# App Store Screenshots

> Create App Store and Google Play screenshots with exact platform specs. Covers iOS/Android dimensions, gallery ordering, device mockups, captions, preview videos, localization, and A/B testing. Use when: app store screenshots, ASO, app preview, store listing, app mockup.

- **Type:** Skill
- **Install:** `agentstack add skill-juanmarchetto-agent-skills-app-store-screenshots`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [JuanMarchetto](https://agentstack.voostack.com/s/juanmarchetto)
- **Installs:** 0
- **Category:** [Web & Browser](https://agentstack.voostack.com/c/web-and-browser)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [JuanMarchetto](https://github.com/JuanMarchetto)
- **Source:** https://github.com/JuanMarchetto/agent-skills/tree/main/skills/app-store-screenshots
- **Website:** https://github.com/JuanMarchetto/agent-skills

## Install

```sh
agentstack add skill-juanmarchetto-agent-skills-app-store-screenshots
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# App Store Screenshots

Create app store screenshots and preview videos via [inference.sh](https://inference.sh) CLI.

## Quick Start

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

```bash
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:

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        |   "Push Notifications" |
| Outdated UI | Looks abandoned | Update screenshots with each major release |
| No hero screenshot | Weak first impression | Position 1 = your best shot |

## Important

AI-generated images (via inference.sh) produce **marketing mockups**, not real app screenshots. For actual screenshots of your running app, use [maestro-mobile-testing](https://github.com/JuanMarchetto/maestro-mobile-testing) or [playwright-recording](https://github.com/JuanMarchetto/playwright-recording-skill) to capture real screens, then use this skill for framing, captions, and store optimization.

## Example Output

```
App Store Screenshot Set Generated:
- hero-iphone15pro.png (1290x2796) — "Track Your Habits Effortlessly"
- feature-calendar.png (1290x2796) — "See Your Week at a Glance"
- social-proof.png (1290x2796) — "Join 50,000+ Users"
- ipad-pro.png (2048x2732) — "Beautiful on Every Screen"
- feature-graphic.png (1024x500) — Google Play feature graphic
```

## Error Handling

- **Wrong dimensions**: Check platform specs table above — App Store and Play Store have different requirements
- **Store rejection**: Common causes: transparency in JPEG (use PNG), text too small (30pt+ minimum), screenshots show non-final UI
- **AI mockup looks generic**: Add specific details to the prompt (your app's actual color scheme, specific screen content, real feature names)

## 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

```bash
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
```

Browse all apps: `infsh app list`

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [JuanMarchetto](https://github.com/JuanMarchetto)
- **Source:** [JuanMarchetto/agent-skills](https://github.com/JuanMarchetto/agent-skills)
- **License:** MIT
- **Homepage:** https://github.com/JuanMarchetto/agent-skills

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-juanmarchetto-agent-skills-app-store-screenshots
- Seller: https://agentstack.voostack.com/s/juanmarchetto
- Browse the marketplace: https://agentstack.voostack.com/browse

---
Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.