Tianjin Chuangshi Xinghui Technology Co., Ltd.
Music v2.1.1
Does 海马畅听-小说电子书随身听 work on iPhone Duo?
It works, but with black bars. 海马畅听-小说电子书随身听 2.1.1 is built with the iOS 26.5 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- iOS 26.5 SDK
- Version 2.1.1, read Nov 3, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v2.1.1
- Oct 16, 2026
- Duo in release notes
- Not yet
About 海马畅听-小说电子书随身听
海马畅听-小说电子书随身听 is made by Tianjin Chuangshi Xinghui Technology Co., Ltd. and first came out on the App Store in July 2026. It has 16 ratings on the US App Store, averaging 3.7 stars. Version 2.1.1 came out on Oct 16, 2026 and needs iOS 14.0 or later. It's free to download.
From its App Store listing:
【海马畅听】—— 听有声小说的神器，海量内容免费听！ 【听书就用听书神器】 海量有声小说，真人主播朗读，沉浸式体验。 【收音机随时听广播】 内置收音机功能，全国电台随心听，新闻、音乐、脱口秀、情感故事......想听什么就听什么。 【免费听书内容多多】 更多精彩内容，免费畅享。百万本有声书，总有一本适合你。 【为什么选择海马畅听】 内容丰富：百万本有声书，持续更新。 完全免费：所有内容免费听，无需会员。 音质清晰：高清无损音质，沉浸式体验。 操作简单：界面简洁，老人小孩都会用。 立即下载，体验最好的听书神器！
On the inner display
Apps built with older SDKs are placed in a phone-sized safe area on a black background. Everything works; you just don't get the bigger screen.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including 海马畅听-小说电子书随身听. Open it on the inner display, then add a second app next to it. You can save the pair and come back to it later.
Duo-specific features
None confirmed yet. Duo-specific features include side toolbars, layouts that react to the fold, and content on the outer display while the app is open inside.
Evidence & history
App build,
Version 2.1.1 is built with the iOS 26.5 SDK
Apple runs apps built with the iOS 26 SDK or earlier in a phone-sized window on the inner display.
- : Not confirmed yet → Black bars — built with the iOS 26.5 SDK
Latest release notes
Version 2.1.1 · Oct 16, 2026
优化体验
Questions
Does 海马畅听-小说电子书随身听 work on iPhone Duo?
It works, but with black bars. 海马畅听-小说电子书随身听 2.1.1 is built with the iOS 26.5 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does 海马畅听-小说电子书随身听 work on the outer display?
Yes. iPhone Duo's 5.4-inch outer display behaves like a regular iPhone screen, so every iPhone app works there as usual.
Can I use 海马畅听-小说电子书随身听 in Split View on iPhone Duo?
Yes. On iPhone Duo every app can be placed side by side with another app on the inner display — developers don't need to opt in. How comfortable it feels at half width depends on the app's layout.
Why does 海马畅听-小说电子书随身听 have black bars on iPhone Duo?
Apps built with the iOS 26 SDK or earlier run in a phone-sized window on the inner display, and iOS 27 builds can still leave some space empty. The bars disappear once the developer rebuilds the app with the iOS 27.1 SDK — you only need to update the app.
When will 海马畅听-小说电子书随身听 fill iPhone Duo's inner display?
When its developer releases an update built with the iOS 27.1 SDK or later. We read the SDK of every new version of 海马畅听-小说电子书随身听 within about a day of its release and update this page.
What can I do about the black bars until then?
Use 海马畅听-小说电子书随身听 on the outer display, where it works like on any iPhone, or put it in Split View next to another app on the inner display so less of the screen goes unused.