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VirtuNum

Morteza SalmanpourUtilities

View in the App Store
On iPhone Duo

Letterboxed

VirtuNum runs in an iPhone-sized window with black bars.

Want VirtuNum to fill the inner display? Be the first to vote.

Its latest version is built with the iOS 18.4 SDK,[1] which Apple shows letterboxed on the inner display.[2]

How we know
From the app’s build
Checked on
Version 2.7.7
Build
iOS 18.4 SDK
Latest version
2.7.7, Jul 24, 2025
Status updated

What owners report

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Version history

  1. Version 2.7.7Letterboxed

    iOS 18.4 SDK

    Checked Nov 5, 2026

Sources

  1. App Store build, version 2.7.7

    Built with the iOS 18.4 SDK. Uses none of Apple’s iPhone Duo APIs.

  2. Apple Developer: Prepare your app for iPhone Duo
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