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NovaDial vs Phone (cz.mts): catalog facts
NovaDial	Phone (cz.mts)
Free Free and open source under GPL-3.0.	Free Free and open source under the GPL-3.0 license.
Android	Android
Dialer and contacts in one app Dual-SIM support	Includes a dialer and contact management Can allow calls only from saved contacts
Android only Small independent project with no GitHub releases	Android 9 or later Optional spam checking sends unknown caller numbers to third-party databases
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
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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