# AL CHEM vs Question King

The clearest difference is price: Question King at Free against AL CHEM's $11.99. Question King also leads on update cadence (every 9 days vs every 4 months). AL CHEM's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 17.0). On ads and in-app purchases there is nothing between them.

Question King is free to download; AL CHEM costs $11.99 up front. AL CHEM sells 2 one-off in-app purchases and Question King sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

AL CHEM ships an update every 4 months, Question King every 9 days. The most recent releases landed on September 13, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | AL CHEM | Question King |
| --- | --- | --- |
| Price | $11.99 | **Free** |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/al-chem/id987341808/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Paid | — |
| Size | 60 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [东东 张](https://appshunter.io/developer/987341807) | [明博 薛](https://appshunter.io/developer/6775205736) |

## What reviewers say

### AL CHEM

[App page](https://appshunter.io/ios/app/al-chem/id987341808)

Enhance your A-Level Chemistry studies with comprehensive teaching notes, interactive flashcards, and quizzes. This app provides useful tools to aid your learning journey in chemistry.

**Highlights:** A Level Chemistry teaching notes, Flash cards for revision, Quizzes with explanations, Useful chemistry learning tools

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flash Cards | $4.99 | one-time |
| Test | $5.99 | one-time |


### Question King

[App page](https://appshunter.io/ios/app/question-king/id6775220695)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $2.99 | per month |
| Pro Monthly | $5.99 | per month |
| Plus Yearly | $29.99 | per year |
| Pro Yearly | $59.99 | per year |


## Frequently asked questions

### Is AL CHEM free?

AL CHEM costs $11.99, and also offers in-app purchases.

### Is Question King free?

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

### Do AL CHEM or Question King have ads?

Neither AL CHEM nor Question King shows ads.

### Which is updated more often, AL CHEM or Question King?

AL CHEM ships an update every 4 months, and Question King every 9 days. Most recently, AL CHEM was updated on September 13, 2026 and Question King on September 18, 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.*