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NFC Alarm Clock vs YtAlarm: catalog facts
NFC Alarm Clock	YtAlarm
Free Free with no ads, open source under the GPL-3.0; donations accepted.	Free Free and open source under GPL-3.0.
Android	Android
NFC tag dismissal makes it harder to switch off alarms in bed Gradually increasing or restricted alarm volume	Wake up to any chosen video or music Works without Google services
Android only NFC dismissal needs a phone with NFC and a tag or card	Relies on youtube-dl extraction, which can break when sites change Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-only
No account 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 October 2, 2026

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