# 도서관 시설예약 vs 쏘리

The clearest difference is update cadence: 쏘리 at every 9 days against 도서관 시설예약's every 3 months. 도서관 시설예약's advantage is iOS requirement (15.6 vs 18.6). On price, review sentiment, 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.

도서관 시설예약 ships an update every 3 months, 쏘리 every 9 days. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 도서관 시설예약 | 쏘리 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 9 MB | 10 MB |
| Requires iOS | **15.6** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Sungshin Women's University](https://appshunter.io/developer/957664892) | [Minwoo Ryu](https://appshunter.io/developer/6775730330) |

## What reviewers say

### 도서관 시설예약

[App page](https://appshunter.io/ios/app/id1509364148)

This app provides university library users with convenient access to services like mobile identification for entry and authentication, real-time seat availability checks, and group study room reservations. It also allows users to view their current bookings and past history, with features for seat return and reservation cancellation.

**Highlights:** Mobile ID for library access and authentication, Real-time seat availability and layout maps, Group study room reservation system, View current and past booking information, Remote seat return and reservation cancellation, Location-based study room authentication

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

**In-app purchases:** none


### 쏘리

[App page](https://appshunter.io/ios/app/ai/id6801599369)

This app helps you build a habit of speaking English daily with an AI partner. It listens to your speech, corrects mistakes with explanations, and offers various practice scenarios. All features are free to use.

**Highlights:** AI voice conversation with real-time correction, Instant feedback and explanations in Korean, 6 levels of situational lessons with 9,000+ phrases, AI role-playing for real-life scenarios, Spaced repetition review deck for learned vocabulary, Progress tracking with XP and streaks

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

**In-app purchases:** none


## Frequently asked questions

### Is 도서관 시설예약 free?

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

### Is 쏘리 free?

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

### Do 도서관 시설예약 or 쏘리 have ads?

Neither 도서관 시설예약 nor 쏘리 shows ads.

### Which is updated more often, 도서관 시설예약 or 쏘리?

도서관 시설예약 ships an update every 3 months, and 쏘리 every 9 days. Most recently, 도서관 시설예약 was updated on October 10, 2026 and 쏘리 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.*