Appshots Best Practices

App Store Screenshot Best Practices

Research-backed design guidelines for creating professional, high-converting App Store and Google Play screenshots.

Core Principle

Screenshots are advertisements, not documentation. Every screenshot sells one idea. If you're just showing UI, you're doing it wrong — you're selling a feeling, an outcome, or killing a pain point.

The 7-Second Rule

Users decide whether to download within 7 seconds and rarely scroll past the first 2–3 screenshots. Your first screenshots must instantly communicate value.

Copywriting (Write Copy FIRST)

Get all headlines approved before building layouts. Bad copy ruins good design.

The Iron Rules

1. One idea per headline. Never join two things with "and."
2. Short, common words. 1–2 syllables. No jargon unless domain-specific.
3. 3–5 words per line. Must be readable at thumbnail size in the App Store.
4. Max 2 lines total. Text should occupy less than 20% of the image area.
5. Line breaks are intentional. Control where lines break with \n.

Three Caption Approaches (pick one per slide)

What NEVER Works

• ❌ Feature lists as headlines: "Log items with tags, categories, and notes"
• ❌ Two ideas with "and": "Track X and never miss Y"
• ❌ Compound clauses: "Save and customize X for every Y you own"
• ❌ Vague aspirational: "Every item, tracked."
• ❌ Marketing buzzwords: "AI-powered tips" (unless it's actually AI)

Copy Process

1. Write 3 options per slide using the three approaches above
2. Arm's length test — if you can't parse it in 1 second, it's too complex
3. Check: does each line have 3–5 words? If not, adjust line breaks

CLI Implementation

# Benefits-focused, centered, short caption
appshots editor add-text \
  --text "Track Your Habits\nEffortlessly" \
  --font "Poppins" --size 90 \
  --color "#FFFFFF" \
  --y 80 --x 0 \
  --width 1290 --align center

Screenshot Narrative Flow

Slide Framework (Adapt to Your Slide Count)

Layout Variety Rules

• Never repeat the same layout structure on consecutive slides
• Include 1–2 contrast slides (inverted background) for visual rhythm
• Each slide sells ONE idea — never two features on one slide
• Vary phone position: centered, left-aligned, right-aligned, two-phone, no-phone

Screenshot Limits & Dimensions

Apple App Store (2025)

2025 change: Only 6.9" iPhone + 13" iPad are mandatory base sizes. Smaller sizes auto-scale.

Google Play Store

Google Play note: Google discourages device frames and excessive promotional text.

In-App Limits

The app supports a maximum of 10 design slots per multi-screenshot set.

Typography Rules

Size Ratios (Resolution-Independent)

Size text relative to the canvas width (W) for consistent scaling across resolutions:

Font Recommendations

Device Frame & Phone Placement

Frame Best Practices

• ✅ App Store: Use device frames — they add context and trust
• ⚠️ Google Play: Avoid device frames (Google discourages them)
• Use the latest device model for a modern look
• Keep consistent frame across all screenshots in a set

Phone Position Patterns

Vary these across slides — never use the same layout twice in a row:

3D Rotation (Subtle!)

Values are in radians, not degrees:

⚠️ 3.0 radians ≈ 172° = nearly upside down. Use 0.03–0.05 for subtle effects.

appshots editor set-rotation --x 0.03 --y -0.02 --z 0.01

Screenshot Position

Push down to make room for text:

# y = 250–350 depending on text length
appshots editor set-image-position --x 0 --y 280

Background & Color Design

Color Psychology

Visual Rhythm with Backgrounds

• Use dark backgrounds for most slides (converts better)
• Include 1–2 contrast slides with inverted/lighter backgrounds
• Create variety but maintain cohesion (same color family)

2025 Design Trends

• Dark mode dominance — white text on dark backgrounds
• Glassmorphism 2.0 — translucent layers with vibrant underlays
• Bold typography — fonts as branding, not just information
• Panoramic/continuous — backgrounds that flow across screenshots
• Minimalist + bold — clean with one strong accent

Translation & Localization

Localized screenshots can increase downloads by up to 4× (Apple's data).

Text Expansion by Language

Post-Translation Verification

Always verify every locale visually. This is the most critical step.

# Check worst offenders first
appshots translate preview --locale de    # German (longest)
appshots translate preview --locale ja    # CJK font check

# Fix issues
appshots translate override-overlay --locale de --overlay-id <id> --font-size 72
appshots translate override-overlay --locale ja --overlay-id <id> --font "Noto Sans JP"

# Clear and save
appshots translate preview --locale none
appshots multi save-design --name "My Screenshots" --override

Pre-Export Quality Checklist

• Arm's length test — every caption readable in 1 second?
• One idea per slide — no "and" joining two features?
• 3–5 words per line, benefits-focused?
• Layout varies across slides (no two consecutive same layout)?
• 1–2 contrast slides for visual rhythm?
• Consistent styling (padding, radius, frame, font)?
• Dark background with high-contrast text?
• All 10 slots used (maximize Store real estate)?
• All locales verified — especially German, French, CJK?
• No text overflow in any locale?
• Thumbnails look good (readable at small size in search)?

A/B Testing

Apple's Product Page Optimization lets you test up to 3 screenshot sets simultaneously. Test:

• Different hero screenshots (#1)
• Dark vs. light backgrounds
• Different caption approaches (paint a moment vs. kill a pain)
• Feature ordering

Track conversion rate changes to validate design decisions.

Common Mistakes