Onoff Numbers

Onoff Telecom

In-app purchases

About this app

What 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:

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Do not hesitate to share your feedback and comments at [e-mail]

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 Payment will be made through your Google account after confirmation of purchase, and will be withdrawn 24 hours before the end of each billing cycle.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.

Ratings and reviews

Reducing stars. Sudden increase in fee for no reason. Introduce portability for US number, then will think once again to give you my business. Until then adieu. ##### My review won't be long. In a few words, OnOff is a reliable and cost effective solution to have two or more numbers on the same device. Call transition from app to cellular network is flawless and seamless. Since it uses cellular minutes, its quality is as good as a call made using device sim card. Nothing is free in the world and $1.99 per US number is a steal deal compared to other similar products which charges $9.99 per number. Just one request to OnOff team, please allow us to port in our US number. And keep developing.

i paid got the number but i need to provide information which i can't because the app is glitchy and their support is the worst, no matter what i send i get the same bot answer that doesn't help with anything.

Automated support with generic responses even by email. Impossible to activate the number in roaming while that's the biggest use case for a virtual number. The app seems to hang when trying to activate via SIM call, seems it never receives/dials in the background. No other methods for activation. Horrendous service and a waste of time in my case. And don't tell me to contact support all you get is automated messages.

What’s new

-Minor bugfixes