# 有機化学 vs KChem

The clearest difference is price: KChem at Free against 有機化学's $5.99. KChem also leads on update cadence (daily vs every 2 days). 有機化学's advantage is in-app purchases (none vs 1) and review sentiment (93% vs 75%). On ads, device support and iOS requirement there is nothing between them.

KChem is free to download; 有機化学 costs $5.99 up front. KChem sells 1 in-app purchase, starting at $2.49 per month. 有機化学 asks for nothing beyond the download.

有機化学 ships an update every 2 days, KChem daily. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 有機化学 | KChem |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Positive reviews | **92.9% of reviews** | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Monetization | — | Freemium |
| Size | 40 MB | 12 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hideki Touhara](https://appshunter.io/developer/1268738829) | [Akihiko Kitamura](https://appshunter.io/developer/1585792497) |

## What reviewers say

### 有機化学

[App page](https://appshunter.io/ios/app/id1317601872)

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

**In-app purchases:** none


### KChem

[App page](https://appshunter.io/ios/app/kchem/id1601032155)

This app helps high school students memorize organic chemistry concepts efficiently. It features a memorization mode for easy output, comprehensive coverage of high school organic chemistry topics, and clear explanations. Some advanced content requires a subscription.

**Highlights:** Memorization mode for active recall, Comprehensive high school organic chemistry content, Clear and easy-to-understand explanations, Subscription for advanced topics

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム | $2.49 | per month |


## Frequently asked questions

### Is 有機化学 free?

有機化学 costs $5.99, with no in-app purchases.

### Is KChem free?

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

### Do 有機化学 or KChem have ads?

Neither 有機化学 nor KChem shows ads.

### Which is updated more often, 有機化学 or KChem?

有機化学 ships an update every 2 days, and KChem daily. Most recently, 有機化学 was updated on October 29, 2026 and KChem 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.*