# OTOTO — Music Staff Viewer Mertonome

> Music Staff Viewer Mertonome (iPhone/iPad app by 玺 章.)

- Source: https://appshunter.io/ios/app/ototo/id1660434628 (this page in markdown: same URL + `.md`)
- Developer: [玺 章](https://appshunter.io/developer/1523675853)
- Category: Music, Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 12 · 66 MB
- Languages: English, Japanese, Chinese
- Released: 2022-12-27
- Data updated: 2026-07-23
- User reviews in markdown: https://appshunter.io/ios/app/ototo/id1660434628/reviews.md

## What is OTOTO?

* Music Sheet reader
Read MXL, musicxml, PNG, JPEG, PDF format files
Recognize the measures and staff of images or PDF
Dark mode reading, more energy-efficient
auto scroll sheet in the Landscape screen
save, manage the music sheets

* Scanner
Input from album, local files, camera
Export PDF

* Metronome
8 optional sounds 
Sound, vibration, appearance, and flashing optional modes 
Set strong and weak beat
Display measure number
Save music info 

* Bmp counter
 Count beats and practice rhythm


No advertisements, focus on practicing
No registration required

 
 EULA https://www.99zz.net/%e5%88%a9%e7%94%a8%e8%a6%8f%e7%b4%84/


## Version history (last 5 releases)

### 0.8.0 — 2025-06-08

improve performance

### 0.7.1 — 2025-04-08

get BPM, auto-scroll in music XML

### 0.7.0 — 2025-04-07

Play audio of music xml

### 0.6.1 — 2025-03-20

fix bugs

### 0.6.0 — 2025-03-18

Read MXL, musicxml file

## Apps similar to OTOTO

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ScanScore Scanner](https://appshunter.io/ios/app/scanscore-scanner/id6738876700) | 1.0 (2) | Free | Music |

## More apps by 玺 章

- [Huni-N1 N2 N3日语听力真题JLPT日本語聴解](https://appshunter.io/ios/app/huni-n1-n2-n3jlpt/id1525642436)
- [Youge Japanese Listening(2020)](https://appshunter.io/ios/app/youge-japanese-listening2020/id1560550411)
- [Recognize Speech Translate](https://appshunter.io/ios/app/recognize-speech-translate/id1585527332)
- [House Tools calculate sunshine](https://appshunter.io/ios/app/house-tools-calculate-sunshine/id1594785143)
- [JPKI eSign signature on PDF](https://appshunter.io/ios/app/jpki-esign-signature-on-pdf/id6458650235)

All apps by 玺 章: https://appshunter.io/developer/1523675853

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-23.*