I've been testing dozens of iPhone Duo apps -- here's my top 15 picks so far

After a week testing Apple’s iPhone Duo, the author highlights how foldable-first app design makes the device stand out—especially on its 7.6-inch screen. They say developers have optimized for two-column layouts and dedicated “Cover Display” behavior, using examples like Netflix, where playback controls appear in the bottom half in “seated” mode. The piece ranks 15 favorite apps so far, led by Slack, which places rooms and contacts on the left and messages on the right, and keeps controls on the right side. Other picks include TikTok for split viewing across portrait and landscape cover modes, UnGodly for full use of the A20 chip and large display, and Instagram with immersive front-display video and comment loading on the right. The article is excerpted before finishing the full list.