# 서울도서관공식앱 vs Withpiano

The clearest difference is review sentiment: Withpiano at 33% against 서울도서관공식앱's 11%. 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 서울도서관공식앱 | Withpiano |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.4 (13 ratings)](https://appshunter.io/ios/app/id777428688/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 10.7% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 10 MB | 50 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Seoul Metropolitan Government](https://appshunter.io/developer/444447999) | [Sungsik Kim](https://appshunter.io/developer/1527041339) |

## What reviewers say

### 서울도서관공식앱

[App page](https://appshunter.io/ios/app/id777428688)

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

**In-app purchases:** none


### Withpiano

[App page](https://appshunter.io/ios/app/withpiano/id1548408091)

This app allows piano students to easily manage their lessons and access school information. Users can check and book lesson schedules in real-time, and stay updated with the latest news and announcements from the academy.

**Highlights:** Real-time lesson scheduling, Lesson booking and confirmation, Academy news and information, Easy student access, Progress tracking (implied)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 서울도서관공식앱 free?

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

### Is Withpiano free?

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

### Do 서울도서관공식앱 or Withpiano have ads?

Neither 서울도서관공식앱 nor Withpiano shows ads.

### Which is updated more often, 서울도서관공식앱 or Withpiano?

서울도서관공식앱 ships an update every 2 months, and Withpiano every 2 months. Most recently, 서울도서관공식앱 was updated on November 11, 2026 and Withpiano 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.*