# MU vs 작쌤 Jakssem

MU and 작쌤 Jakssem are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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 3 days. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | MU | 작쌤 Jakssem |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | Free | — |
| Size | 40 MB | 53 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jisoo Kim](https://appshunter.io/developer/6800597796) | [Jakssem Inc.](https://appshunter.io/developer/6810133256) |

## What reviewers say

### MU

[App page](https://appshunter.io/ios/app/munote/id6800597794)

This app accurately tracks your actual playing time during music practice, excluding pauses. It analyzes sound on your device without recording, allowing you to log practice sessions, pieces, and notes. It offers gentle reminders and syncs your history across devices when signed in.

**Highlights:** Counts only playing time, Excludes pauses automatically, Analyzes sound on-device, Logs practice sessions and notes, Calendar view of practice history, Gentle daily reminders

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

**In-app purchases:** none


### 작쌤 Jakssem

[App page](https://appshunter.io/ios/app/jakssem/id6810133254)

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

**In-app purchases:** none


## Frequently asked questions

### Is MU free?

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

### Is 작쌤 Jakssem free?

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

### Do MU or 작쌤 Jakssem have ads?

Neither MU nor 작쌤 Jakssem shows ads.

### Which is updated more often, MU or 작쌤 Jakssem?

MU ships an update every 3 days, and 작쌤 Jakssem every 3 days. Most recently, MU was updated on October 15, 2026 and 작쌤 Jakssem on October 12, 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.*