Health & Fitness v4.16.1
Does LADDER Strength Training Plans work on iPhone Duo?
Yes. LADDER Strength Training Plans is built for iPhone Duo — it runs full screen on the 7.6-inch inner display and adapts its layout for the fold.
At a glance
- Inner display (7.6″)
- Built for Duo
- Outer display (5.4″)
- Works normally
- Built with
- Not read yet
- We read each app's build SDK after it updates
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v4.16.1
- Oct 30, 2026
- Duo in release notes
- Not yet
About LADDER Strength Training Plans
LADDER Strength Training Plans is made by Ladder Technologies, Inc. and first came out on the App Store in June 2020. It's #54 on today's US App Store top charts. It has 216,975 ratings on the US App Store, averaging 5 stars. Version 4.16.1 came out on Oct 30, 2026 and needs iOS 18.0 or later. It's free to download. Among the 27 health & fitness apps we track on the US App Store, 9 already fill the inner display, 4 are partly adapted and 14 still show black bars. By number of ratings, LADDER Strength Training Plans is #16 of them.
From its App Store listing:
Try Ladder COMPLETELY FREE for 7 days. NO PAYMENT collected during trial. LADDER IS THE #1 APP FOR STRENGTH TRAINING Apple's 2025 App of the Year Finalist Apple's Editors Choice Award Women's Health 2026 Best Overall CNET 2026 Best Strength Training App Ladder gives you a structured, coach-built workout plan for every day — new each week, easy to follow, and designed for home or gym. No more guess…
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 LADDER Strength Training Plans. 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 Store,
App Store listing has screenshots made for iPhone Duo
The developer published 8 screenshots for iPhone Duo’s inner display.
- : Not confirmed yet → Built for Duo — its App Store listing has iPhone Duo screenshots
Latest release notes
Version 4.16.1 · Oct 30, 2026
This version includes the following: • Introducing an expanded edit workout. Now you can fully customize your workout before it begins. Are you regularly doing the same block, create your own block and save it to quickly readd it your next workout. • Not only do we want you to get the best workout, but let's have a little fun. Introducing Ladder Pumpkin Carving. Share your best pumpkin during SPOOKY Season. Love Ladder Teams? We would love to hear from you! Rate and review us in the App Store or drop us a note at hello@joinladder.com!
Questions
Does LADDER Strength Training Plans work on iPhone Duo?
Yes. LADDER Strength Training Plans is built for iPhone Duo — it runs full screen on the 7.6-inch inner display and adapts its layout for the fold.
Does LADDER Strength Training Plans 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 LADDER Strength Training Plans 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.