Is it Duo-ready?

Vocal Pitch Monitor

Tadao Yamaoka

Does Vocal Pitch Monitor work on iPhone Duo?

Not yet. The latest version of Vocal Pitch Monitor we've seen on the App Store (1.3.2, released September 24, 2026) came out before Apple started accepting iOS 27.1 SDK builds on October 5, 2026, so it isn't built for the full iPhone Duo display. Depending on how it was built, it either fills most of the inner display or opens in a smaller window with empty space around it.

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By position

Outer screenNo data
Inner screenNo data
Half-folded (tabletop)No data
Keeps your place when foldingNo data

From recent reports. “Didn't try” answers aren't counted.

App Store updates

Version 1.3.2

Checked every few hours. Only builds made with the iOS 27.1 SDK, accepted since October 5, 2026, can use the whole inner display. Owner reports confirm whether an update did.

Report how it runs

How does Vocal Pitch Monitor run on your Duo?

Screenshots

Optional, up to 4. Unfolded is most useful. We check each one before it's shown, and remove location and other hidden details.

Positions you tried

Outer screen
Inner screen
Half-folded (tabletop)
Keeps your place when folding

Optional. It helps people who use the phone a certain way.

Details

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Badge for developers

iPhone Duo status of Vocal Pitch Monitor
Markdown
[![iPhone Duo status](https://isitduoready.com/app/vocal-pitch-monitor/badge.svg)](https://isitduoready.com/app/vocal-pitch-monitor)
HTML
<a href="https://isitduoready.com/app/vocal-pitch-monitor"><img src="https://isitduoready.com/app/vocal-pitch-monitor/badge.svg" alt="iPhone Duo status of Vocal Pitch Monitor" height="20"></a>

Shows Vocal Pitch Monitor's current status and updates by itself. Add it to your README, website or press kit.