Finance v2.0.127
Does Monarch work on iPhone Duo?
It works, but with black bars. Monarch 2.0.127 is built with the iOS 26.2 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 26.2 SDK
- Version 2.0.127, read Oct 30, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v2.0.127
- Oct 29, 2026
- Duo in release notes
- Not yet
About Monarch
Monarch is made by Monarch Money, Inc. and first came out on the App Store in November 2020. It has 116,966 ratings on the US App Store, averaging 4.9 stars. Version 2.0.127 came out on Oct 29, 2026 and needs iOS 15.1 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, Monarch is #21 of them.
From its App Store listing:
Consider Monarch your home base for money clarity. Simplify your finances by bringing all your accounts into one easy view, have confidence in always knowing where your money is and where it's going, and collaborate with your partner or financial professional to track, budget, and reach goals together. Monarch has been recognized by the Wall Street Journal as the “Best Budgeting App,” by Forbes as…
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 Monarch. 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 2.0.127 is built with the iOS 26.2 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 26.2 SDK
Latest release notes
Version 2.0.127 · Oct 29, 2026
- Integrations setup now lists Antigravity instead of the deprecated Gemini CLI. - Fixed a crash for new users when the keyboard opened during account setup. - Fixed the onboarding quiz sometimes staying on a spinner after you tapped Sign in. We're always improving Monarch to better support you! Keep an eye out for more updates and fixes along the way.
Questions
Does Monarch work on iPhone Duo?
It works, but with black bars. Monarch 2.0.127 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Monarch 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 Monarch 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 Monarch 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 Monarch 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 Monarch within about a day of its release and update this page.
What can I do about the black bars until then?
Use Monarch 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.