# U vs 푸리

The clearest difference is update cadence: 푸리 at every 3 days against U's every 6 months. U's advantage is iOS requirement (12.1 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

U ships an update every 6 months, 푸리 every 3 days. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | U | 푸리 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 8 MB | 76 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MIN HO KIM](https://appshunter.io/developer/582570599) | [Hwan Kim](https://appshunter.io/developer/6800942600) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-class-cast/id1491457129)

**Features:** macOS Compatibility

**In-app purchases:** none


### 푸리

[App page](https://appshunter.io/ios/app/ai/id6800942598)

This app analyzes your step-by-step solutions to past college entrance exam math problems using AI. It identifies not just incorrect answers but also the specific reasoning errors you made, helping you understand why you got it wrong.

**Highlights:** AI analysis of solution steps, Identifies reasoning errors, Automatic grading of multiple-choice and short-answer questions, Automatic error notebook creation, Practice past exam papers, iPad pen support

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

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is 푸리 free?

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

### Do U or 푸리 have ads?

Neither U nor 푸리 shows ads.

### Which is updated more often, U or 푸리?

U ships an update every 6 months, and 푸리 every 3 days. Most recently, U was updated on October 5, 2026 and 푸리 on October 15, 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.*