# YunifyDailyBrain vs Stack 101 Tower

The clearest difference is in-app purchases: Stack 101 Tower at none against YunifyDailyBrain's 1. Stack 101 Tower also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (12.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. YunifyDailyBrain sells 1 one-off in-app purchase. Stack 101 Tower asks for nothing beyond the download.

YunifyDailyBrain ships an update every 2 weeks, Stack 101 Tower every 5 days. The most recent releases landed on August 1, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | YunifyDailyBrain | Stack 101 Tower |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 49 MB | 54 MB |
| Requires iOS | 26.2 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yunqin Chen](https://appshunter.io/developer/1808547124) | [ZHENG YU-XIANG](https://appshunter.io/developer/1863257025) |

## What reviewers say

### YunifyDailyBrain

[App page](https://appshunter.io/ios/app/yunifydailybrain/id6759256398)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Stack 101 Tower

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is YunifyDailyBrain free?

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

### Is Stack 101 Tower free?

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

### Do YunifyDailyBrain or Stack 101 Tower have ads?

Both YunifyDailyBrain and Stack 101 Tower show ads.

### Which is updated more often, YunifyDailyBrain or Stack 101 Tower?

YunifyDailyBrain ships an update every 2 weeks, and Stack 101 Tower every 5 days. Most recently, YunifyDailyBrain was updated on August 1, 2026 and Stack 101 Tower on September 14, 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.*