App Store Screenshots

App Store and Google Play screenshot creation with exact platform specs. Covers iOS/Android dimensions, gallery ordering, device mockups, and preview videos....

Security Scan

The skill's instructions and dependencies are coherent with creating store screenshots, but it directs installing and running a third‑party CLI (via a curl | sh installer and remote binaries from dist.inference.sh) from an unknown source — a proportionate capability but a notable installation/execution risk.

Purpose & Capability

Name and description match the runtime instructions: the SKILL.md describes creating App Store/Play screenshots and repeatedly shows commands that call the infsh CLI to generate images and stitch assets. No unrelated credentials, binaries, or config paths are requested.

Instruction Scope

The instructions are narrowly scoped to generating screenshots and preview videos (prompts for image generation, stitching images, size guidance, gallery ordering). However, they explicitly instruct installing and using the infsh CLI which will accept arbitrary prompts and inputs — that CLI may read or upload images you pass to it. The skill does not instruct reading unrelated local files or environment variables, but use of the external CLI expands runtime behavior beyond just locally creating images.

Install Mechanism

There is no internal install spec; SKILL.md tells the user to run curl -fsSL https://cli.inference.sh | sh. Piping a remote script to sh and downloading binaries from dist.inference.sh is a high-risk install pattern because arbitrary code/binaries are fetched and executed. The doc mentions SHA-256 checksum verification and a manual check URL, which helps if followed, but the skill does not enforce or automate verification — relying on user diligence. Also, the skill's source/homepage are unknown, increasing trust risk.

Credentials

The skill requests no environment variables, no credentials, and no config paths. That is proportionate for an instruction-only screenshot generation skill.

Persistence & Privilege

always is false and there's no install spec that writes persistent agent config. The skill does not request elevated privileges or persistent presence in the agent by itself.

Scan Findings in Context

[no_code_files_to_scan] expected: The regex scanner found nothing to analyze because this is an instruction-only skill (only SKILL.md). Absence of findings is expected but not an indication of safety; the SKILL.md itself instructs fetching and running external code.

What to consider before installing

This skill appears to do what it says (generate app screenshots) but it tells you to install and run a third‑party CLI fetched from the web. Before installing: (1) inspect the installer script at https://cli.inference.sh — do not run it blind; (2) verify the binary checksums manually against the published checksums; (3) prefer manual download of the binary and run it in a sandbox or disposable VM if possible; (4) avoid sending private or proprietary screenshots to remote services unless you trust their privacy policy; (5) check who controls the inference.sh/dist.inference.sh domains and look for a project homepage or source repo; (6) if you cannot verify the publisher/trust, use local image tools (Photoshop, Figma, local scripts) or vetted services instead.

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

Quick Start

curl -fsSL https://cli.inference.sh | sh && 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
}'

Install note: The install script only detects your OS/architecture, downloads the matching binary from dist.inference.sh, and verifies its SHA-256 checksum. No elevated permissions or background processes. Manual install & verification available.

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.

┌──────────────────────────┐
│   "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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