Onoff 5.9.0

ONOFFAPP – Freeware – Android iOS
out of 651 votes

Onoff: Seamlessly Manage Multiple Numbers on Your Phone

David Fischer

03/22/2025

Onoff by ONOFFAPP allows users to create and manage multiple phone numbers, making it easy to keep personal and professional communications separate.

Imagine being able to get a second number in just minutes, without the hassle of using a second phone or SIM card. That's exactly what Onoff offers!

Separate your professional and personal life by having a separate professional line.
Protect your privacy online - safety is our priority.
Safely communicate with potential buyers when selling goods online.
Carry only one phone - less weight and hassle from switching phones.
Use your phone number from any smartphone or web browser - we want to give you a number as flexible as your email!
Make low-cost international calls - the world is just one call away.

With Onoff, you also get:

Calls and SMS
Integrated visual voicemail
Voice messages
Synchronization of all your contacts
Possibility to port an existing number 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! Follow us on Facebook, LinkedIn, Twitter, and Instagram for updates.

In the app, you can subscribe to a number or calling plan with prices varying depending on the chosen nationality or region, as well as the duration (1, 3, or 12 months). Payment will be made through your iTunes account after purchase confirmation and will be withdrawn 24 hours before the end of each billing cycle. You can deactivate automatic renewal in the App Store settings at least 24 hours before the current subscription period ends. With your Onoff number, you can make unlimited calls throughout Europe. For communication outside of Europe, you can purchase credits valid for any destination.

Any demonstration product offered within promotions will be automatically terminated upon the first purchase. We cannot guarantee the systematic compatibility of numbers with SMS verification services. Onoff: multiple numbers in one application, no SIM card changes required!

Overview

Onoff is a Freeware software in the category System Utilities developed by ONOFFAPP.

The latest version of Onoff is 5.9.0, released on 07/02/2024. It was initially added to our database on 10/27/2023.

Onoff runs on the following operating systems: Android/iOS.

Users of Onoff gave it a rating of 5 out of 5 stars.

Pros

User-friendly interface that simplifies the management of multiple phone numbers.
Allows users to create separate work and personal profiles on the same device.
Offers good privacy as calls and messages are not tied to the user's real number.
Ability to have temporary numbers for various purposes, adding a layer of security.
Cheap monthly subscription options compared to other similar apps or services.

Cons

Limited availability in some countries may hinder potential users.
Calls may have lower audio quality compared to traditional mobile services.
Some users report occasional connectivity issues, leading to dropped calls.
Not suitable for emergency calls, as the app does not support 911 services in all locations.
Need for an internet connection for the app to function optimally, which may be a limitation in places with poor network coverage.

FAQ

What is Onoff?

Onoff is an app developed by ONOFFAPP that allows users to create multiple phone numbers for various purposes without the need for additional SIM cards.

How many phone numbers can I create with Onoff?

With Onoff, you can create up to 5 different virtual phone numbers.

Is Onoff available on both iOS and Android?

Yes, Onoff is available for download on both iOS and Android devices.

Do I need a physical SIM card to use Onoff?

No, Onoff operates as a virtual service and does not require a physical SIM card.

Can I receive SMS and calls on my Onoff number?

Yes, you can receive both SMS and calls on your Onoff number just like a regular phone number.

Is there a subscription fee for using Onoff?

Onoff offers different subscription plans, including free options with limited features and paid plans for additional functionalities.

How do I delete an Onoff number?

To delete an Onoff number, simply go to the app's settings, select the number you wish to delete, and follow the prompts to remove it.

Can I use my Onoff number for verification purposes?

Yes, you can use your Onoff number for verification purposes on various platforms that accept phone numbers.

What happens if I lose my device?

If you lose your device, you can still access your Onoff account by logging in from another device, ensuring you have the necessary credentials.

Is my privacy protected when using Onoff?

Yes, Onoff takes user privacy seriously and provides features to help protect your personal information while using their services.

David Fischer

I am a technology writer for UpdateStar, covering software, security, and privacy as well as research and innovation in information security. I worked as an editor for German computer magazines for more than a decade before joining the UpdateStar team. With over a decade of editorial experience in the tech industry, I bring a wealth of knowledge and expertise to my current role at UpdateStar. At UpdateStar, I focus on the critical areas of software, security, and privacy, ensuring our readers stay informed about the latest developments and best practices.

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