Health & Fitness · v9.1.60
Does Keep work on iPhone Duo?
Not confirmed yet. Keep runs normally on iPhone Duo's outer display, but there's no reliable report yet of how it looks on the inner display.
At a glance
- Inner display (7.6″)
- Not confirmed yet
- Outer display (5.4″)
- Works normally
- Split View
- Supported
- Every app, automatically
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v9.1.60
- Sep 21, 2026
- Duo in release notes
- Not yet
On the inner display
iPhone Duo shows each app in one of three ways depending on which SDK it was built with: letterboxed with black bars (iOS 26 or earlier), expanded with some empty space (iOS 27), or full screen (iOS 27.1 and later). We don't yet know which applies here.
Keep already ships an iPad version, so its layout already copes with larger screens. That gives its developer a head start on iPhone Duo's inner display, which reports the same regular size class as an iPad.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Keep. 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
No public evidence yet. iPhone Duo ships on October 23, 2026; if you have one, tell us how Keep looks — a screenshot helps.
Latest release notes
Version 9.1.60 · Sep 21, 2026
Keep 9.1 全新升级，越练，越懂，越健康 - AI 语音互动跑：边跑边聊，AI 在过程中给你反馈、提醒和鼓励，边跑边陪伴。 - 健身记录工具升级：支持记录健身房训练轻松记录，让力量训练更清晰。 - AI 深度数据解析：围绕吃、练、睡进行更全面的数据解读，帮你看懂身体状态与生活习惯的变化。 - 身体年龄解析：助你了解自己的身体状态，找到更适合自己的训练方向。 - 超级 AI 会员正式上线：从训练建议到数据洞察，更完整的 AI 运动服务，更智能、更个性化的运动支持。 Keep 9.1，不止运动，更陪你成为更健康的自己。
Questions
Does Keep work on iPhone Duo?
Not confirmed yet. Keep runs normally on iPhone Duo's outer display, but there's no reliable report yet of how it looks on the inner display.
Does Keep 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 Keep 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.
Will Keep have black bars on iPhone Duo?
It depends on the version of Apple's SDK the current build of Keep uses: iOS 26 or earlier means black bars, iOS 27 means mostly filled, iOS 27.1 means full screen. We'll update this page as soon as there's evidence.