Get work numbers for employee smartphones

As easy as downloading an app

Free 30-day trial

Admin control to assign & reclaim lines

Request a demo

Business Owners

"This app is great for my small business. I love that I don’t have to give out my personal number!"

−Steven B.

"Having this app makes being a salesperson much easier because I don’t have to mix business with personal calls"

− Sarah K

"Saves the cost of an extra phone and the cost of a second phone service with my cell provider!"

−John L

"Allows me to separate business calls, voicemail and texts but not have to lug around another phone."

−Wes C

the app

Sideline Inbox Mockup

get a real phone number
Choose a local area code (if you want) and add a 2nd number to your smartphone.

custom voicemail
Record and manage multiple voicemail greetings for your Sideline number.

carrier reliability
Calls use your carrier network and minutes (which are likely unlimited) so everything works like normal.

know who’s calling
Separate caller ID, notifications and ringtones let you know who’s contacting your Sideline.

Texting is free and unlimited. Sideline’s inbox puts all your communication in one place.

manage company lines
Teams can assign, manage and reclaim numbers as people come and go.

transfer exisiting numbers
Number porting lets you move existing numbers to Sideline or take them with you if you leave.

international calling*
It’s a small world after all. *Coming soon. Learn more.


Even small businesses can feel big

With dedicated work numbers and a company auto-attendant, even small companies can have a well-established and professional phone presence.

Never pay for a desk phone again

Ditch those clunky desk phones. Now employees can keep work and personal lines on the same device.


about us

Sideline is powered by Pinger, Inc.

We created Sideline for anyone who needs a 2nd number for work, or simply to keep their personal number private. Here’s what we’ve done so far:

  • 121 million+ phone numbers given out
  • 3.3 billion+ calling minutes connected
  • 100 billion+ text messages processed


How Does Sideline Calling Work?

Sideline uses your carrier network. Incoming calls ring like normal with a “Sideline” caller ID. For outbound calls, just open Sideline instead of your native calling app.

Why Does Sideline Use My Carrier Network?

This gives you the same great call quality and reliability you get from your regular number.

Does Calling Cost Anything?

If you have unlimited minutes on your carrier plan, Sideline calls don’t cost extra. This is the case for most cellular customers in the U.S.

If you have limitations on your carrier plan, know that Sideline uses your calling minutes. Check with your carrier to see if any calling or messaging fees may apply.

What About Texts? Do I Pay For Those?

Nope. Texts are totally free.

Will Sideline Calls Show Up On My Phone Bill?

Yes. Sideline calls show up on the monthly statement from your service provider. They’ll appear like calls from your regular mobile number.

Can I use WiFi for Calling?

Yes. Do what makes you happy. Subscribing to Sideline Pro lets you toggle between WiFi and carrier networks.