Warline has Apple's Made for iPhone Duo badge: version 1.4.04 ships iPhone Duo screenshots for the cover screen. Checked automatically on Nov 10, 2026.
The developer's iPhone Duo screenshots
From the App Store listing. They show what the developer designed, not a test.
How the status was checked
- Automatic check
- Every day, from Apple's App Store data: the version, its date, and whether the listing has screenshots made for the Duo.
- Duo screenshots
- For the cover screen only. That doesn't mean it fails open; the developer just didn't upload inner-screen ones.
- Hand test
- Not tested on a real iPhone Duo yet. A hand test covers five postures: cover, open, laptop, book and tent. How we test
Apple's badge comes from the Duo screenshots on the App Store listing. It says the developer designed for the Duo; it says nothing about laptop, book or tent mode.
Version and badge history
First checked , version 1.4.04. Nothing has changed since.