Sideline vs. GoDaddy (SmartLine)

While GoDaddy SmartLine is a solid option if you need a basic 2nd number, Sideline powers millions of phone numbers with the most reliable service and offers a wide variety of helpful features—all in one app. Feel free to compare using the chart below.

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Sideline
GoDaddy

2nd Phone Number

Choose a reliable 2nd number with unlimited calling, texting, and voicemail. Learn More

Yes
Yes

Avoid Spam

Detect spam calls, telemarketers, and potential fraud so you can easily avoid them.

Yes
Yes

Number Porting

Already have a second number? Feel free to port it over from another device or landline.

Yes
Yes

Voicemail to Text

Voicemails are converted to text so you can go back and reference important information later.

Yes
Yes

Auto-Reply

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

Yes
No

Unlimited Calls & Texts in U.S. and Canada

SmartLine is restricted to U.S numbers only.

Yes
No

Patented Caller ID

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

Yes
No

Group Messaging

Send and receive SMS & MMS in a group conversation.

Yes
No

Multiple Voicemails

Create and manage multiple voicemail greetings for different circumstances.

Yes
No

Custom Ringtone

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

Yes
No

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 $14.49/mo after

Available for iOS and Android.

Here's what users are saying about Sideline:

5 Stars Rating

"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

5 Stars Rating

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

- Wa J, Sideline User

5 Stars Rating

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

- Nick74952, Sideline User