# Pop On The Circle vs Stack Order

The clearest difference is in-app purchases: Pop On The Circle at none against Stack Order's 2. Pop On The Circle also leads on iOS requirement (11.0 vs 13.0). Stack Order's advantage is ads (none vs shown) and update cadence (weekly vs every 8 months). On price and device support there is nothing between them.

Both are free to download. Stack Order sells 2 one-off in-app purchases. Pop On The Circle asks for nothing beyond the download.

Pop On The Circle ships an update every 8 months, Stack Order weekly. The most recent releases landed on October 26, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Pop On The Circle | Stack Order |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Weekly** |
| Size | 27 MB | 179 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [丽婷 谭](https://appshunter.io/developer/635851132) | [Gloryway Puzzle](https://appshunter.io/developer/1853465960) |

## What reviewers say

### Pop On The Circle

[App page](https://appshunter.io/ios/app/pop-on-the-circle/id940305105)

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

**In-app purchases:** none


### Stack Order

[App page](https://appshunter.io/ios/app/stack-order-card-sort-games/id6762169694)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NoAds | $7.99 | one-time |
| Ad Free Pack | $12.99 | one-time |


## Frequently asked questions

### Is Pop On The Circle free?

Pop On The Circle is free to download, with no in-app purchases.

### Is Stack Order free?

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

### Do Pop On The Circle or Stack Order have ads?

Pop On The Circle shows ads; Stack Order does not.

### Which is updated more often, Pop On The Circle or Stack Order?

Pop On The Circle ships an update every 8 months, and Stack Order weekly. Most recently, Pop On The Circle was updated on October 26, 2026 and Stack Order 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.*