United States
United Kingdom
France
Canada
Belgium
Poland
Austria
Czechia
Denmark
Lithuania
Luxembourg
Slovakia
Sweden
Mexico
Brazil
Peru
Puerto Rico
Israel
New ZealandComparisonUpdated October 2026
HeyNum vs Onoff: the browser-first alternative
Onoff is a well-known second-number app from France. HeyNum gives you a second mobile number too — but it lives in your browser, needs no ID check, and includes texts in every country we offer.
Why people choose HeyNum over Onoff
- Use it in any browser, with every number
- No ID document, no selfie
- Calls and SMS in all 19 countries
- Same price wherever your SIM is from
From $4.49/month · no setup fee · cancel anytime
Side by side
HeyNum and Onoff, point by point
A factual comparison based on public information, checked in October 2026.
| Criterion |  |
Onoff |
|---|---|---|
| How you use itEdge: HeyNum | In any web browser, on computer, tablet and phone | Mobile app; the web app is part of the Premium option |
| Identity checksEdge: HeyNum | None — an email address is enough | ID document and selfie, plus verification of your existing mobile line |
| CountriesEdge: HeyNum | 19 countries, all with calls and SMS | 19 countries listed; SMS available in 8 of them |
| Outgoing callsEdge: HeyNum | Over the internet, 1,000 minutes a month included | On the Starter plan, outgoing calls go through your own SIM |
| Price of a French numberEdge: HeyNum | €4.99/month, every feature included | €7.39/month (offers page, October 2026) |
| Price of a UK numberEdge: HeyNum | €4.99/month, every feature included | €9.99/month (offers page, October 2026) |
| If your SIM is from another countryEdge: HeyNum | Same price as everyone | Separate “international” pricing applies |
| Native phone integrationEdge: Onoff | Browser and home-screen web app | Native iOS and Android apps |
| Business useEven | Business numbers in 19 countries, VAT invoices | Onoff Business |
Information about Onoff comes from its public website, help centre and app store listings, checked in October 2026. Offers change: check Onoff's website for its current terms. Onoff is a trademark of its owner; HeyNum isn't affiliated with it.
An honest answer
Which one is right for you?
Both are good at different things. Here's how to choose.
Onoff is a good fit if…
- You want a native mobile app tightly integrated with your phone's contacts
- You only need a number in one of the countries where Onoff offers SMS
- You don't mind verifying your identity
HeyNum is a better fit if…
- You want to call and text from your computer as well as your phone
- You'd rather not send an ID document or a selfie
- You need SMS in countries beyond the big four
- Your SIM card is from a different country than your number
Switching
Switch in an afternoon. Keep both while you move.
- 1
Get your HeyNum number
Pick a country and pay with just an email. Your number is live in seconds.
- 2
Update contacts and accounts
Share your new number and change it on the apps and websites that use your old one.
- 3
Cancel the old number
Keep both for a few weeks so nothing slips through, then cancel your Onoff subscription.
FAQ
HeyNum vs Onoff: your questions
Our support team is made of real humans. Write to us and we'll get back to you fast.
Contact supportIs HeyNum a good Onoff alternative?
If you want a second mobile number you can use on your computer as well as your phone, without an identity check and with SMS in every country, yes. If you prefer a native mobile app, Onoff remains a solid option.
Can I move my Onoff number to HeyNum?
Not yet: HeyNum doesn't support bringing an existing number today. Most people get a new HeyNum number, share it with their contacts and update their accounts, then cancel their old number once the switch is done.
Does HeyNum have an app like Onoff?
HeyNum is a web app: it works in any browser, and you can add it to your home screen so it opens like an app. There's nothing to download from an app store.
Is HeyNum cheaper than Onoff?
For the numbers we both offer, HeyNum's monthly prices were lower in every country we compared in October 2026 — and our price doesn't change with the country of your SIM card. Check both sites for current prices.
Other comparisons
Your new number is one click away.
Pick a country, pay with just an email and start calling from your browser in seconds.