# KChem vs 共テのための高校情報I

The clearest difference is ads: KChem at none against 共テのための高校情報I's shown. KChem also leads on update cadence (daily vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. KChem sells 1 in-app purchase, starting at $2.49 per month and 共テのための高校情報I sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

KChem ships an update daily, 共テのための高校情報I every 2 weeks. The most recent releases landed on September 18, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | KChem | 共テのための高校情報I |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | Freemium | — |
| Size | 12 MB | 12 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Akihiko Kitamura](https://appshunter.io/developer/1585792497) | [TomatoAppLab](https://appshunter.io/developer/1676711750) |

## 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 |


### 共テのための高校情報I

[App page](https://appshunter.io/ios/app/i/id6752214850)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| アプリ内の広告を消す | $1.99 | one-time |


## Frequently asked questions

### Is KChem free?

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

### Is 共テのための高校情報I free?

共テのための高校情報I is free to download, with in-app purchases available.

### Do KChem or 共テのための高校情報I have ads?

共テのための高校情報I shows ads; KChem does not.

### Which is updated more often, KChem or 共テのための高校情報I?

KChem ships an update daily, and 共テのための高校情報I every 2 weeks. Most recently, KChem was updated on September 18, 2026 and 共テのための高校情報I on August 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*