# Chappy vs 制限QRコード

The clearest difference is ads: 制限QRコード at none against Chappy's shown. 制限QRコード also leads on device support (3 vs 1) and iOS requirement (15.2 vs 18.0). Chappy's advantage is update cadence (every 4 weeks vs every 4 months). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Chappy ships an update every 4 weeks, 制限QRコード every 4 months. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Chappy | 制限QRコード |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 44.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 weeks** | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 17 MB | 9 MB |
| Requires iOS | 18.0 | **15.2** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Saerom Shin](https://appshunter.io/developer/1716768656) | [Kuniaki Fujimoto](https://appshunter.io/developer/1585749122) |

## What reviewers say

### Chappy

[App page](https://appshunter.io/ios/app/chappy-ai-quiz-solver/id6472210312)

Snap a photo of your homework problem and get instant answers with an AI tutor. This app provides immediate explanations for questions, helping you understand concepts without waiting for a teacher. Simply take a picture, crop it, and receive your solution.

**Highlights:** AI-powered problem solver, Instant answers, Photo recognition for questions, Immediate explanations, Homework assistance

**In-app purchases:** none


### 制限QRコード

[App page](https://appshunter.io/ios/app/qr/id6654908739)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chappy free?

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

### Is 制限QRコード free?

制限QRコード is free to download, with no in-app purchases.

### Do Chappy or 制限QRコード have ads?

Chappy shows ads; 制限QRコード does not.

### Which is updated more often, Chappy or 制限QRコード?

Chappy ships an update every 4 weeks, and 制限QRコード every 4 months. Most recently, Chappy was updated on October 24, 2026 and 制限QRコード on October 5, 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.*