Does Bible Study App by Olive Tree work on iPhone Duo?

Yes. Bible Study App by Olive Tree is updated for iPhone Duo and uses the full inner display. Its latest version is built with the iOS 27.1 SDK and uses Apple’s iPhone Duo APIs.

Is Bible Study App by Olive Tree letterboxed on iPhone Duo?

No. Bible Study App by Olive Tree fills the inner display.

All apps

Bible Study App by Olive Tree

Name: Bible Study App by Olive Tree
Author: Gospel Technologies LLC

Gospel Technologies LLCEducation

View in the App Store

On iPhone Duo

Fits

Bible Study App by Olive Tree fills the inner screen and adapts when you fold.

Its latest version is built with the iOS 27.1 SDK and uses Apple’s iPhone Duo APIs.[1]

How we know: From the app’s build
Checked on: Version 8.1.5
Build: iOS 27.1 SDK
uses Apple’s iPhone Duo APIs
Latest version: 8.1.5, Oct 26, 2026
Status updated: Oct 29, 2026

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Version history

Version 8.1.5Fits
iOS 27.1 SDK
Checked Oct 29, 2026

Sources

App Store build, version 8.1.5
Built with the iOS 27.1 SDK. Uses UIHingeInteraction and UIViewReservedRegionKind.