# Yarn Untangle vs Boom Stack Smash

The clearest difference is update cadence: Yarn Untangle at every 4 days against Boom Stack Smash's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Yarn Untangle sells 1 one-off in-app purchase and Boom Stack Smash sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Yarn Untangle ships an update every 4 days, Boom Stack Smash every 9 days. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Yarn Untangle | Boom Stack Smash |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 9 days |
| Size | 155 MB | 175 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Xuan](https://appshunter.io/developer/1468325998) | [Nestengineering](https://appshunter.io/developer/1826499232) |

## What reviewers say

### Yarn Untangle

[App page](https://appshunter.io/ios/app/yarn-untangle-logic-puzzle/id6781111626)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vip Membership | $4.99 | one-time |


### Boom Stack Smash

[App page](https://appshunter.io/ios/app/boom-stack-smash/id6802006926)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Handful of Coins | $1.99 | one-time |
| Ad-Free Pass | $3.99 | one-time |
| Bag of Coins | $4.99 | one-time |
| Chest of Coins | $6.99 | one-time |
| Remove Ads | $12.99 | one-time |


## Frequently asked questions

### Is Yarn Untangle free?

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

### Is Boom Stack Smash free?

Boom Stack Smash is free to download, with in-app purchases available.

### Do Yarn Untangle or Boom Stack Smash have ads?

Both Yarn Untangle and Boom Stack Smash show ads.

### Which is updated more often, Yarn Untangle or Boom Stack Smash?

Yarn Untangle ships an update every 4 days, and Boom Stack Smash every 9 days. Most recently, Yarn Untangle was updated on October 18, 2026 and Boom Stack Smash on October 15, 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.*