Music · v2.4.5
Does TonalEnergy Tuner & Metronome work on iPhone Duo?
Not confirmed yet. TonalEnergy Tuner & Metronome runs normally on iPhone Duo's outer display, but there's no reliable report yet of how it looks on the inner display.
At a glance
- Inner display (7.6″)
- Not confirmed yet
- Outer display (5.4″)
- Works normally
- Split View
- Supported
- Every app, automatically
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v2.4.5
- Aug 29, 2026
- Duo in release notes
- Not yet
On the inner display
iPhone Duo shows each app in one of three ways depending on which SDK it was built with: letterboxed with black bars (iOS 26 or earlier), expanded with some empty space (iOS 27), or full screen (iOS 27.1 and later). We don't yet know which applies here.
TonalEnergy Tuner & Metronome already ships an iPad version, so its layout already copes with larger screens. That gives its developer a head start on iPhone Duo's inner display, which reports the same regular size class as an iPad.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including TonalEnergy Tuner & Metronome. Open it on the inner display, then add a second app next to it. You can save the pair and come back to it later.
Duo-specific features
None confirmed yet. Duo-specific features include side toolbars, layouts that react to the fold, and content on the outer display while the app is open inside.
Evidence & history
No public evidence yet. iPhone Duo ships on October 23, 2026; if you have one, tell us how TonalEnergy Tuner & Metronome looks — a screenshot helps.
Latest release notes
Version 2.4.5 · Aug 29, 2026
New Features: • Added Drone After Delay option to Auto-Tone Tracker. Enable it from new options by long-pressing the auto-tone-tracker button (mic with 8th notes button). This allows you to hear your own sound before hearing the automatic drone(s) which is a valuable practice technique. Some of the options also allow for continuing the drone during legato play, and only causing it to change notes when you sustain a pitch long enough. • Added many new remote control commands, including ones that can make use of sliders/knobs • Have internal sound recording button in sidebar on all pages • Added MIDI pitch bend allowed option and bend range control Fixes: • Fixed issue with Sustain toggle remote control command from the last update • Fixed count-in issue when polyrhythm is enabled, now only use primary rhythm for count-in • Fixed slide out mixer system volume adjustability issue • Fixed remote control temperament toggle screen update • Fixed layout issues with slide-down met tempo wheel
Questions
Does TonalEnergy Tuner & Metronome work on iPhone Duo?
Not confirmed yet. TonalEnergy Tuner & Metronome runs normally on iPhone Duo's outer display, but there's no reliable report yet of how it looks on the inner display.
Does TonalEnergy Tuner & Metronome work on the outer display?
Yes. iPhone Duo's 5.4-inch outer display behaves like a regular iPhone screen, so every iPhone app works there as usual.
Can I use TonalEnergy Tuner & Metronome in Split View on iPhone Duo?
Yes. On iPhone Duo every app can be placed side by side with another app on the inner display — developers don't need to opt in. How comfortable it feels at half width depends on the app's layout.
Will TonalEnergy Tuner & Metronome have black bars on iPhone Duo?
It depends on the version of Apple's SDK the current build of TonalEnergy Tuner & Metronome uses: iOS 26 or earlier means black bars, iOS 27 means mostly filled, iOS 27.1 means full screen. We'll update this page as soon as there's evidence.