Frequently asked questions

Does it work on other phones?

No. Duo is made for the Samsung Galaxy Z Fold8 and is only listed for it. Every measurement, gesture and overlay is tuned to the Fold8's inner and cover screens.

Why does Duo ask for Display over other apps and Usage access?

The bars under each side and the dock are small windows over other apps; Android needs your permission for that once. Usage access tells Duo which app is in front so it can step aside for apps that refuse overlays. Duo reads only the name of the app in front, and nothing leaves the phone.

Why is there a notification?

Android requires anything drawn over other apps to show one while it runs. Duo's is silent and opens the launcher.

Does the Home gesture close both sides?

Android's own gesture does. Turn on "Ignore the system Home swipe while unfolded" and Duo puts the apps back where they were. Each side also has its own bar: pull it and only that side goes Home.

What is the Duo Google Companion?

A small free helper you install once so Google Discover can open over Home. Google serves its feed only to system and debuggable apps, so Duo uses the companion instead.

What happens when the trial ends?

Play charges the yearly price unless you cancelled. Without a subscription the start screen replaces Home, but every app stays reachable from it and you can switch Home apps.

What is the Backup Studio on this site?

An optional web tool for Duo's backup files. It checks a duo-backup.json for problems, migrates older backup versions to the current format, and builds starter layouts you restore on the phone. The launcher itself never talks to it; you choose what to upload, and deleting a job deletes its files.