Finance v9.10.34
Does Kalshi work on iPhone Duo?
Yes. Kalshi runs full screen on iPhone Duo's inner display, though it doesn't have Duo-specific features yet.
At a glance
- Inner display (7.6″)
- Full screen
- Outer display (5.4″)
- Works normally
- Built with
- Not read yet
- We read each app's build SDK after it updates
- iPad version
- No
- Phone-only layout today
- Latest version
- v9.10.34
- Nov 3, 2026
- Duo in release notes
- Not yet
About Kalshi
Kalshi is made by KalshiEX LLC and first came out on the App Store in September 2022. It's #6 on today's US App Store top charts. It has 662,539 ratings on the US App Store, averaging 4.8 stars. Version 9.10.34 came out on Nov 3, 2026 and needs iOS 15.0 or later. It's free to download. Among the 25 banking & finance apps we track on the US App Store, 8 already fill the inner display, 4 are partly adapted and 12 still show black bars. By number of ratings, Kalshi is #17 of them.
From its App Store listing:
Kalshi is the largest federally regulated prediction market app in the U.S., where you can make money by predicting real-world events, including football, basketball, hockey, and other sports, plus crypto prices. Perfect for sports, crypto, and event trading, forecasting, futures-style markets, and real-world predictions. It’s like trading stocks – but instead, you trade on events you understand. …
On the inner display
The app reaches the edges of the inner display. Text and controls stay a comfortable size instead of being blown up.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Kalshi. 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 9.10.33 is built with the iOS 27.1 SDK
Apps built with the iOS 27.1 SDK or later can use the whole inner display.
- : Not confirmed yet → Full screen — built with the iOS 27.1 SDK
Latest release notes
Version 9.10.34 · Nov 3, 2026
Kalshi is America's #1 prediction market platform. Get in on the action by trading on real-world events like elections, sports, crypto, and weather. This update includes bug fixes and performance upgrades.
Questions
Does Kalshi work on iPhone Duo?
Yes. Kalshi runs full screen on iPhone Duo's inner display, though it doesn't have Duo-specific features yet.
Does Kalshi 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 Kalshi 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.