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Snapchat vs Signal: catalog facts
Snapchat	Signal
Free Free to download and use; the service carries advertising.	Free Free; developed by a nonprofit funded by grants and donations
Android, iOS, Web	Android, iOS, Windows, macOS, Linux
Chat, Snaps and video calls in one app Large library of camera Lenses	End-to-end encryption on every message and call using the open source Signal Protocol No ads, affiliate marketers or tracking
Proprietary, account-based service with advertising Much of the app is built around feeds and discovery rather than messaging	Requires a phone number that can receive an SMS or phone call to register Desktop app requires Signal to be installed on a phone first
Downloadable app, Web application	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 20, 2026

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