# Loop vs Stack Circuit

The clearest difference is in-app purchases: Stack Circuit at none against Loop's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Loop sells 4 one-off in-app purchases. Stack Circuit asks for nothing beyond the download.

## The numbers

| Metric | Loop | Stack Circuit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (8 ratings)](https://appshunter.io/ios/app/loop-brain-puzzle/id6476114211/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 7 MB |
| Requires iOS | **15.1** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chain1 OU](https://appshunter.io/developer/1725863864) | [泽森 陈](https://appshunter.io/developer/1884030414) |

## What reviewers say

### Loop

[App page](https://appshunter.io/ios/app/loop-brain-puzzle/id6476114211)

A strategy puzzle game that challenges your logical thinking and problem-solving skills. Navigate grid-based levels, use queue boxes with action items, and master looping logic to collect all points and avoid infinite loops. Enjoy a mental workout with progressive difficulty and creative solutions.

**Highlights:** Grid-based puzzles, Queue box mechanic, Looping logic action, Varied levels with increasing complexity, Points collection challenges, Ad-free gameplay, Offline play

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 15 Gold Nuggets | $0.99 | one-time |
| Unlock All Levels | $2.99 | one-time |
| 75 Gold Nuggets | $3.99 | one-time |
| 300 Gold Nuggets | $9.99 | one-time |


### Stack Circuit

[App page](https://appshunter.io/ios/app/stack-circuit-smart-assembly/id6760984535)

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

**In-app purchases:** none


## Frequently asked questions

### Is Loop free?

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

### Is Stack Circuit free?

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

### Do Loop or Stack Circuit have ads?

Neither Loop nor Stack Circuit shows ads.

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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.*