# MSDC vs 無機化学

The clearest difference is in-app purchases: MSDC at none against 無機化学's 3. MSDC also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (11.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. 無機化学 sells 3 in-app purchases, starting at $1.99 per month. MSDC asks for nothing beyond the download.

MSDC ships an update every 2 weeks, 無機化学 every 2 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | MSDC | 無機化学 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 86.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | — | Freemium |
| Size | 11 MB | 8 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YouTeacher Inc.](https://appshunter.io/developer/423093933) | [Akihiko Kitamura](https://appshunter.io/developer/1585792497) |

## What reviewers say

### MSDC

[App page](https://appshunter.io/ios/app/msdc/id1416976829)

**Features:** macOS Compatibility

**In-app purchases:** none


### 無機化学

[App page](https://appshunter.io/ios/app/id6737172145)

This app helps high school students memorize inorganic chemistry concepts. It covers reaction principles, metallic elements, and non-metallic elements, utilizing a red-sheet overlay for easy output and review. User feedback is actively incorporated for improvements.

**Highlights:** Red sheet overlay for output practice, Comprehensive inorganic chemistry content, Covers reaction principles, Covers metallic elements, Covers non-metallic elements, User feedback integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro - 1ヶ月 | $1.99 | per month |
| Pro - 6ヶ月 | $11.99 | per 6 months |
| Pro - 12ヶ月 | $19.99 | per year |


## Frequently asked questions

### Is MSDC free?

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

### Is 無機化学 free?

無機化学 is free to download, with in-app purchases available.

### Do MSDC or 無機化学 have ads?

Neither MSDC nor 無機化学 shows ads.

### Which is updated more often, MSDC or 無機化学?

MSDC ships an update every 2 weeks, and 無機化学 every 2 months. Most recently, MSDC was updated on October 26, 2026 and 無機化学 on October 27, 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.*