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Monarch vs Tuna: catalog facts
Monarch	Tuna
Free Free download; the fetched page does not describe paid plans.	Freemium Free with soft limits; Pro is a one-time $49 unlock.
macOS	macOS
Calculator with dates, time zones, units and currencies Searchable clipboard history built in	Native Swift app Several modes including fuzzy and text input
No Intel Mac support yet Pre-1.0 software	Still in beta Requires macOS 15 or newer
Downloadable app	Downloadable app
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 September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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