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Opal vs Forest: catalog facts
Opal	Forest
Freemium Free to download, with a paid Opal Pro subscription for more features.	Freemium Free to start, with paid plans for more features.
macOS, Android, iOS	Android, iOS, Browser extension
App blocking rules that apply on phone and desktop Focus timer that locks apps until it runs out	Simple game mechanic that discourages switching apps Visual history of your focus sessions
Some features require the paid Pro subscription Gamified rewards and friend invites may not suit everyone	Mobile only Some features require a paid plan
Downloadable app	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is 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 23, 2026

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