# Startup Skills: Karl Koch > Every skill by Karl Koch in the index, with a line saying when to use each one. I index these, I do not host them. Every entry points at the original author's repo and carries a source byline. ## Entries (7) - [AI output judgement](https://github.com/kemiljk/skills/blob/main/skills/ai-output-judgement/SKILL.md) by Karl Koch: Use when generated UI, copy or code needs a quality critique. - [Android native UI](https://github.com/kemiljk/skills/blob/main/skills/android-native-ui/SKILL.md) by Karl Koch: Use when building or reviewing Android interfaces in Compose or Views. - [Apple native UI](https://github.com/kemiljk/skills/blob/main/skills/apple-native-ui/SKILL.md) by Karl Koch: Use when building or reviewing native Apple interfaces, including macOS window behaviour. - [dxe](https://github.com/kemiljk/skills/blob/main/skills/dxe/SKILL.md) by Karl Koch: Use when a repository or UI surface needs a design engineering review. - [Fluid design](https://github.com/kemiljk/skills/blob/main/skills/fluid-design/SKILL.md) by Karl Koch: Use when springs, gestures or interruptible motion need physical continuity under direct manipulation. - [Humane functionalism](https://github.com/kemiljk/skills/blob/main/skills/humane-functionalism/SKILL.md) by Karl Koch: Use when a screen or flow needs a Danish functionalist design pass. - [Modern CSS & HTML](https://github.com/kemiljk/skills/blob/main/skills/modern-css-html/SKILL.md) by Karl Koch: Use when a legacy CSS or HTML workaround may have a native replacement. ## Links - [Page](https://startupskills.dev/kemiljk): the same list, for a person. - [The whole index](https://startupskills.dev/llms.txt): all 189 entries. - [Skills index](https://startupskills.dev/skills): every skill, with search.