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Sideline - Second Phone Number app for iPhone and iPad

4.4 ( 8064 ratings )
Utilities Productivity Business
Developer: Pinger, Inc.
Current version: 3.9, last update: 7 months ago
First release : 24 Aug 2015
App size: 120.93 Mb

Sideline® is more than a 2nd number. It’s a communication app that helps you work efficiently, connect with customers, and collaborate as a team. Professionals choose Sideline for its unmatched reliability and feature-rich interface that separates work from life. It comes with all the calling, texting, and voicemail features you need to start, run, or grow your business.

Try it risk free for 7 days. Then subscribe to a monthly or yearly plan and let Sideline pay for itself in happy customers and new business opportunities. There are no contracts so you can cancel anytime.


AUTO-REPLY – If you miss a call, Sideline responds automatically with a text or MMS.

TEAM NUMBER – Split one number with multiple devices so your team can be more responsive.

CUSTOM NUMBER – Build your identity with numbers such as “(555) PET-SHOP,” or “(555) FLOWERS.”

LOCAL AREA CODE – Search area codes to find a local number for your company.

BUSINESS TEXTING – Text-enable your business to easily connect with customers.

ENTERPRISE DASHBOARD – Manage company numbers on employee devices. (Enterprise account required. See for details)


CARRIER RELIABILITY – All calls are cellular (not VoIP) to make your 2nd number as reliable as your 1st.

UNLIMITED CALLING – Calls use your existing carrier plan. No extra calling credits needed.

MESSAGING – Texting includes SMS, MMS picture messaging, group messaging, and more.

CUSTOM CALLER ID – It’s clear which number is ringing so you can prioritize accordingly.

SEPARATE VOICEMAIL – Record a professional greeting or set up multiple for any circumstance.

VOICEMAIL TO TEXT – Save time and conveniently read voicemail transcriptions as a text.

DO NOT DISTURB – Send Sideline calls directly to voicemail on nights, weekends, or holidays.

NUMBER PORTING – Transfer an existing number to Sideline from another device or landline. 

WEB MESSAGING – Access your Sideline number online and text from the desktop.


The required Sideline subscription is $9.99/month or $99.99/year. This subscription and other optional in-app subscriptions are automatically billed monthly or annually to your iTunes Account and auto-renew, unless you turn off auto-renew at least 24-hours before the end of the current period. Payments are charged to your iTunes account upon confirmation of purchase. You can turn off auto-renew or manage subscriptions in your iTunes & App Store account settings. Cancellations take effect at the end of the active subscription period. Any unused portion of a free trial period is forfeited when purchasing a subscription.

Privacy policy & terms of use:

Pros and cons of Sideline - Second Phone Number app for iPhone and iPad

Sideline - Second Phone Number app good for

This is a great app!!!! I give this number out to people I really dont mess with like that . I use the hell out of this app!!
Super simple to use I was a bit skeptical at 1st since it said it was completely free! I have been using the app for a few days now and it has worked great! Super easy to set up and has some really nice features if you are using it as a business phone!
I didnt even know such services were invented, not to mention FREE! I started working for a doctor and I am in direct contact with his patients all the time. It was somewhat annoying that my personal number is accessible to all and at all times! I was already worried about getting a second phone, another device to be responsible for and the headache goes on and on! With this app not only I can control when I receive notifications from patients but I can actually give this number to anyone Im not sure I wanna be in touch with and just block the number after! Ridiculous how simple it is. Definitely a 5 star! Thank you :)
This app is better then any other text or calling app then any of the other apps on the App Store that are similar. My favorite one.
Id like to be able to lose the ads with a one-time payment. I really dont want anymore reoccurring bills. Thats the only reason I havent ponied up. Its not that the app is bad its the monthly thing - thats a deal breaker. Be advised that there is a text character limit as well. Not a huge deal but Ive hit the cap before & then you have to break up your text into 2 smaller text rather than 1 long one.
This comes in handy so much. Gives me a line just for special clients.

Some bad moments

One of my clients was erroneously texted a link to a porn site from my sideline app. I am shocked confused and FURIOUS RIGHT NOW!!!
I wish we could either have an icon by the incoming calls if they leave a voicemail or be able to see all voicemail's in one place. I need to be able to get to them easily and at this time I have to go through every single call and go into it to check for voicemail. Thank you!
I've used google voice, line2, burner and text me as well as sideline. My opinion, out of those apps I have used sideline is the BEST no doubt. The pro account is only 2.99, I mean... that's nothing. Those other apps cost SOO MUCH MORE! Sideline is the best, absolutely all the way!!!!
Just updated now it freezes and forcecloses. Unusable. Please fix
This app is not reliable, missed txt, call quality is terrible
When you sign in if you dont get the code the first few times they lock you out.

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