# KChem vs 古文漢文 でた単 言の葉

The clearest difference is update cadence: KChem at daily against 古文漢文 でた単 言の葉's every 2 days. KChem also leads on iOS requirement (15.0 vs 17.0). 古文漢文 でた単 言の葉's advantage is review sentiment (83% vs 75%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. KChem sells 1 in-app purchase, starting at $2.49 per month and 古文漢文 でた単 言の葉 sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

KChem ships an update daily, 古文漢文 でた単 言の葉 every 2 days. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | KChem | 古文漢文 でた単 言の葉 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 2 days |
| Monetization | Freemium | Freemium |
| Size | 12 MB | 40 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Akihiko Kitamura](https://appshunter.io/developer/1585792497) | [Namiko Takahashi](https://appshunter.io/developer/1349212420) |

## What reviewers say

### 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 |


### 古文漢文 でた単 言の葉

[App page](https://appshunter.io/ios/app/id6795464291)

Master classical Japanese and Chinese vocabulary and grammar for university entrance exams. Features spaced repetition, practice tests, and detailed word explanations based on real exam data. Includes audio playback and typing exercises.

**Highlights:** Spaced repetition learning, Practice tests with feedback, Detailed word explanations, Audio playback for vocabulary, Typing exercises for Kanji, Progress tracking and analytics, Customizable word lists

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| でた単プレミアム | $9.99 | per month |
| でた単プレミアム | $24.99 | per year |


## Frequently asked questions

### Is KChem free?

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

### Is 古文漢文 でた単 言の葉 free?

古文漢文 でた単 言の葉 is free to download, with in-app purchases available.

### Do KChem or 古文漢文 でた単 言の葉 have ads?

Neither KChem nor 古文漢文 でた単 言の葉 shows ads.

### Which is updated more often, KChem or 古文漢文 でた単 言の葉?

KChem ships an update daily, and 古文漢文 でた単 言の葉 every 2 days. Most recently, KChem was updated on November 3, 2026 and 古文漢文 でた単 言の葉 on November 11, 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.*