What Onoff does

Onoff is a cloud-based telecommunications operator, founded in 2014 in Estonia by Taïg Khris and headquartered in Paris (26 Boulevard de Bonne Nouvelle), with a second office in Tallinn. The company is recognized by ARCEP as a licensed telecom operator and holds licenses in 21 countries, supplying phone numbers from 17 jurisdictions across EMEA, the Americas, and Asia-Pacific. Its core product is a mobile application for iOS and Android that lets users add a second phone number to their existing device without a second SIM card, supported by four patented technologies including "Onoff Calls" for GSM-quality fallback when VoIP quality is poor.

The product surface spans a standard consumer subscription, a Premium add-on (+2.99 EUR/month) unlocking web app, multi-device, voicemail transcription, call notes, scheduled SMS, and private mode, and a separate Onoff Business sub-brand targeting SMBs and enterprises with IVR, call recording, statistics, landline numbers, and integrations with Microsoft Teams and Zoom. Revenue is generated primarily through monthly and annual subscriptions (4.92 EUR/month or 94.87 EUR/year in France, 6.75 EUR/month or 116.87 EUR/year in the UK, with a 30% annual discount), a Premium upsell, and usage-based international calling credits with a 740-day validity. Go-to-market combines a self-serve product-led growth motion on the App Stores for consumers with a dedicated B2B portal (onoffbusiness.com) for enterprise sales. The company has approximately 120 employees, has exchanged over 2 billion messages on its patented infrastructure, and has raised roughly $23.1 million across five funding rounds from BREEGA, Idinvest Partners, OneRagtime, AA Sons, LeanSquare, Meusinvest (Noshaq), Puzzle Media, and XLR Capital between 2014 and 2019.

Name

Onoff

Legal name

Onoff Telecom

Website

https://onoff.app

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Onoff is a Paris-based, ARCEP-licensed cloud telecom operator offering secondary mobile phone numbers via an iOS/Android app for consumers, freelancers, and SMBs, with a B2B sub-brand for enterprise telephony across 21 licensed countries.

Ownership category

akta.pro rank

Product category

Cloud Telecommunications / Virtual Phone Numbers

NAICS

Telecommunications (517)

SIC

Telephone Communications (No Radiotelephone) (4813)

akta.pro primary industry

Collaboration & Unified Communications Management (UCaaS/VoIP) (BPAEABAK)

Keywords

• Cloud telephony services
• Virtual phone numbers
• Mobile telecommunications
• Second phone number app
• Business telephony solutions

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations, Supply Chain

Revenue model

1. Subscription - Base Plan: Monthly or annual subscription for phone number access with included features (calls, SMS, voicemail, contact sync). Billed in advance with 30% discount for annual commitment.
2. Premium Add-on Subscription: Premium tier subscription added to base plan unlocking advanced features (Web app, multi-device, VoIP calling, call notes, private mode, scheduled SMS). Billed monthly at +2.99 EUR/month.
3. International Call Credits: Credits purchased for international calling at local rates across 20+ countries. Credits have 740-day validity period.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Onoff is a cloud-based telecommunications platform operated by licensed telecom operator Onoff Telecom that provides virtual secondary phone numbers through iOS, Android, and web applications. Users can obtain and use additional mobile numbers without a second SIM card or physical device, with Onoff Calls technology enabling GSM-quality calls via the cellular network. The offering includes a consumer app (Onoff), a Premium add-on tier with advanced features, and Onoff Business for enterprise telephony with call recording, IVR, and CRM integrations.

Product overview

Onoff is a cloud-based telecommunications platform operated by Onoff Telecom (a licensed telecom operator in 21 countries) that provides virtual phone numbers through mobile and web applications. The core product is the Onoff mobile app for iOS and Android, which allows users to have multiple phone numbers on a single device without a second SIM card. The offering comprises two main tiers: Onoff (standard) providing basic second numbers with essential features, and Onoff Premium (add-on at +2.99€/month) unlocking advanced capabilities including the Web App, multi-device usage, voicemail transcription, VoIP calling, call notes, and private mode. Onoff Business is a separate sub-brand targeting enterprises with professional features including call recording, reporting, landline numbers, and IVR. The platform leverages 4 patented technologies combining VoIP and GSM calling (Onoff Calls) for optimal voice quality, and integrates with Microsoft Teams and Zoom for third-party communication workflows.

Differentiator

Problem solved

Functional benefit

Brands

• Onoff Business: Business telephony solution for enterprises providing professional phone numbers for employees with advanced features like call recording, statistics reporting, landline numbers, IVR, and integrations with CRM tools.
• Onoff Premium

Products and services

• Onoff Mobile Application Core mobile application for iOS and Android that provides users with a secondary mobile phone number on a single device without needing an additional SIM card or phone, intended for personal or professional use separation.
• Onoff Premium

Quantifiable outcome

• Over 2 billion messages exchanged using patented technology
• +1 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability2 records

Feature5 records

Partnerships

One partnership is on record.

• RecommerceminorStrategic or Co-development PartnerPartnership for environmental sustainability. Onoff partnered with Recommerce to reduce environmental impact of smartphones by encouraging device reuse. They work together to take back old mobile fleets from enterprise clients, promoting digital sobriety and extending device lifecycle.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Hushed: Hushed is a direct competitor offering temporary and permanent second phone numbers for iOS, Android, and web, with similar privacy and work-life separation use cases to Onoff's core app. Comparable subscription pricing tier and self-serve mobile GTM motion.
• TextNow: TextNow provides free and low-cost virtual phone numbers with voice and SMS over VoIP/cellular on iOS and Android, serving a similar B2C ad-supported and subscription audience. Operates as a mobile virtual network operator in North America, paralleling Onoff's licensed-telecom model.
• Burner: Burner offers disposable and semi-permanent second phone numbers with subscription billing for privacy and side-project use cases. Closely overlapping target customer (privacy-conscious individuals, freelancers, side hustlers) and product positioning.
• 2ndLine: 2ndLine is a direct competitor providing a second US/Canada phone number on a single smartphone with VoIP calling and SMS, targeting users who need a separate business or personal line. Matches Onoff's PLG, app-store-led consumer model.
• Dingtone: Dingtone offers free or low-cost second phone numbers with international calling credits, mirroring Onoff's secondary-number + international-credits value proposition. Overlaps on pricing tier structure and consumer app-store distribution.
• Numero: Numero is a mobile app for international virtual numbers and eSIM-based second lines, with similar multi-country number coverage and traveler/digital-nomad use cases as Onoff. Comparable subscription pricing and app-store distribution.

Broad incumbents

• Google Voice: Google Voice is a free/low-cost virtual phone number service from Google, with deep integration into Google Workspace. Represents the platform-level incumbent that can bundle a second number into productivity suites, threatening standalone consumer pricing power.
• RingCentral: RingCentral is a leading cloud UCaaS and contact-center vendor for SMB and enterprise. Onoff Business competes with it on professional phone numbers, IVR, and call analytics, though Onoff targets the smaller-end of the SMB/enterprise segment.
• Dialpad: Dialpad provides AI-powered cloud business communications including phone numbers, voice, messaging, and contact center. Overlaps with Onoff Business on professional phone numbers, call recording, and CRM integrations, targeting SMB and mid-market customers.
• 8x8: 8x8 is a global cloud communications platform offering voice, video, chat, and contact center for enterprises with international number coverage in 50+ countries. Competes with Onoff Business for businesses needing multi-country phone presence with advanced admin features.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/onoff
• Facebookfacebook.com/onoffapp
• LinkedInlinkedin.com/showcase/onoff-business

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds5 records

Investors8 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Onoff