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VoIP.ms SMS vs Google Voice: catalog facts
VoIP.ms SMS	Google Voice
Free The app is free and open source; a VoIP.ms account and number are paid separately.	Freemium Personal use is free where available; business use is a paid Google Workspace add-on plan.
Android	Android, iOS, Web
Familiar interface modelled on Google's SMS app Syncs with device contacts	One number for calls, texts and voicemail on many devices Works in the browser and on Android and iOS
Only works with VoIP.ms numbers Push notifications only in the Google Play version	Requires a Google account Business features need a paid Workspace plan
Downloadable app	Downloadable app, Web application, Hosted service
Open source	Closed source
License: Apache-2.0	License not stated
Account needed	Account needed
Not stated if it works offline	Needs internet
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.