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Harvard Business Review

Harvard Business ReviewBusiness

On iPhone Duo

Letterboxed

Harvard Business Review runs in an iPhone-sized window with black bars.

Want Harvard Business Review to fill the inner display? Be the first to vote.

Its latest version is built with the iOS 26.5 SDK,[1] which Apple shows letterboxed on the inner display.[2]

How we know
From the app’s build
Checked on
Version 39.4.0
Build
iOS 26.5 SDK
Latest version
39.4.0, Oct 17, 2026
Status updated

What owners report

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Version history

  1. Version 39.4.0Letterboxed

    iOS 26.5 SDK

    Checked Nov 5, 2026

Sources

  1. App Store build, version 39.4.0

    Built with the iOS 26.5 SDK. Uses none of Apple’s iPhone Duo APIs.

  2. Apple Developer: Prepare your app for iPhone Duo