# 厚大爱题库 vs Math Key

The clearest difference is price: 厚大爱题库 at Free against Math Key's $1.99. 厚大爱题库 also leads on iOS requirement (11.0 vs 17.0). Math Key's advantage is update cadence (every 3 weeks vs every 3 months). On ads, in-app purchases and device support there is nothing between them.

厚大爱题库 is free to download; Math Key costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

厚大爱题库 ships an update every 3 months, Math Key every 3 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 厚大爱题库 | Math Key |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[3.3 (6 ratings)](https://appshunter.io/ios/app/id1267692150/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 147 MB | 1 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BeiJing Houdaxuancheng Education Technology Co.,LTD.](https://appshunter.io/developer/1267692149) | [1STGROUP PRIVATE LIMITED](https://appshunter.io/developer/6773183984) |

## What reviewers say

### 厚大爱题库

[App page](https://appshunter.io/ios/app/id1267692150)

**Features:** Vision Pro support

**In-app purchases:** none


### Math Key

[App page](https://appshunter.io/ios/app/math-key/id6790252476)

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

**In-app purchases:** none


## Frequently asked questions

### Is 厚大爱题库 free?

厚大爱题库 is free to download, with no in-app purchases.

### Is Math Key free?

Math Key costs $1.99, with no in-app purchases.

### Do 厚大爱题库 or Math Key have ads?

Neither 厚大爱题库 nor Math Key shows ads.

### Which is updated more often, 厚大爱题库 or Math Key?

厚大爱题库 ships an update every 3 months, and Math Key every 3 weeks. Most recently, 厚大爱题库 was updated on October 24, 2026 and Math Key on October 28, 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.*