Onoff Numbers
Onoff Telecom
3.6 stars18,504 reviews1,000,000+Free
CommunicationEveryoneVersion 5.9.5.0Updated 4/24/2026, 7:35:43 PM
Open in StoreWhat if you could get a second number in minutes, without the hassle of using a second phone or a second SIM card, but just by downloading an app? You dreamed of it, Onoff made it happen!
Download the Onoff app and get a second number in an instant!
You will want to use a second number for:
Having a separate professional line - separate your professional and personal life
Protecting your privacy when you are online - your safety is our priority
Selling goods online in total confidence - safely communicating with your potential buyers
Carrying only one phone on you - less weight in your pocket, less hassle between switching the phones
Being able to use your phone number from any smartphone and even from your web browser - we want you to have a number as flexible as your email!
Make low-cost international calls - the world is just one call away
With Onoff, you also have:
Unlimited calls and SMS
Integrated visual voicemail
Voice messages
Synchronization of all your contacts list
Possibility of porting an existing number, in order to use it in the Onoff App
An app compatible with all SIM cards to always call on the best network
Numbers from more than 30 countries available
And there’s much more!
You can follow us on:
Facebook - Linkedin - Twitter - Instagram
Do not hesitate to share your feedback and comments at support@onoffapp.com
Have a nice day with Onoff.
In the application, you can subscribe to a number or a calling plan, the prices of which vary depending on the nationality or region chosen, as well as the duration (1, 3 or 12 months). Payment will be made through your Google account after confirmation of purchase, and will be withdrawn 24 hours before the end of each billing cycle. You can deactivate automatic renewal in the settings of the Google Play after purchase, at least 24 hours before the end of the current subscription period. With your Onoff number, you can make unlimited calls throughout Europe. For communication outside of Europe, you can also purchase credits, valid for any destination!
We cannot guarantee the systematic compatibility of numbers with verification services by SMS.
Download the Onoff app and get a second number in an instant!
You will want to use a second number for:
Having a separate professional line - separate your professional and personal life
Protecting your privacy when you are online - your safety is our priority
Selling goods online in total confidence - safely communicating with your potential buyers
Carrying only one phone on you - less weight in your pocket, less hassle between switching the phones
Being able to use your phone number from any smartphone and even from your web browser - we want you to have a number as flexible as your email!
Make low-cost international calls - the world is just one call away
With Onoff, you also have:
Unlimited calls and SMS
Integrated visual voicemail
Voice messages
Synchronization of all your contacts list
Possibility of porting an existing number, in order to use it in the Onoff App
An app compatible with all SIM cards to always call on the best network
Numbers from more than 30 countries available
And there’s much more!
You can follow us on:
Facebook - Linkedin - Twitter - Instagram
Do not hesitate to share your feedback and comments at support@onoffapp.com
Have a nice day with Onoff.
In the application, you can subscribe to a number or a calling plan, the prices of which vary depending on the nationality or region chosen, as well as the duration (1, 3 or 12 months). Payment will be made through your Google account after confirmation of purchase, and will be withdrawn 24 hours before the end of each billing cycle. You can deactivate automatic renewal in the settings of the Google Play after purchase, at least 24 hours before the end of the current subscription period. With your Onoff number, you can make unlimited calls throughout Europe. For communication outside of Europe, you can also purchase credits, valid for any destination!
We cannot guarantee the systematic compatibility of numbers with verification services by SMS.
Developer email
support@onoffapp.com
Developer website
http://www.onoff.appReleased
Jan 25, 2016
Current version
5.9.5.0
Android version
9
Reviews & Ratings
3.6
out of 5
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⚠️ Users report mixed experiences
18,504 reviewsScreenshots
