Name: app-store-screenshots
Author: halt-catch-fire

App Store and Google Play screenshot creation with exact platform specs. Covers iOS/Android dimensions, gallery ordering, device mockups, and preview videos. Use for: app store optimization, ASO, app screenshots, app preview, play store listing. Triggers: app store screenshots, aso, app store optimi

Install the belt CLI skill: npx skills add belt sh/cli App Store Screenshots Create app store screenshots and preview videos via [inference.sh](https://inference.sh) CLI. Quick Start Requires inference.sh CLI ( belt ). [Install instructions](https://raw.githubusercontent.com/inference sh/skills/refs/heads/main/cli install.md) Platform Specifications Apple App Store (iOS) Device Dimensions (px) Required iPhone 6.7" (15 Pro Max) 1290 x 2796 Required iPhone 6.5" (11 Pro Max) 1284 x 2778 Required iPhone 5.5" (8 Plus) 1242 x 2208 Optional iPad Pro 12.9" (6th gen) 2048 x 2732 If iPad app iPad Pro 11" 1668 x 2388 If iPad app Up to 10 screenshots per localization First 3 screenshots are visible without scrolling (critical) Formats: PNG or JPEG (no alpha/transparency for JPEG) Google Play Store (Android) Spec Value Min dimensions 320 px (any side) Max dimensions 3840 px (any side) Aspect ratio 16:9 or 9:16 Max screenshots 8 per device type Formats PNG or JPEG (24 bit, no alpha) Feature graphic: 1024 x 500 px (required for featuring) Promo video: YouTube URL (optional but recommended) The First 3 Rule 80% of App Store impressions show only the first 3 screenshots (before the user scrolls). These three must: 1. Communicate the core value proposition 2. Show the best feature/outcome 3. Differentiate from competitors Screenshot Gallery Order Position Content Purpose 1 Hero — core value, best feature Stop the scroll, communicate what the app does 2 Key differentiator What makes you unique vs competitors 3 Most popular feature The thing users love most 4 Social proof or outcome Ratings, results, testimonials 5 8 Additional features Supporting features, settings, integrations 9 10 Edge cases Specialized features for niche users Screenshot Styles 1. Device Frame with Caption The standard: device mockup showing the app, caption text above/below. 2. Full Bleed UI (No Device Frame) The app UI fills the entire screenshot. Works for immersive apps. 3. Lifestyle Context The device shown in a real world context (person holding phone, on desk, etc.). 4. Feature Highlight with Callouts UI screenshot with arrows/circles pointing to specific features. Caption Writing Rules Max 2 lines of text Benefit focused , not feature focused 30pt+ equivalent font size (must be readable in store) Examples Generating Screenshots Hero Screenshot (Position 1) Feature Highlight Lifestyle Context Before/After Preview Videos Apple App Store Spec Value Duration 15 30 seconds Orientation Portrait or landscape (match app) Audio Optional (loops silently in store) Format H.264, .mov or .mp4 Google Play Spec Value Source YouTube URL Duration 30s 2min recommended Orientation Landscape preferred Preview Video Structure Segment Duration Content Hook 0 3s Show the core outcome/wow moment Feature 1 3 10s Demonstrate top feature in action Feature 2 10 18s Second key feature Feature 3 18 25s Third feature or social proof CTA 25 30s End screen with app icon Localization Each language gets its own set of screenshots. Priorities: Market Localization Level Primary markets Full: new screenshots + translated captions Secondary markets Translated captions, same screenshots Other English defaults Key localization markets: English, Japanese, Korean, Chinese (Simplified), German, French, Spanish, Portuguese (Brazilian) A/B Testing (Google Play) Google Play Console supports store listing experiments: Test different screenshot orders Test with/without device frames Test different captions Test different color schemes Run for 7+ days with 50%+ traffic for significant results Common Mistakes Mistake Problem Fix Settings screen as screenshot Nobody cares about settings Show core value, not infrastructure Onboarding flow screenshots Shows friction, not value Show the app in use state Too much text Unreadable in store Max 2 lines, 30pt+ font Wrong dimensions Rejected by store Use exact platform specs All screenshots look the same No reason to scroll Vary composition and content Feature focused captions Doesn't communicate benefit "Never Miss a Deadline" "Push Notifications" Outdated UI Looks abandoned Update screenshots with each major release No hero screenshot Weak first impression Position 1 = your best shot Checklist [ ] Correct dimensions for target platform [ ] First 3 screenshots communicate core value [ ] Captions are benefit focused, max 2 lines [ ] No onboarding or settings screens [ ] Preview video is 15 30s with hook in first 3s [ ] Localized for top markets [ ] Feature graphic (1024x500) for Google Play [ ] Screenshots updated for current app version [ ] A/B test variant prepared Related Skills Browse all apps: belt app list