iPhone Duo App Store Screenshot Size Guide
Find the exact inner and outer dimensions, compare iPhone and iPad requirements, and prepare separate captures for a free PNG export.
Read guide →iPhone Duo for app developers
Adapting an existing app, choosing screenshot dimensions, or preparing a release? Start with the guide for your task, then create the matching assets.
Specifications are published. Dedicated Duo asset uploads are planned for later in 2026. Apple release notes ↗
iPhone Duo Design Guidelines: From Adaptive UI to App Store Screenshots
Apply Apple’s UI guidance, learn from its Mail and Notes examples, and build a consistent marketing screenshot set for each display.
Read guide →How to Adapt Your App for iPhone Duo: A Practical Migration Guide
A step-by-step adaptation plan for an existing app, from the first simulator run to verified inner and outer display captures.
Read guide →iPhone Duo UI Testing Checklist: From Adaptive Layout to Store Screenshots
A repeatable capture and QA plan that catches the difference between correct output pixels and a correctly adapted app.
Read guide →Turn your Duo captures into store assets.
Use editable templates, exact platform presets, custom copy, and local ZIP export.
Try our free screenshot maker →Need conventional iPhone or iPad sizes? Open the App Store generator →