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IINA vs PYM Player: catalog facts
IINA	PYM Player
Free Free and open source under the GPL 3.0.	Free Free, with optional donations via PayPal or bitcoin.
macOS	macOS
mpv decoding with a genuinely native macOS interface Picture-in-picture, gestures, Touch Bar and a standalone music mode	Plays MKV, AVI, WMV, WebM and other formats via FFmpeg Automatic subtitle download from NapiProjekt
macOS 11 or newer only Nightly builds exist but the project warns they may be unusable	Website and subtitle source are aimed at Polish users macOS only, and a large download of about 260 MB
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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