & Aptitude Brain Games does not.

### Which is updated more often, Stack 101 Tower or IQ Test & Aptitude Brain Games?

Stack 101 Tower ships an update every 5 days, and IQ Test & Aptitude Brain Games every 6 months. Most recently, Stack 101 Tower was updated on October 2, 2026 and IQ Test & Aptitude Brain Games on October 5, 2026.

---

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