# M vs 복리계산

The clearest difference is in-app purchases: M at none against 복리계산's 1. M also leads on ads (none vs shown) and iOS requirement (9.0 vs 13.0). 복리계산's advantage is update cadence (every 4 days vs monthly). On price and device support there is nothing between them.

Both are free to download. 복리계산 sells 1 one-off in-app purchase. M asks for nothing beyond the download.

M ships an update monthly, 복리계산 every 4 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | M | 복리계산 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Size | 55 MB | 49 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hwacheon Machine Tool Co.,Ltd](https://appshunter.io/developer/1116013536) | [HYUNWOO LEE](https://appshunter.io/developer/1592216709) |

## What reviewers say

### M

[App page](https://appshunter.io/ios/app/m-vision-mobile/id1116013537)

**Features:** macOS Compatibility

**In-app purchases:** none


### 복리계산

[App page](https://appshunter.io/ios/app/id6504154689)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove all ads | $9.99 | one-time |


## Frequently asked questions

### Is M free?

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

### Is 복리계산 free?

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

### Do M or 복리계산 have ads?

복리계산 shows ads; M does not.

### Which is updated more often, M or 복리계산?

M ships an update monthly, and 복리계산 every 4 days. Most recently, M was updated on October 29, 2026 and 복리계산 on October 30, 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.*