AppScreen

AppScreen is a free editor that runs in the browser and turns raw app captures into polished screenshots for the App Store and Google Play. Drop in your captures, place them in iPhone or Android device frames, add captions and gradient or solid backgrounds, and lay every slide out on one wide canvas so a phone or headline can run across the seam between two slides. Export gives you one PNG per slide at the exact store sizes. No account needed to start, and your work saves locally. The free plan covers iPhone and Android phone frames, 3 projects and 5 slides each. Pro is a one-time $9 for tablet frames (iPad and Android), more slides, patterns, cloud projects and an MCP server for AI agents.