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The Best Apps for a Second Business Phone Number

We tested second phone apps for business owners and professionals who need a second phone number. Apps offer different perks and have different setbacks. Here is what we found.

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The Best Apps for a Second Business Phone Number

We’ve all been in conversations with a coworker or boss who asks for our number, and we cringe at the idea of giving them our actual phone number. What if they call on holidays and weekends? Using a second phone helps maintain more privacy between colleagues and allows for you to turn it off while keeping your main phone on. In the end, SmartLine took the cake for the best second phone line app, but read on to find out the other best apps we tested in this category.

Table of Contents

  1. 1. Apps We Selected
  2. Our Pick SmartLine Second Phone Number SmartLine Second Phone Number Runner Up Google Voice Google Voice Also Groovy Line2 - Second Phone Number Line2 - Second Phone Number Also Groovy Burner - Private Phone Line for Texts and Calls Burner - Private Phone Line for Texts and Calls
  3. 2. Everything We Recommend
  4. 3. The 411 from our Appventurer
  5. 4. Other Apps Considered
Our Pick

A great choice for business owners and professionals

  • 2nd phone number for business
    4.6 Ratings 46K+ Reviews 1M+ Downloads
    Free In App Purchases
    Free In-App Purchases
    Free In-App Purchases


This app was our first pick for business owners or freelancers, since it's easy to use and designed with professionals in mind.

Why we chose SmartLine:

  • This app gives a 7 day free trial, and costs $9.99 a month after that, which is a good deal for the features.
  • The app has a beautiful design and interface that is easy to use and well organized.
  • You can select a number in your area code and set up a personalized voicemail.
  • Set your own business hours so that you don’t receive calls during unwanted times.

The design is appealing and the app is simple. What more could you want?

Read SmartLine's Full Review
Runner Up

Trusted and True

  • A customizable phone number in the cloud
    4.3 Ratings 340K+ Reviews 10M+ Downloads
    Free Feature Rich Fresh


Google Voice is a great pick for people who use Google products regularly.

Why we chose Google Voice:

  • Calls within the US are free so if that is the only place users are calling, they can end up spending nothing using this app.
  • The app syncs up to your Gmail account, keeping everything in one place if you use Gmail.
  • The app does not use wifi or a data connection and runs on your monthly minutes so you don’t have to have internet access to use it
  • Great for small business owners and people who don’t want to give out their personal numbers at work.

This app has great features that make it easy to use and beneficial for small business owners and other professionals.

Read Google Voice's Full Review
Also Groovy

Synchronize with your first phone

  • Second business phone number with unlimited call & text to the US and Canada.
    3.5 Ratings 47K+ Reviews 1M+ Downloads
    Free In App Purchases
    Free In-App Purchases
    Free In-App Purchases


This app forwards calls to your regular phone, which keeps everything in one place.

Why we chose Line2:

  • $9.99 a month or $99 a year, which is on par with the other services we tried.
  • Settings allow you to choose to show calls in your phone’s recent list so that all the calls are together.
  • Great for people who struggle with keeping track of logs and information in an app.
  • Select a number with your zip code so callers recognize your number when you call.

This is the best pick for those who maybe aren't quite as technologically savvy or just prefer simplicity and keeping everything in one place.

Read Line2's Full Review
Also Groovy

The 2nd, 3rd, and 4th phone app

  • Second Phone Number for Anonymous Texting, Calling, and Picture Messages
    4.5 Ratings 90K+ Reviews 1M+ Downloads
    Free Feature Rich In App Purchases
    Free In-App Purchases
    Free In-App Purchases


This app is great for those who need multiple numbers.

Why we chose Burner:

  • This app allows users to have up to 3 lines so this is great for those who run multiple businesses or side hustles.
  • Free for 7 days and then $9.99 a month after.
  • Whenever you’re done with a number, just go to the burn button and delete the number.
  • Edit the appearance by selecting a different background color for a personalized experience.

Use the app for multiple businesses and projects, and to block spam callers.

Read Burner's Full Review

Everything We Recommend

  • Our Pick
    Get a second phone number just for your business calls & texts.

    When someone calls your second phone number it rings your phone and shows you it’s a business call so you know how to answer. When you call or text through SmartLine, your customers see it as coming from your new business phone number so your personal number stays private.

    Try SmartLine free for 7 days with no long-term contract or extra equipment needed. After your free trial, you’ll pay $9.99/mo for a local number or $19.99/mo for a toll-free number.

    Get set up with your business phone number in under 5 minutes.

    Get set up in under 5 minutes and try SmartLine free for 7 days!

    More Features

    Professional Quality. Calls use your cellular connection – NOT VOIP – to give you the call clarity and reliability you need to sound professional.

    Spam Call Filtering. Answer calls with confidence because suspected spam calls are sent straight to voicemail.

    Custom Voicemail. Record a custom voicemail greeting to prompt callers to leave a message.

    Voicemail to Text. Get your business voicemail automatically transcribed to text to save you time.

    Set Business Hours. Choose when you’re available for business calls and send callers to voicemail after hours.

    Stay Organized. See your conversation history of calls, texts, pictures, and voicemail, organized by contact.

    Stay Notified. Be notified and follow up quickly whenever you have missed calls, voicemail messages, or texts.

    Number Porting. Transfer an existing 2nd phone number to use with SmartLine.


    Currently available in the US only. Requires a SmartLine subscription. Install the app to choose your second phone number and claim your 7 day free trial (limit one per subscriber). After your free trial, SmartLine will automatically renew via Google Play, unless you cancel 24 hours before the free trial ends or before the end of the current billing period. Easily manage and cancel your SmartLine 2nd phone number at any time through your Google Play subscription settings. If you didn't purchase SmartLine through Google Play, you can manage your subscription through the GoDaddy website.
    In-App Purchases
    $0.99 - $19.99 per item
    $9.99 - $19.99 per item
  • Runner Up

    Google Voice

    4.3 Ratings 340K+ Reviews 10M+ Downloads
    Google Voice gives you a phone number for calling, text messaging, and voicemail. It works on smartphones and computers, and syncs across your devices so you can use the app in the office, at home, or on the go.

    NOTE: Google Voice only works for personal Google Accounts in the US and Google Workspace accounts in select markets. Text messaging is not supported in all markets.

    You're in control
    Get spam filtered automatically and block numbers you don’t want to hear from. Manage your time with personalized settings for forwarding calls, text messages, and voicemail.

    Backed up and searchable
    Calls, text messages, and voicemails are stored and backed up to make it easy for you to search your history.

    Manage messages across devices
    Send and receive individual and group SMS messages from all your devices.

    Your voicemail, transcribed
    Google Voice provides advanced voicemail transcriptions that you can read in the app and/or have sent to your email.

    Save on international calling
    Make international calls at competitive rates without paying extra for international minutes with your mobile carrier.

    Keep in mind:
    • Google Voice is currently only available in the US. Google Voice for Google Workspace users is available in select countries. Check with your administrator for access.
    • Calls made using Google Voice for Android can be placed through a Google Voice access number. All access number based calls use the standard minutes from your cell phone plan and may incur costs (e.g. when traveling internationally).
    In-App Purchases
  • Also Groovy
    Line2 is your complete business phone system for your Android device. Give your customers a professional call experience no matter where you are and keep your personal and business lines separate.

    Multiple phone numbers: Add multiple virtual business phone numbers to your device and receive or make calls from anywhere.

    Local and toll-free numbers: Go local with your business with localized numbers or give your customers toll-free numbers to call. You can also port your existing phone number to Line2.

    Unlimited call and text: Get unlimited Voice over IP calls and texting across the United States and Canada. Also, get free calls and messaging between other Line2 users.

    Auto-attendant: Guide your customers to right call queues like sales and support using the auto-attendant feature, along with on-hold music and pre-recorded call greetings.

    No cellular data needed: Make and receive calls or texts using VoIP technology. No need for expensive cellular plans or hardware.

    Call features: Screen and block unwanted calls with call screening and call blocking.

    Designed for mobile business professionals, freelancers, and entrepreneurs, Line2 lets you keep your business and personal communications separate and eliminates the need to purchase and carry a second mobile phone.

    More powerful features:

    • Use your Line2 number across your smartphone, computers, and tablets.
    • Share media with MMS and group messages with anyone in the U.S. and Canada.
    • Quick and easy setup with no additional hardware required.

    Questions or comments? We’re here to help, 7 days a week at http://help.line2.com or tap Settings -> Help from within the app.

    Note: Your cellular provider may prohibit or restrict VoIP (Voice over Internet Protocol) on their network. It’s your responsibility to check with your cellular provider about their VoIP functionality, and any additional charges it may incur.
    In-App Purchases
    $9.95 - $164.99 per item
    $9.99 - $164.99 per item
    A second line for calling, texting and picture messaging. Get started with a free 7-day trial subscription.

    Burner is the market-leading private phone number app — a second phone number for calling, texting, and picture messaging in everyday situations. Did you know that your personal info is attached to your phone number and easily searchable online? Every time you give out your real phone number, you risk exposing your personal information. Only give your number to people you trust. For everyone else, there's Burner.


    With Burner, you're in control of your personal information. No one can find your real number from your private number.

    ◦ Use a Burner line for everyday calling, texting or picture messages
    ◦ Create a disposable, private second line for dating, salespeople, deliveries, shopping online or selling items on Craigslist
    ◦ You can use it as a longterm second line for your business or side projects
    ◦ Create multiple private phone numbers, keep them as long as you want, or burn them anytime
    ◦ No need for a second line contract
    ◦ Prank calling or texting your friend with a fake number


    We intercept calls on your Burner app and route them to your cell to maintain your privacy and keep your real phone number anonymous. Since you can call, text, and manage your contacts from within the app, you don't have to carry a second device.

    Integrations allow you to archive text messages and voicemails, and communicate with your team.

    You can create multiple private phone numbers, keep them as long as you want, or burn them anytime.

    Share your Burner with anyone and everyone, or keep your second number secret for anonymous texting.

    Burner is free to download and comes with a 7-day free sample phone number. Additional numbers are available through in-app purchase or subscription. Only give your number to people you trust. For everyone else, there's Burner.


    ◦ There are two types of Burners: Prepaid and Subscription. Payment will be charged to Google Play Account at confirmation of purchase
    ◦ You can upgrade, downgrade or cancel from the Manage screen inside the app or from the Google Play store

    Privacy Policy: https://burnerapp.com/privacy

    Terms of Use: https://burnerapp.com/terms-of-service

    Info for CA Residents: https://www.burnerapp.com/privacy-policy/#california-users

    IMPORTANT: Phone calls use cell phone minutes. Burners are free for a trial period only — please review our pricing before purchasing. Area code availability varies. May not work with SMS shortcode services. Not for 911 emergency services. Works in US and Canada only. Not available in Puerto Rico.
    In-App Purchases
    $1.99 - $239.99 per item
    $1.99 - $47.99 per item
Compare All Apps

The 411 from our Appventurer

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Lou Barrett
Written by:

Lou Barrett

Lou Barrett is a queer writer who fears they're too Midwest for the big city. When they're not writing about queer culture, they're writing about books, work, and apps. They love reading, and relish any day they can camp out on their couch with a good book for eight hours. Sweet potatoes are their favorite food, any style. They love the way apps help simplify life, and make it so that we don't have to rely on our memory to get us through life and the workday. 

The Best Apps for a Second Business Phone Number




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