# Square and Circular vs DiffChar

The clearest difference is in-app purchases: Square and Circular at none against DiffChar's 3. DiffChar's advantage is update cadence (weekly vs every 9 months) and iOS requirement (9.0 vs 12.0). On price, ads and device support there is nothing between them.

Both are free to download. DiffChar sells 3 one-off in-app purchases. Square and Circular asks for nothing beyond the download.

Square and Circular ships an update every 9 months, DiffChar weekly. Both last shipped on October 7, 2026.

## The numbers

| Metric | Square and Circular | DiffChar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diffchar/id1258682952/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 25 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [娟 杜](https://appshunter.io/developer/974748350) | [景灯 梁](https://appshunter.io/developer/977915723) |

## What reviewers say

### Square and Circular

[App page](https://appshunter.io/ios/app/square-and-circular/id1068916272)

**Features:** macOS Compatibility

**In-app purchases:** none


### DiffChar

[App page](https://appshunter.io/ios/app/diffchar/id1258682952)

Test your observation skills by finding the unique Chinese character among many that look alike. This game offers over 360 challenges, combining fun with education for a simple yet engaging experience.

**Highlights:** Identify unique Chinese characters, Over 360 challenging levels, Simple and fun gameplay, Educational value, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Characters | $0.99 | one-time |
| Removing balls 10 times | $0.99 | one-time |
| Removing Ads | $1.99 | one-time |


## Frequently asked questions

### Is Square and Circular free?

Square and Circular is free to download, with no in-app purchases.

### Is DiffChar free?

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

### Do Square and Circular or DiffChar have ads?

Neither Square and Circular nor DiffChar shows ads.

### Which is updated more often, Square and Circular or DiffChar?

Square and Circular ships an update every 9 months, and DiffChar weekly. Most recently, Square and Circular was updated on October 7, 2026 and DiffChar 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.*