Best Second Phone Number Apps for Business (Top 10 of 2025)

Running a business from your smartphone sounds great—until your personal number starts blowing up with work calls and spam texts. Carrying two phones? Forget it. That’s why second phone number apps have become a must-have for business owners. They give you a clean, professional number you can manage from your existing device without the headaches.

The problem is, not all second number apps are built the same. Some are unreliable. Some are overpriced. And some bury important details (like number ownership) in the fine print.

Good news: We did the digging for you. We tested the top apps, read real customer reviews, and compared features so you can find the right second phone number app for your business—without wasting time or money.

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Table of Contents

1. What to Look For in a Second Phone Number App
   
2. Best Second Phone Number Apps for Business of 2025 (Top 10 Compared)
   
3. Which Second Phone Number App Is Right for You?
   
4. Final Thoughts: Picking a Second Number That Works for Your Business
   
5. FAQ About Second Phone Number Apps

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1. What to Look For in a Second Phone Number App

Choosing the right second phone number app isn’t just about picking the first one that pops up in the app store.
It’s about finding a service that gives you the features you actually need to run your business professionally—and doesn’t stick you with hidden fees, bad call quality, or a number you don’t even own.

Here’s what we looked at when testing and comparing the best apps:

1) App Usability and Reliability

• The app should be easy to set up, easy to use, and work every time you need it.
  
• No confusing menus, laggy call connections, or constant glitches.
  

2) Call Quality and Texting Features

• Your second number should sound just as good as your personal number.
  
• Bonus points for apps that offer business texting, MMS, and voicemail transcriptions.
  

3) Business Tools

• Look for must-have features like voicemail, custom greetings, call forwarding, auto attendants, and extensions.
  
• These small things make your business sound bigger and more professional.
  

4) Pricing Transparency

• Avoid apps that bury costs in the fine print.
  
• You should know upfront how much your second number costs per month—and what features are included.
  

5) Number Ownership and Porting Flexibility

• Make sure you actually own your second number.
  
• If you ever want to switch services, you should be able to take your number with you without jumping through hoops.
  

6) Customer Support

• Good support can save you hours of frustration when you’re running a business.

• If something goes wrong, you want real support from a real person—not endless FAQ pages.

2. Best Second Phone Number Apps for Business of 2025 (Top 10 Compared)

1) Unitel Voice

Unitel Voice makes it easy to add a second business line to your cell phone without the usual headaches. The app is simple and reliable, letting you keep your personal and business calls separate on one device—no extra phone required.

But what really sets Unitel Voice apart is their customer service. They don’t just give you a number and send you on your way—they actually help you set up the features you need to run and grow your business.

Whether it’s setting up time-of-day greetings, after-hours voicemail, call forwarding, or extensions to split calls between you and a business partner, their team is there to walk you through it.

When we tested it, setting up a second line took minutes, call quality was great, and getting help from a real person who understood small businesses made a huge difference.

What we liked:

• Easy to add a second line to your smartphone
  
• Great support for solo entrepreneurs and small teams
  
• Full suite of business features (greetings, extensions, call forwarding, voicemail)
  
• You fully own your number (port it anywhere, anytime)

What we didn’t love:

• No free trial (but they offer a 30-day risk-free money-back guarantee)
  
• No MMS (picture messaging) support at the moment

Pricing:

• Plans start at $9.99/month, including one free toll free or local number
  
• Add extra numbers anytime for $4.99/month each

Best for:

Entrepreneurs and startup teams that want a professional second number—and the personalized support to set it up right.

2) Grasshopper

Grasshopper has been around for a while—and it’s built for small businesses that want a second number with full virtual phone system features.
Setting up a second line through their app is pretty straightforward, and you can customize your greetings, voicemail, call forwarding, and extensions without too much hassle.

When we tested it, Grasshopper worked reliably, but it felt a little outdated compared to newer apps.
It still gets the job done, but the pricing is a lot higher than other options, especially if you just need a simple second number.

What we liked:

• Easy to add a second number and manage business calls
  
• Full virtual phone system features included (greetings, call routing, voicemail)
  
• Professional image without a complicated setup

What we didn’t love:

• Higher pricing compared to other second line apps
  
• App interface feels a little dated
  
• No ownership of your number (you have to keep their service to keep the number)

Pricing:

• Plans start at $32/month for one number and three extensions
  
• Includes unlimited calling and texting

Best for:

Businesses that want a second line bundled with a full set of phone system features—and don’t mind paying a little more for it.

3) Google Voice

Google Voice used to be the go-to free option for adding a second number to your phone—but that’s changed. The free version of Google Voice is now strictly for personal use.

If you want to use Google Voice for business, you have to sign up for a paid plan starting at $10/month—and only after you’re already paying for Google Workspace (Google’s business tools package).

When we tested it, the app itself was easy to use, call quality was good, and the integration with Gmail and Google Calendar was slick. But here’s the catch: support is basically DIY.

If you ever need to call someone for help, things get tricky. Most users are pushed toward help articles or community forums instead of real human support.

What we liked:

• Simple setup if you’re already using Google Workspace
  
• Good call quality and easy call/text management
  
• Clean integration with Google Calendar, Gmail, and Contacts

What we didn’t love:

• No live support unless you pay for higher-tier Google Workspace plans
  
• Business version requires paying for both Google Workspace and Voice
  
• Limited phone system features compared to dedicated providers
  

Pricing:

• Starts at $10/month per user (plus Google Workspace fees)
  
• Higher-tier plans with more features available

Best for:

Businesses already deep in the Google ecosystem who want a second number with basic call and text functionality—and don’t mind a lack of live support.

4) FreedomVoice

FreedomVoice offers second phone numbers through a virtual phone system setup.
It’s designed mainly for small businesses that want a toll free or local business number without dealing with complicated hardware or big contracts.When we tested it, the setup was easy enough, and the app handled calls and voicemails pretty well.

However, the interface felt a little clunky compared to newer apps, and while the service works, it definitely feels older—both in design and in support response times.

What we liked:

• Easy to get a toll free or local second number
  
• Includes basic call forwarding, voicemail, and auto attendant features
  
• Good option if you want to forward calls to your existing phone

What we didn’t love:

• Outdated app design and user interface
  
• Limited feature set compared to newer second number apps
  
• Support response can be slow

Pricing:

• Plans start at $9.95/month for basic call forwarding service
  
• Full virtual phone system plans start around $19.95/month

Best for:

Small businesses that want a simple toll free or local business number with basic call forwarding—and don’t need fancy extras.

5) eVoice

eVoice is one of the original second phone number apps aimed at business owners—and it still holds up pretty well today.
You can get a toll free or local number, set up call forwarding, voicemail, custom greetings, and even get voicemail transcriptions sent to your email.When we tested it, the app worked fine for basic call management, but it wasn’t the smoothest or most modern experience.
The bigger drawback? You don’t fully own your number unless you specifically request it (and even then, you may run into extra steps or fees if you ever want to port it out).

What we liked:

• Offers toll free and local business numbers
  
• Includes basic business features like call forwarding and voicemail
  
• Decent mobile app for managing calls and messages

What we didn’t love:

• App and dashboard feel a little outdated
  
• Number ownership isn’t automatic—you have to ask for it
  
• Support is average at best

Pricing:

• Plans start at $14/month
  
• Includes a toll free or local number with basic calling features

Best for:

Businesses that want a second number bundled with simple business phone features—and are okay with a slightly clunky app experience.

6) GoDaddy Conversations

GoDaddy Conversations is GoDaddy’s attempt to bundle email, chat, and business texting into one simple app—and they throw in a second phone number as part of the deal.

When we tested it, it was clear this app is geared toward very small businesses or solo entrepreneurs who want to manage everything from one place.

Setting up a second number was easy, and basic texting and calling worked fine. But GoDaddy Conversations feels a little thin compared to apps that focus just on phone features.

Call handling options are limited, and while it’s fine for basic use, you’ll quickly hit a wall if you need real business phone system features like call routing, extensions, or auto attendants.

What we liked:

• Easy setup for getting a second business number
  
• Great if you’re already using GoDaddy for email or your website
  
• Combines texting, email, and call handling in one app

What we didn’t love:

• Very basic call management features
  
• No advanced phone system tools like greetings, extensions, or call routing
  
• Built for solo use, not teams

Pricing:

• Starts at $4.99/month for a second number and messaging features
  
• Requires a GoDaddy account (typically bundled with domain or email plans)

Best for:

Solo entrepreneurs who just need a second number for basic texting and calling—and want everything tied into their GoDaddy account.

7) Talkroute

Talkroute is more than just a second number app—it’s a full-blown virtual phone system built for small businesses.

When we tested it, it was clear that Talkroute gives you way more features than most basic second line apps, including call menus, team extensions, voicemail, texting, and call forwarding.The setup was pretty easy, and the call quality was solid. The downside? It’s definitely a bigger system than what a solo entrepreneur or freelancer might need. If you just want a simple second number, Talkroute might feel like overkill unless you plan to grow into it.

What we liked:

• Full virtual phone system features included (greetings, extensions, call routing)
  
• Great call quality and reliable app performance
  
• Good support for small teams or growing businesses

What we didn’t love:

• More expensive than basic second number apps
  
• Might be too much if you just need a simple second line

Pricing:

• Plans start at $19/month for basic service
  
• Higher-tier plans available for businesses that need multiple users or advanced features

Best for:

Small businesses or teams that need a second number now—but also want the option to scale into a full business phone system later.

8) Dialpad

Dialpad isn’t just a second phone number app—it’s a full cloud-based business phone system. When we tested it, the app felt sleek and modern, and call quality was excellent.

Setting up a second number was simple, but just like with Talkroute, Dialpad is more system than app. It’s built for businesses that need serious communication tools, not just a second line.

Dialpad also leans heavily into AI-powered features like voicemail transcription, call summaries, and smart call routing, which are cool if you need them—but definitely more than what a solo entrepreneur might want or use.

What we liked:

• Super clean app with excellent call quality
  
• AI features like voicemail transcription and call summaries
  
• Easy integration with Google Workspace, Microsoft 365, and CRMs

What we didn’t love:

• Overkill if you just need a simple second number
  
• Pricier than basic second line apps

Pricing:

• Plans start at $15/user/month (billed annually) for the Standard plan
  
• Includes unlimited calling and texting in the U.S. and Canada
  

Best for:

Growing businesses or teams that need a second number now—and want an AI-powered phone system they can scale with later.

9) Line2

Line2 used to be a strong option for businesses, but when we tested it recently, it felt more like a personal-use app than a real business phone system.

You can still get a second number easily, and the app handles calls and texts without much trouble. But if you’re looking for business features like call routing, team extensions, or auto attendants, Line2 is pretty limited.

It’s great if you just want a simple, affordable second number on your phone—but if you plan to grow or need real business tools, you’ll probably outgrow Line2 pretty quickly.

What we liked:

• Easy to add a second number to your smartphone
  
• Affordable basic plan for solo users
  
• Works fine for calls and texts

What we didn’t love:

• Limited business features (no real call management tools)
  
• Feels geared more toward personal use than business use
  
• Support can be slow if you need help

Pricing:

• Plans start at $9.99/month for unlimited calling and texting
  

Best for:

Solo entrepreneurs who just need a basic second number without a lot of bells and whistles.

10) Sideline

Sideline is another second number app that feels more personal-use than business-focused these days. It’s super easy to set up a second number on your smartphone, and it’s fine for basic calling and texting. But when we tested it, we noticed it’s missing a lot of the features small businesses usually need—like call routing, voicemail customization, or extensions.

Sideline is best if you’re a solo entrepreneur who just needs a clean, separate number for business calls and texts without adding extra devices or complicated systems.

What we liked:

• Very easy setup and simple app interface
  
• Affordable way to keep business and personal calls separate
  
• Unlimited texting included

What we didn’t love:

• No real business phone system features (just calling and texting)
  
• No number ownership—you can’t easily port your number if you leave
  
• Customer support is limited

Pricing:

• Plans start at $14.99/month for one second number
  

Best for:

Solo entrepreneurs who want a very basic second number and don’t need full business phone features.

Top 10 Best Second Phone Number Providers Compared

3. Which Second Phone Number App Is Right for You?

Still not sure which second phone number app fits your business best?
Here’s a quick breakdown based on what matters most:

1) Best All-Around Option for Entrepreneurs:

Unitel Voice — Easy to set up, full business features, great customer support, and you fully own your number.

2) Best for Small Teams Needing a Full Phone System:

Talkroute — More than just a second number; includes call menus, extensions, and full team features.

3) Best for Google Users:

Google Voice — Good basic second number if you’re already paying for Google Workspace and don’t mind DIY support.

4) Best for a Second Number Plus Smart AI Features:

Dialpad — Great if you want voicemail transcription, call summaries, and integrations with CRMs and tools.

5) Best for Keeping It Simple & Cheap:

Sideline — Super basic second number with unlimited texting for entrepreneurs who don’t need fancy features.

6) Best for Adding a Toll Free or Local Business Line:

FreedomVoice — Good for basic call forwarding if you want a simple toll free or local business number.

4. Final Thoughts: Picking a Second Number That Works for Your Business

Getting a second phone number for your business isn’t just about convenience—it’s about protecting your brand, keeping your work organized, and setting yourself up for growth.
The right second number app helps you separate your personal life from your business without carrying two phones or juggling two plans.

Here’s what really matters when picking your second number:

1) Own Your Number

Make sure you fully own your number.
If you don’t, you could lose it if you ever leave the app or service. Providers like Unitel Voice make it easy to port your number out if you ever switch.

2) Pick the Right Features for Your Business

A basic app like Sideline might be enough if you’re a solo entrepreneur. If you’re running a team or plan to grow, apps like Talkroute or Dialpad offer full business phone system features you’ll eventually need.

3) Know What You’re Paying For

Look for apps with clear, simple pricing. Watch out for hidden fees if you want to port your number, add users, or unlock basic business features.

4) Think About Support

When you’re running a business, you don’t have time for tech headaches. Choosing a provider that offers real human support (like Unitel Voice) can save you hours of frustration down the road. treat it like an asset you control, not something a phone company can take away from you.

5. FAQ About Second Phone Number Apps

1) Can I keep my second number if I switch providers?

Yes—but only if you own your number. Some apps let you port your number to a new provider anytime (like Unitel Voice), while others lock you in. Always check the terms before signing up.

2) What’s the difference between a second phone number app and a full virtual phone system?

A second phone number app gives you a basic additional number for calls and texts. A full virtual phone system includes professional features like call routing, auto attendants, team extensions, voicemail-to-email, and more—ideal if you’re running a growing business.

3) Can I get a toll free number as my second number?

Yes! Many second number apps (like Unitel Voice and FreedomVoice) offer toll free numbers if you want a nationwide business presence instead of a local one.

4) Are second phone number apps secure?

Generally, yes. Most reputable apps encrypt your calls and texts. However, free or personal-use apps may have weaker security compared to business-grade services designed for professionals.

5) How much should a second phone number cost?

Most business-quality second phone number apps cost $10 to $30 per month, depending on the features you need. Be careful with “free” apps—there’s usually a catch like limited usage, ads, or no number ownership.