App Store Screenshots

Create app store screenshots and preview videos via inference.sh CLI.

Quick Start

Requires inference.sh CLI (infsh ). Get installation instructions: npx skills add inference-sh/skills@agent-tools

infsh login

Generate a device mockup scene

infsh app run falai/flux-dev-lora --input '{ "prompt": "iPhone 15 Pro showing a clean modern app interface with analytics dashboard, floating at slight angle, soft gradient background, professional product photography, subtle shadow, marketing mockup style", "width": 1024, "height": 1536 }'

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:

• Communicate the core value proposition

• Show the best feature/outcome

• 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.

┌──────────────────────────┐ │ "Track Your Habits │ ← Caption (benefit-focused) │ Effortlessly" │ │ │ │ ┌──────────────────┐ │ │ │ │ │ │ │ App Screen │ │ ← Actual app UI in device frame │ │ Content │ │ │ │ │ │ │ │ │ │ │ └──────────────────┘ │ │ │ └──────────────────────────┘

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

❌ Feature-focused: "Push Notification System" "Calendar View with Filters" "Data Export Functionality"

✅ Benefit-focused: "Never Miss a Deadline Again" "See Your Week at a Glance" "Share Reports in One Tap"

Generating Screenshots

Hero Screenshot (Position 1)

Clean device mockup with hero feature

infsh app run falai/flux-dev-lora --input '{ "prompt": "modern iPhone showing a beautiful fitness tracking app with activity rings and workout summary, device floating at slight angle against soft purple gradient background, professional product shot, clean minimal composition, subtle reflection", "width": 1024, "height": 1536 }'

Feature Highlight

Feature callout style

infsh app run bytedance/seedream-4-5 --input '{ "prompt": "app store screenshot style, iPhone showing a messaging app with AI writing suggestions highlighted, clean white background, subtle UI callout arrows, professional marketing asset, modern design", "size": "2K" }'

Lifestyle Context

Device in real-world setting

infsh app run falai/flux-dev-lora --input '{ "prompt": "person holding iPhone showing a cooking recipe app, kitchen background with ingredients, warm natural lighting, over-the-shoulder perspective, lifestyle photography, authentic feeling", "width": 1024, "height": 1536 }'

Before/After

Split comparison

infsh app run infsh/stitch-images --input '{ "images": ["before-screenshot.png", "after-screenshot.png"], "direction": "horizontal" }'

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

Generate preview video scenes

infsh app run google/veo-3-1-fast --input '{ "prompt": "smooth screen recording style, finger tapping on a modern mobile app interface, swiping between screens showing charts and data visualizations, clean UI transitions, professional app demo" }'

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

npx skills add inference-sh/skills@ai-image-generation npx skills add inference-sh/skills@ai-video-generation npx skills add inference-sh/skills@image-upscaling npx skills add inference-sh/skills@prompt-engineering

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