Does Next Sunny Day work on iPhone Duo?

Yes. Next Sunny Day is updated for iPhone Duo and uses the full inner display. The developer adapted the layout for iPhone Duo on October 12; version 2.0.1 followed on October 15.

Is Next Sunny Day letterboxed on iPhone Duo?

No. Next Sunny Day fills the inner display.

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Next Sunny Day

Name: Next Sunny Day
Author: Ryota Kobayashi

Ryota KobayashiUtilities

View in the App Store

On iPhone Duo

Fits

Next Sunny Day fills the inner screen and adapts when you fold.

The developer adapted the layout for iPhone Duo on October 12; version 2.0.1 followed on October 15.[1]

How we know: From the app’s source code
Latest version: 2.0.1, Oct 15, 2026
Status updated: Oct 20, 2026

What owners report

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Sources

GitHub: Next Sunny Day commit “Widen the panel to the fold when iPhone Duo is partially open”

Have an iPhone Duo?

Tell us what Next Sunny Day looks like on yours.

When unfolded, it…FitsFills the inner screenPartly fitsSome screens are letterboxedLetterboxediPhone-sized window with black barsHas issuesBugs or broken featuresDoesn’t workCrashes or can’t be used

Version OptionalShown on the app’s App Store page under Version History.

Screenshots OptionalAdd screenshotsOf the unfolded screen. Up to 4 images.

Anything else? Optional

Fits

What owners report

Sources

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