50 Popular Apps Reverse-Engineered into Claude-Readable Design Specs: Key Patterns for UI Cloning
u/meliwat spent weeks reverse-engineering 50 popular apps into structured markdown design specs and fed them to Claude to rebuild the UIs. The difference between near-perfect clones and drifting outputs came down to a few concrete practices observed at volume.
What Made Claude Nail UI Clones
- Exact values, not ranges.
#1A1A1Aworks. "dark gray" produces five different grays across five screens. - State coverage up front. Listing every state (empty, loading, error, filled) stopped Claude from inventing its own.
- Spacing as a scale, not per-element pixels. A 4/8/16/24 spacing system produced more consistent layouts than annotating every gap.
- Navigation as a graph. Explicit screen-to-screen transitions killed the "where does this button go" guessing.
What Didn't Help
Longer prose. Past a point, more words made the output worse, not better. Keep specs concise.
Available Resources
The entire collection is open-sourced on GitHub at github.com/Meliwat/awesome-ios-design-md. Each app ships with 3 spec depths: quick reference, standard build, or full pixel-level clone. All markdown, MIT license, no dependencies.
Community Question
The author asks: if you've done UI cloning with Claude, what patterns have you found that are missing from this list? Which apps are worth adding next?
📖 Read the full source: r/ClaudeAI
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