# 수학대왕 vs Chappy

The clearest difference is review sentiment: 수학대왕 at 88% against Chappy's 44%. 수학대왕 also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, update cadence, ads 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.

수학대왕 ships an update monthly, Chappy every 4 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 수학대왕 | Chappy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (36 ratings)](https://appshunter.io/ios/app/ai/id1501165233/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | **87.5% of reviews** | 44.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Ad-supported | Ad-supported |
| Size | 86 MB | 17 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Turing Co.,Ltd.](https://appshunter.io/developer/1501165232) | [Saerom Shin](https://appshunter.io/developer/1716768656) |

## What reviewers say

### 수학대왕

[App page](https://appshunter.io/ios/app/ai/id1501165233)

This app offers a comprehensive solution for math studies, providing AI-driven analysis, practice problems, and concise video lectures. It helps users improve their scores by identifying weak areas and offering tailored learning paths. Features include personalized problem sets, original content, and progress tracking.

**Highlights:** AI-driven skill analysis, Personalized problem sets, Original practice problems, Short, efficient video lectures, Progress tracking and reports, Daily scholarship system

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is 수학대왕 free?

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

### Is Chappy free?

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

### Do 수학대왕 or Chappy have ads?

Both 수학대왕 and Chappy show ads.

### Which is updated more often, 수학대왕 or Chappy?

수학대왕 ships an update monthly, and Chappy every 4 weeks. Most recently, 수학대왕 was updated on October 27, 2026 and Chappy on October 24, 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.*