# 동그라미 배틀 vs Sum Link

The clearest difference is in-app purchases: 동그라미 배틀 at none against Sum Link's 2. 동그라미 배틀 also leads on device support. Sum Link's advantage is iOS requirement (12.0 vs 15.0). On price and update cadence there is nothing between them.

Both are free to download. Sum Link sells 2 one-off in-app purchases. 동그라미 배틀 asks for nothing beyond the download.

동그라미 배틀 ships an update every 3 weeks, Sum Link every 10 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 동그라미 배틀 | Sum Link |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 55 MB | 25 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [addWisdom](https://appshunter.io/developer/1877454199) | [东晗 于](https://appshunter.io/developer/1733374642) |

## What reviewers say

### 동그라미 배틀

[App page](https://appshunter.io/ios/app/id6760280960)

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

**In-app purchases:** none


### Sum Link

[App page](https://appshunter.io/ios/app/sum-linkconnect-and-sum/id6760685335)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Infinite Focus | $0.99 | one-time |
| Elite Solver Bundle | $1.99 | one-time |


## Frequently asked questions

### Is 동그라미 배틀 free?

동그라미 배틀 is free to download, with no in-app purchases.

### Is Sum Link free?

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

### Which is updated more often, 동그라미 배틀 or Sum Link?

동그라미 배틀 ships an update every 3 weeks, and Sum Link every 10 days. Most recently, 동그라미 배틀 was updated on November 4, 2026 and Sum Link on November 5, 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.*