Compare software

Phi Browser vs Dia: catalog facts
Phi Browser	Dia
Free A free download; the homepage mentions no paid plans.	Freemium A free tier is available. Heavier use requires a paid plan.
macOS	macOS
Native macOS interface on the Chromium engine Built-in AI assistant with persistent memory	Assistant reads your open tabs, so questions do not need copy and paste
Apple Silicon Macs with macOS 14 or newer only Proactive AI features may not suit users who prefer a plain browser	macOS only and requires an account The assistant sends page content to a remote service, which has privacy implications
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.