# 우송도서관 vs 이지패스 SQLD

The clearest difference is update cadence: 우송도서관 at every 3 months against 이지패스 SQLD's every 8 months. 이지패스 SQLD's advantage is device support (3 vs 1) and iOS requirement (14.1 vs 17.0). On price, 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.

우송도서관 ships an update every 3 months, 이지패스 SQLD every 8 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 우송도서관 | 이지패스 SQLD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | — | Free |
| Size | 35 MB | 3 MB |
| Requires iOS | 17.0 | **14.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [LibTech Co.](https://appshunter.io/developer/1099043485) | [Park Chankyu](https://appshunter.io/developer/1540520080) |

## What reviewers say

### 우송도서관

[App page](https://appshunter.io/ios/app/id1464639304)

**Features:** Vision Pro support

**In-app purchases:** none


### 이지패스 SQLD

[App page](https://appshunter.io/ios/app/sqld/id6740427922)

Prepare for the SQLD certification exam with this comprehensive study guide. It offers efficient learning tools, an online study group, and a Q&A community with direct author support. Ideal for beginners and those needing to study on the go.

**Highlights:** SQLD exam preparation, Comprehensive study guide, Online study group, Q&A community, Targeted practice for incorrect answers, Study anytime, anywhere

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

**In-app purchases:** none


## Frequently asked questions

### Is 우송도서관 free?

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

### Is 이지패스 SQLD free?

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

### Do 우송도서관 or 이지패스 SQLD have ads?

Neither 우송도서관 nor 이지패스 SQLD shows ads.

### Which is updated more often, 우송도서관 or 이지패스 SQLD?

우송도서관 ships an update every 3 months, and 이지패스 SQLD every 8 months. Most recently, 우송도서관 was updated on November 3, 2026 and 이지패스 SQLD on November 8, 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.*