# Quiz Boxes vs 妙算21

The clearest difference is in-app purchases: 妙算21 at none against Quiz Boxes's 1. 妙算21 also leads on update cadence (weekly vs every 6 weeks) and rating (5.0 vs 4.8). Quiz Boxes's advantage is ratings volume (27 vs 1) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Quiz Boxes sells 1 one-off in-app purchase. 妙算21 asks for nothing beyond the download.

妙算21 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Quiz Boxes has 27 ratings behind it against 1, so its average is the more settled of the two.

Quiz Boxes ships an update every 6 weeks, 妙算21 weekly. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Quiz Boxes | 妙算21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (27 ratings)](https://appshunter.io/ios/app/quiz-boxes-logic-training/id1247893552/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/21/id6743411073/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 96.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 140 MB | 69 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [肖斌 杨](https://appshunter.io/developer/1079398237) | [抗抗 韩](https://appshunter.io/developer/1681688691) |

## What reviewers say

### Quiz Boxes

[App page](https://appshunter.io/ios/app/quiz-boxes-logic-training/id1247893552)

Enhance your cognitive abilities with a collection of engaging games. Improve memory, sharpen observation skills, boost math proficiency, and refine logical thinking through various training modes. This app offers a fun way to exercise your brain.

**Highlights:** Acuity and observation training, Memory strengthening exercises, Mathematical skills improvement, Logic thinking puzzles, Agility games, Multiple game modes

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hint Key And Remove Ad. | $1.99 | one-time |


### 妙算21

[App page](https://appshunter.io/ios/app/21/id6743411073)

A simple and fun number addition elimination game. Enjoy endless entertainment with this addictive puzzle experience.

**Highlights:** Number addition, Elimination mechanics, Simple gameplay, Addictive puzzle, Casual entertainment

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quiz Boxes free?

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

### Is 妙算21 free?

妙算21 is free to download, with no in-app purchases.

### Which has better reviews, Quiz Boxes or 妙算21?

妙算21 is rated higher. Quiz Boxes averages 4.8 out of 5 from 27 ratings, while 妙算21 averages 5.0 from 1 ratings.

### Do Quiz Boxes or 妙算21 have ads?

Both Quiz Boxes and 妙算21 show ads.

### Which is updated more often, Quiz Boxes or 妙算21?

Quiz Boxes ships an update every 6 weeks, and 妙算21 weekly. Most recently, Quiz Boxes was updated on October 15, 2026 and 妙算21 on October 3, 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.*