Koubou: App Store Screenshot Generator

Generate professional App Store screenshots using HTML/CSS templates with 100+ real device frames, xcstrings localization, and pixel-perfect Apple dimensions.

Screenshots are advertisements, not documentation. Each slide sells one feeling, outcome, or pain-point solution.

User instructions always take priority over defaults in this skill.

Creative direction is open by default. Use the rules in this skill to enforce impact, readability, and canvas-aware scale, not to make every set look the same.

Rule Hierarchy

Treat the guidance in this skill in this order:

1. Hard constraints — readability, scale, thumbnail clarity, truthful product marketing, and real canvas awareness
2. Strong defaults — variety, asymmetry, overlap, rhythm, and avoiding generic layouts
3. Taste preferences — anti-slop heuristics and stylistic defaults that can be broken when a stronger idea clearly improves the work

If breaking a default produces a better screenshot set, break it deliberately and explain the tradeoff to yourself before generating.