# 3MS vs 조안호의 국민연산

The clearest difference is update cadence: 3MS at every 11 days against 조안호의 국민연산's every 3 weeks. 3MS also leads on iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

3MS ships an update every 11 days, 조안호의 국민연산 every 3 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 3MS | 조안호의 국민연산 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id6472438665/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 94.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 20 MB | 45 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brain OS Institute](https://appshunter.io/developer/1124772329) | [An-ho Cho](https://appshunter.io/developer/1578994143) |

## What reviewers say

### 3MS

[App page](https://appshunter.io/ios/app/3ms/id1481545015)

**Features:** macOS Compatibility

**In-app purchases:** none


### 조안호의 국민연산

[App page](https://appshunter.io/ios/app/id6472438665)

This app offers a gamified approach to practicing math calculations for elementary and middle school students. It features progressive leveling for motivation and detailed statistics to track learning progress. Focus on core calculation skills to build a strong foundation for advanced math.

**Highlights:** Gamified calculation problem solving, Level-up system for achievement, Daily and missed learning modules, Covers natural numbers, fractions, and equations, Curriculum progress tracking, Detailed learning statistics, Focus on essential high school math calculations

**In-app purchases:** none


## Frequently asked questions

### Is 3MS free?

3MS is free to download, with no in-app purchases.

### Is 조안호의 국민연산 free?

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

### Do 3MS or 조안호의 국민연산 have ads?

Neither 3MS nor 조안호의 국민연산 shows ads.

### Which is updated more often, 3MS or 조안호의 국민연산?

3MS ships an update every 11 days, and 조안호의 국민연산 every 3 weeks. Most recently, 3MS was updated on October 6, 2026 and 조안호의 국민연산 on October 24, 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.*