Sideline vs. GoDaddy (SmartLine)

One powers millions of phone numbers with the most reliable service, the other is great for hosting your web domain.

Get Sideline

When you compare,
there's no comparison.

Sideline

GoDaddy (SmartLine)

Custom 2nd Phone Number

Choose a local area code and search memorable letter and number combinations. Learn More

Patented Caller ID

Sideline's proprietary caller ID clearly shows when your 2nd number is ringing and who's calling it.

Unlimited Calls & Texts in U.S. and Canada

SmartLine is restricted to U.S numbers only.

Auto-Reply

Automatically respond to missed calls with a text whenever you're busy. Learn More

Team Number

Put one number on multiple phones so teams can share responsibility for one line of communication. Learn More

Multiple Voicemails

Create and manage multiple voicemail greetings for different circumstances.

Group Messaging

Send and receive SMS & MMS in a group conversation.

Custom Ringtone

Choose a different ringtone for your 2nd number so you can easily tell which line is ringing.

Website Domain Hosting

As the market leading in web hosting services, GoDaddy is a solid place to start when naming a new website. Sideline is not.

A Regrettable History of Sexist TV commercials

Sideline's brand, culture, and advertising aim to help professionals succeed—whoever they might be.

Follow your calling.

Sideline gives you a 2nd number with all the communication tools you need to start, work, grow, and pursue your passion.

Try it free for 7 days — Only $9.99/mo after

Available for iOS and Android.

Here's what users are saying about Sideline:

"Awesome app. I've tried a lot of them and this one has the best call quality because it runs off of your cellular network."

- Najee W, Sideline User

"Great app. Great call quality.
Perfect second line."

- Wa J, Sideline User

"A must-have app for small business... It's the best out there. Hands down."

- Nick74952, Sideline User