# KChem vs サクッと化学(共通テスト対策)1問1答【サクトレ】

The clearest difference is update cadence: KChem at daily against サクッと化学(共通テスト対策)1問1答【サクトレ】's weekly. サクッと化学(共通テスト対策)1問1答【サクトレ】's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. KChem sells 1 in-app purchase, starting at $2.49 per month and サクッと化学(共通テスト対策)1問1答【サクトレ】 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

KChem ships an update daily, サクッと化学(共通テスト対策)1問1答【サクトレ】 weekly. The most recent releases landed on September 18, 2026 and August 13, 2026 respectively.

## The numbers

| Metric | KChem | サクッと化学(共通テスト対策)1問1答【サクトレ】 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | Freemium | — |
| Size | 12 MB | 56 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Akihiko Kitamura](https://appshunter.io/developer/1585792497) | [DECRYPTION, CO., LTD.](https://appshunter.io/developer/1778172529) |

## 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 |


### サクッと化学(共通テスト対策)1問1答【サクトレ】

[App page](https://appshunter.io/ios/app/11/id6744935652)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 全問題アンロック | $0.49 | one-time |


## Frequently asked questions

### Is KChem free?

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

### Is サクッと化学(共通テスト対策)1問1答【サクトレ】 free?

サクッと化学(共通テスト対策)1問1答【サクトレ】 is free to download, with in-app purchases available.

### Do KChem or サクッと化学(共通テスト対策)1問1答【サクトレ】 have ads?

Neither KChem nor サクッと化学(共通テスト対策)1問1答【サクトレ】 shows ads.

### Which is updated more often, KChem or サクッと化学(共通テスト対策)1問1答【サクトレ】?

KChem ships an update daily, and サクッと化学(共通テスト対策)1問1答【サクトレ】 weekly. Most recently, KChem was updated on September 18, 2026 and サクッと化学(共通テスト対策)1問1答【サクトレ】 on August 13, 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.*