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A field guide to the /form-mobile skill

AI Mobile App Screen Design

Mobile screens need platform conventions. /form-mobile designs iOS and Android screens following HIG and Material with layout, navigation, and gesture spec.

Form · Visual Design6 min readDecember 25, 2025

Mobile screens designed without platform conventions feel wrong on at least one platform. The team that designs in iOS conventions and ports to Android ends up with an Android app that does not match Material; the reverse produces an iOS app that does not match HIG. Both produce friction the user feels.

The /form-mobile skill designs iOS and Android screens following platform conventions: HIG for iOS, Material Design for Android. Layout, content hierarchy, component usage, navigation patterns, gesture interactions, and platform-specific considerations per screen. Output is a design spec that /touch-feature can implement.

Tonone's /form-mobile skill designs mobile screens following iOS HIG and Android Material conventions.

Install

/form-mobile ships with the Form agent in Tonone for Claude Code.

1. Add to marketplace

$ claude plugin marketplace add tonone-ai/tonone

2. Install Form

$ claude plugin install form@tonone-ai

Frequently asked questions

What does /form-mobile do?
It designs iOS and Android screens following HIG and Material conventions with layout, navigation, and gestures specified.
How do I install /form-mobile?
Install Tonone for Claude Code via tonone.ai/get-started.

Pairs well with