Problem
The session surface sets font-size: 14px (chat.css ~62) and uses px throughout, so it doesn't scale with the user's OS/browser text-size preference (Dynamic Type / Android font scale).
Suggested fix
Use rem-relative units for body text so the app honors user text-size settings.
Filed from a UI research sweep of the Helm mobile app (landing + live demo session) using Playwright + full source review, cross-referenced against Claude, ChatGPT, GitHub Copilot Chat, and Codex/Claude Code UIs.
Problem
The session surface sets
font-size: 14px(chat.css~62) and uses px throughout, so it doesn't scale with the user's OS/browser text-size preference (Dynamic Type / Android font scale).Suggested fix
Use
rem-relative units for body text so the app honors user text-size settings.Filed from a UI research sweep of the Helm mobile app (landing + live demo session) using Playwright + full source review, cross-referenced against Claude, ChatGPT, GitHub Copilot Chat, and Codex/Claude Code UIs.