A metronome with the beat display on one half of the open Duo and controls on the other
Does Metronome ∞ work on iPhone Duo?
Yes, and seen in the simulator: open, the beat display fills one half and the tempo and meter controls the other, with the tabs down the side. The developer says the tuner splits at the fold too.
- Simulator verifiedPanoramic Software Inc., the developer, in a submission to FoldHunt on October 18, 2026, and in the App Store release notes for version 4.0.4 (released October 14, 2026): "iPhone Duo - controls down the side, and the metronome and tuner split at the fold when open". The app's page on the developer's website has pictures of the closed and open layouts.
Adapted for the fold
- Closed · Outer display
The iPhone layout
Closed, the metronome looks as it does on any iPhone: the beat display on top, tempo buttons and the sound dial below, and the tabs for Metronome, Tuner, Guitar and the in-app store along the bottom.
- Open · Inner display
Beat display on one half, controls on the other
Open, the beat display and the row of beats fill one half. The tempo and meter buttons, the sound dial, the timer and the Stop button fill the other, and the tabs move into a rail down the right edge. The release notes say the metronome and the tuner both split at the fold.
About Metronome ∞
Metronome ∞ is a metronome for musicians, teachers and students, with a tuner and guitar tools, including a fretboard with chords and scales. Version 4.0.4 adds Neon Waves, a beat display of glowing waves that swell on every beat, and iPhone Duo support.
Closed, it is the iPhone layout. Open, the beat display sits on one half of the Duo and the controls on the other, with the tabs in a rail down the side, and the release notes say the metronome and tuner split at the fold. The developer’s page has pictures of both layouts on the Duo.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· Simulator screenshots reviewed
Simulator verified · iphone-duo
Looked at the six iPhone Duo pictures on the developer's Metronome page, each 2853 × 2007 pixels, the size of the iPhone Duo simulator's open display. They show the app's own screens on a drawn Duo. Open, the beat display and row of beats sit on the left half, the tempo and meter buttons, sound dial, timer and Stop on the right, and a rail of tabs runs down the right edge; the guitar fretboard and tuner appear in the same open layout.
Poses shown: Closed, Open. These are observations of the evidence, not a test of every interaction.
App version: Not recorded in this evidence. Environment: iPhone Duo simulator.
Still pictures with the developer's artwork around the phones, not a recording. The tuner's split at the fold is only partly visible, and the half-folded poses and Split View aren't shown. No build was tested.
View reviewed evidence ↗
Related guides
The best iPhone Duo apps so far (October 2026)
The apps worth installing now that iPhone Duo is on sale, from the apps Apple named as launch partners to indie apps whose developers have shown a real iPhone Duo layout, picked for what they do when you open the phone.
Do your apps work on iPhone Duo? What happens before they're updated
Every iPhone app opens on iPhone Duo, but only updated ones fill the inner display. What an app looks like before its developer adapts it, how to tell which are ready, and which popular apps have said so.
Is this your app?
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<a href="https://foldhunt.com/apps/metronome-infinity/"><img src="https://foldhunt.com/badges/featured-on-foldhunt.svg" alt="Featured on FoldHunt" width="220" height="54"></a>Need to update the listing? Email the editor.
Sources: Metronome ∞ on the App Store (apps.apple.com) · Metronome on Panoramic Software's website, with iPhone Duo pictures (panoramicsoft.com)
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