A tuner, chord reference and metronome, adjusted for both Duo displays
Does Guitar Wiz - Tuner & Chords work on iPhone Duo?
Yes, the developer says so: the release notes for Guitar Wiz 2.2 say the tuner and other screens adapt from the Duo's cover to its inner display.
- App Store confirmedThe developer, in the App Store release notes for version 2.2 (released October 9, 2026): the tuner adapts from the Duo's cover to the open display, with Duo refinements across the app.
Adapted for the fold
We're waiting on details of exactly what Guitar Wiz - Tuner & Chords changes for the fold. Are you the developer? Tell us.
About Guitar Wiz - Tuner & Chords
Guitar Wiz combines a tuner, chord references and a metronome. Version 2.2 adds iPhone Duo support, the release notes say: the tuner adapts from the cover to the open display, and other screens across the app are refined for the Duo.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· App Store page reviewed
App Store confirmed · iphone-duo
The App Store release notes for version 2.2 (released October 8, 2026) mention iPhone Duo: "Introducing a major Guitar Wiz update, now fully optimized for iPhone Duo!"
App version: 2.2.
Store text only: we haven't seen the app running, and the store page doesn't show how each pose is used.
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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Sources: Guitar Wiz - Tuner & Chords on the App Store (apps.apple.com) · Guitar Wiz in Apple's App Store lookup (itunes.apple.com)
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