Doubao Has Adapted to iPhone Duo, but Only 440 of 2,841 Apps Have Caught Up

Doubao has also completed adaptation for iPhone Duo. Guizang (guizang.ai) shared real-device screenshots on X. On the unfolded screen, the left side is a menu bar and the right side is a Doubao conversation, recommending unpaved-road hiking routes around Beijing and also mentioning coupons for spending 300 to get 40 off and spending 7,000 to get 910 off. The interface spreads out fully; it is not simply enlarged.

Previously, he recorded a video showing how AI apps are recognized on iPhone Duo. In the video, icons for apps such as WeChat, QQ, and Weibo float above the phone, wrapped in transparent bubbles, waiting to be recognized and adapted.

iPhone Duo is Apple's foldable phone; when unfolded, the screen becomes larger. Apps need dedicated adaptation to make use of this screen; otherwise they may just stretch and leave black bars on both sides.

How is adaptation progressing? You can't look only at Doubao. A netizen named xiaoxin built an independent tracking website, DuoTracker, specifically to track app adaptation status. On the site, you can search for commonly used apps and check their adaptation status in the Chinese, US, and Japanese stores. As of October 26, the Chinese store had listed 2,841 apps: 440 adapted, 3 partially adapted, and 2,385 pending verification, for an adaptation rate of 15.6%. Doubao, Taobao, Alipay, Amap, JD.com, Xiaohongshu, and Youku have been confirmed adapted. Douyin, WeChat, Pinduoduo, CapCut, and others are still on the pending-verification list.

Some netizens said that Douyin and WeChat have not yet been adapted. Others said that even recognition for foldables has to be tested separately, and the adaptation hurdle is more troublesome than expected. Others wondered whether apps will reload when the screen is unfolded.

The most interesting part was a netizen named wcg8904 doing the math: the biggest pitfall of foldables has never been hardware; it's software failing to keep up. If apps still display according to phone proportions, that's no different from buying an expensive brick. At a $1999 price, what you're really buying is developers' adaptation speed. It's only worth it if adaptation keeps up; if not, you're paying the "idiot tax."

The logic isn't complicated. The hardware form factor of foldables is already there; what really determines the daily experience is whether apps can make use of the unfolded screen. One netizen put it more plainly: on-device adaptation affects daily use more than spec-sheet rankings; being able to fit reliably into a phone-based workflow is more useful than having multiple web-view windows.

Doubao has already handed in its exam paper. Other apps are still on the way. Whether the iPhone Duo experience is worth it depends on how fast developers catch up.