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YTDLnis vs Seal: catalog facts
YTDLnis	Seal
Free Free to download from its GitHub repository.	Free Free and open source.
Android	Android
Brings yt-dlp's site support to Android Downloads both video and audio	Uses yt-dlp, so it works with many video sites Can save audio only as well as full video
Android only Depends on yt-dlp keeping up with site changes	Android only Not distributed through Google Play according to the research
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	No account 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 September 24, 2026

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