Does Running Tracker App work on iPhone Duo?

Yes. Running Tracker App is updated for iPhone Duo and uses the full inner display. Version 9.9.4 (October 9) release notes: “Optimized for iPhone Duo”

Is Running Tracker App letterboxed on iPhone Duo?

No. Running Tracker App fills the inner display.

All apps

Running Tracker App

Name: Running Tracker App – FITAPP
Author: FITAPP GmbH

FITAPP GmbHUtilities

View in the App Store

On iPhone Duo

Fits

Running Tracker App fills the inner screen and adapts when you fold.

Version 9.9.4 (October 9) release notes: “Optimized for iPhone Duo”[1]

How we know: Claimed by the developer
Latest version: 9.10.0, Oct 15, 2026
Status updated: Oct 18, 2026

What owners report

No reports from owners yet. Add yours

Sources

App Store: FITAPP 9.9.4 release notes

Have an iPhone Duo?

Tell us what Running Tracker App looks like on yours.

Fits

What owners report

Sources

Other Utilities apps