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iPhone Duo goes on sale Oct 23, 2026. Developers are likely to update their apps then, so statuses are for reference until launch.

Release day, your time18:22:19

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Toolbox Pro for Shortcuts

Snailed It Development LtdUtilities

View in the App Store
On iPhone Duo

Letterboxed

Toolbox Pro for Shortcuts runs in an iPhone-sized window with black bars.

Its latest version is built with the iOS 26.0 SDK,[1] which Apple shows letterboxed on the inner display.[2]

How we know
From the app’s build
Checked on
Version 2026.2.1
Build
iOS 26.0 SDK
Latest version
2026.2.1, Feb 26, 2026
Status updated

What owners report

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Version history

  1. Version 2026.2.1Letterboxed

    iOS 26.0 SDK

    Checked Oct 22, 2026

Sources

  1. App Store build, version 2026.2.1

    Built with the iOS 26.0 SDK. Uses none of Apple’s iPhone Duo APIs.

  2. Apple Developer: Prepare your app for iPhone Duo
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