Overview
- Two weeks after the iPhone Duo went on sale, Apple said the App Store hosts well over 100,000 apps built for the device, with thousands more added each day.
- Apple defines “built for iPhone Duo” as apps compiled with the iOS 27.1+ tools so they fill the Duo’s inner and outer displays and move vertical controls into the status bar.
- Despite the milestone, user experience remains uneven because many high‑profile apps still run in narrow centered windows or show black sidebars rather than full Duo layouts.
- Apple has run more than 50 in‑person developer workshops attended by over 2,000 developers and is sending buyer surveys as it rolls out iOS 27.x updates to address crease, camera and app issues.
- Hardware strains persist: demand and low production yields have pushed ship dates into 2027, some owners reported hinge‑area inner‑display cracks, and reviewers flagged the Duo’s 254 g weight and 4MP under‑display front camera.