# 코스모스 vs 도서관 시설예약

The clearest difference is review sentiment: 도서관 시설예약 at 100% against 코스모스's 50%. 코스모스's advantage is update cadence (every 2 weeks vs every 3 months). 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.

코스모스 ships an update every 2 weeks, 도서관 시설예약 every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 코스모스 | 도서관 시설예약 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (304 ratings)](https://appshunter.io/ios/app/id1142523906/reviews)** | — |
| Number of ratings | **304** | — |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | — | Free |
| Size | 122 MB | 9 MB |
| Requires iOS | 16 | **15.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Ubion](https://appshunter.io/developer/424208544) | [Sungshin Women's University](https://appshunter.io/developer/957664892) |

## What reviewers say

### 코스모스

[App page](https://appshunter.io/ios/app/id1142523906)

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Generally good app
- 👍 Useful for lectures
- 👍 Works on Samsung

**What reviewers complain about**

- 🐛 Frequent crashes and freezes
- 🐛 Login issues (white screen, not loading)
- 🐛 Video player volume control issues (swipe gesture)
- 🐛 Inconsistent progress tracking for videos
- 🐛 Difficulty downloading/sharing files (especially PDF/PPT on iOS)

**Reported bugs**

- App crashes on startup after update
- App freezes on login screen
- Video player volume changes when screen is touched
- Video playback progress not always recorded correctly
- Cannot download or share PDF/PPT files on iOS after update

**Requested features**

- Fix video player volume control gesture
- Add a separate tab for assignments
- Improve notification system (unread indicators, separate settings for discussion rooms)
- Enable split view/multitasking on iPad
- Add screen zoom/enlarge feature for videos on iPad


### 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


## Frequently asked questions

### Is 코스모스 free?

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

### Is 도서관 시설예약 free?

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

### Do 코스모스 or 도서관 시설예약 have ads?

Neither 코스모스 nor 도서관 시설예약 shows ads.

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

코스모스 ships an update every 2 weeks, and 도서관 시설예약 every 3 months. Most recently, 코스모스 was updated on November 6, 2026 and 도서관 시설예약 on November 3, 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.*