# Questi vs 수학비서

The clearest difference is review sentiment: 수학비서 at 100% against Questi's 84%. 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.

Questi ships an update weekly, 수학비서 every 4 days. The most recent releases landed on September 14, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Questi | 수학비서 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 83.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free | — |
| Size | 14 MB | 80 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bnz Inc](https://appshunter.io/developer/1602520806) | [포스트매스](https://appshunter.io/developer/1785605543) |

## What reviewers say

### Questi

[App page](https://appshunter.io/ios/app/questi-ai-problem-solver/id6736639784)

This AI-powered app provides clear explanations for complex problems across all academic levels, from elementary to university. It helps users understand the essence of problems, maximize learning efficiency, and offers accessibility on multiple devices.

**Highlights:** AI-powered explanations, Covers all academic levels, In-depth understanding, Maximize learning efficiency, Accessible on PC, tablet, smartphone

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

**In-app purchases:** none


### 수학비서

[App page](https://appshunter.io/ios/app/id6739489194)

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

**In-app purchases:** none


## Frequently asked questions

### Is Questi free?

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

### Is 수학비서 free?

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

### Do Questi or 수학비서 have ads?

Neither Questi nor 수학비서 shows ads.

### Which is updated more often, Questi or 수학비서?

Questi ships an update weekly, and 수학비서 every 4 days. Most recently, Questi was updated on September 14, 2026 and 수학비서 on September 11, 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.*