# Duo Accordion — Accordion in your pocket

> Accordion in your pocket (iPhone/iPad app by Haiyi Mei.)

- Source: https://appshunter.io/ios/app/duo-accordion/id6818464494 (this page in markdown: same URL + `.md`)
- Developer: [Haiyi Mei](https://appshunter.io/developer/1878580278)
- Category: Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 27.0 · 14 MB
- Languages: American English, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Malay, Brazilian Portuguese, Chinese (Simplified, China) and 3 more
- Released: 2026-10-28
- Data updated: 2026-11-06

## What is Duo Accordion?

An accordion you can play anywhere.

Play with the fold on iPhone Duo. Hold a key and open or close your phone to move the bellows and shape the sound. The instrument adapts between the inner and outer displays. Touch playing remains available on every supported iPhone and iPad.

Play melodies on the piano keys and add basses and major chords on a Stradella bass board. Recorded accordion reeds bring the instrument to life.

On iPhone, press the keys and use the device volume buttons to shape the loudness. On iPad, play both hands together; Easy Play keeps the air flowing while you slide across the bellows or adjust the brass meter.

Full screen on iPad gives you more room, more keys and more bass buttons. On iPhone, switch between keyboard and chords.

Explore the interactive playing guide and listen to a little waltz.

Concert Accordion, an optional one-time in-app purchase, adds minor and seventh chords, the endless key wheel that moves the left hand into any key while the piano stays put, and three more registers: Musette, Cello and Master. Try it in the app before you buy.

Made for iPhone and iPad. Free to play, with built-in sounds that work offline. No account, ads or subscription. Available in 13 languages.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Concert Accordion | $4.99 | one-time |


## Is Duo Accordion safe?

Not enough ratings yet to assess Duo Accordion.

## Is Duo Accordion legit?

Duo Accordion appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Duo Accordion is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-11-03

Play with the fold on iPhone Duo. Hold a key and open or close your phone to move the bellows and shape the sound. The instrument adapts between the inner and outer displays. Touch playing remains available on every supported iPhone and iPad.

### 1.0 — 2026-10-29

No release notes.

## More apps by Haiyi Mei

- [Chord Spell](https://appshunter.io/ios/app/chord-spell/id6759431250)
- [CinemaCC](https://appshunter.io/ios/app/cinemacc/id6789637324)

All apps by Haiyi Mei: https://appshunter.io/developer/1878580278

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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 2026-11-06.*