# Stack 101 Tower vs Compound Boom

Stack 101 Tower and Compound Boom are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Stack 101 Tower ships an update every 5 days, Compound Boom every 4 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Stack 101 Tower | Compound Boom |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | **Every 4 days** |
| Size | 54 MB | 87 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZHENG YU-XIANG](https://appshunter.io/developer/1863257025) | [桂芝 李](https://appshunter.io/developer/1860795345) |

## What reviewers say

### Stack 101 Tower

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Compound Boom

[App page](https://appshunter.io/ios/app/compound-boom/id6760965686)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stack 101 Tower free?

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

### Is Compound Boom free?

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

### Do Stack 101 Tower or Compound Boom have ads?

Both Stack 101 Tower and Compound Boom show ads.

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

Stack 101 Tower ships an update every 5 days, and Compound Boom every 4 days. Most recently, Stack 101 Tower was updated on October 2, 2026 and Compound Boom on October 7, 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.*