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Best Second Phone Number Business Apps

235+ iOS apps curated and reviewed

3.7 avg rating
20 free apps
Updated August 2026

With an average user rating of 3.7★, the second phone number business category is one of the App Store's strongest. Browse all 235+ apps we track, sorted so the most loved ones surface first.

Compare top Second Phone Number Business Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1SmartLine Second Phone NumberSmartLine Second Phone NumberFree4.7★ (44K)NoNoAug 2026
2Google VoiceGoogle VoiceFree4.3★ (62K)NoNoAug 2026
3Sideline: Private 2nd NumberSideline: Private 2nd NumberFree4.4★ (15K)NoYesAug 2026
4Second Phone Number'Second Phone Number'Free4.6★ (46K)YesYesAug 2026
5Second Phone Number - 2NumberSecond Phone Number - 2NumberFree4.5★ (134K)NoYesAug 2026
6Inovo: Second Phone NumberInovo: Second Phone NumberFree—NoYesAug 2026
7ExtraLine: New Second NumberExtraLine: New Second NumberFree—NoYesAug 2026
8Second Phone Number > 2nd NumSecond Phone Number > 2nd NumFree—NoYesAug 2026

Top Picks for Second Phone Number Business

SmartLine Second Phone Number#1

SmartLine Second Phone Number by GoDaddy.com, LLC

2nd phone number for business
Editor's Choice
💼 Business
4.7😞(44K ratings)
FreeIn-App Purchases
SmartLine Second Phone Number screenshot 1
SmartLine Second Phone Number screenshot 2
SmartLine Second Phone Number screenshot 3
SmartLine Second Phone Number screenshot 4
SmartLine Second Phone Number screenshot 5

Get a dedicated second phone number for your business to maintain privacy and professionalism. This app ensures calls are business-related, offers a spam filter, custom voicemail, and voicemail-to-text transcription. Manage your business communications efficiently with organized history and timely notifications.

What We Love

  • 🚀 Convenient business line
  • 📝 Stores call/text history
  • ⏱️ Ability to set business hours

Room to Improve

  • 🐛 Unreliable text messaging
  • 📞 Missed/dropped calls
  • 🔔 Delayed/missing notifications
Google Voice#2

Google Voice by Google

Smarter voice calling
Strong Contender
📊 Productivity
4.3😐(62K ratings)
Free
#29in Productivity
Google Voice screenshot 1
Google Voice screenshot 2
Google Voice screenshot 3
Google Voice screenshot 4
Google Voice screenshot 5
Google Voice screenshot 6

This app provides a dedicated phone number for calls, texts, and voicemail, syncing across devices for seamless use anywhere. It offers advanced spam filtering, call forwarding, and searchable message history. Voicemails are transcribed for easy reading and can be sent to your email.

What We Love

  • 🚀 Excellent service for 20+ years
  • 📞 Free calls and texts with WiFi
  • 🔒 Ability to block/filter numbers
  • 🔍 Helpful for business/privacy needs

Room to Improve

  • 🌍 Not available in some countries
  • 🔍 Contacts management issues
  • 🐛 Unstable connection, call drops
Sideline: Private 2nd Number#3

Sideline: Private 2nd Number by Pinger, Inc.

Second Text and Phone Line App
Worth Considering
🔧 Utilities
4.4😐(15K ratings)
FreeIn-App Purchases
#27in Utilities
Sideline: Private 2nd Number screenshot 1
Sideline: Private 2nd Number screenshot 2
Sideline: Private 2nd Number screenshot 3
Sideline: Private 2nd Number screenshot 4
Sideline: Private 2nd Number screenshot 5
Sideline: Private 2nd Number screenshot 6

This app provides a dedicated second phone number for private texting and calling. It offers features like unlimited SMS/MMS, custom voicemail, and auto-reply to help manage communications and keep conversations organized across devices.

What We Love

  • 📞 Reliable call quality
  • 💼 Useful for business/work
  • 🔔 Customizable ringtones
  • 📝 Convenient text messaging

Room to Improve

  • 🔥 Frequent app crashes
  • 🔇 Poor call quality/dropped calls
  • 🤖 Unreliable automated features

More Second Phone Number Business apps to explore

4
Second Phone Number'
Second Phone Number'
Second Phone Number'
Call.ing & Talk Change.r
Free

Obtain a secondary phone number for private calls and texts without needing an extra SIM card. This app allows for international calling and texting, offering a separate line for personal or business use. Keep your primary number private while managing multiple contacts and communications.

Acquire a second phone numberMake private calls and textsInternational calling and texting
💼 Business
(46K)
free with in-app purchases
5
Second Phone Number - 2Number
Second Phone Number - 2Number
Second Phone Number - 2Number
2nd Line for Texts and Calls
Free

Obtain a private second phone number for calls, texts, and voicemail. Protect your primary number when dating, selling online, or signing up for services. Enjoy HD calls, international calling, and AI-powered call summaries without extra SIM cards or contracts.

Private second phone numberHD quality callsInternational calling
🔧 Utilities
(134K)
free with in-app purchases
6
Inovo: Second Phone Number
Inovo: Second Phone Number
Inovo: Second Phone Number
Virtual Phone Number, 2nd line
Free
🔧 Utilities
(0)
7
ExtraLine: New Second Number
ExtraLine: New Second Number
ExtraLine: New Second Number
Extra Line Second Phone Number
Free
💼 Business
(0)
8
Second Phone Number > 2nd Num
Second Phone Number > 2nd Num
Second Phone Number > 2nd Num
Second Number, 2nd Phone Line
Free
🔧 Utilities
(0)
9
Otro: Second Phone Number
Otro: Second Phone Number
Otro: Second Phone Number
Private Calls & Texting
Free
🔧 Utilities
(0)
10
Second Phone Number - 2nd SIM
Second Phone Number - 2nd SIM
Second Phone Number - 2nd SIM
2nd line for SMS, Text & Call
Free
🔧 Utilities
(0)
11
Private: Second Phone Number
Private: Second Phone Number
Private: Second Phone Number
2nd Second Number Phone Line
Free
💼 Business
(0)
12
WowText: Second Phone Number
WowText: Second Phone Number
WowText: Second Phone Number
US Number, Texting & OTP SMS
Free

Obtain a dedicated US phone number for your iPhone without needing a new SIM card. This app allows you to make calls, send texts, and maintain privacy by separating your personal and professional communications.

Dedicated US phone numberMake and receive callsSend and receive SMS texts
🔧 Utilities
(2)
subscription
13
Phoner: Second Phone Number
Phoner: Second Phone Number
Phoner: Second Phone Number
2nd Line for Texts and Calls
Free

This app provides a secondary phone number for texting and calling, allowing users to protect their privacy. It offers features like call recording, anonymous caller lookup, and international calling. Users can get multiple numbers for various needs, from personal use to business.

Second phone number for texting and callingProtect privacy by hiding real numberInternational calling and texting
🔧 Utilities
(35K)
free with in-app purchases
14
SmartCall: Second phone number
SmartCall: Second phone number
SmartCall: Second phone number
2nd line for call, SMS & notes
Free

Get a second phone number for calls and texts without needing a new device. Manage business communications with features like call tagging, notes, visual voicemail, and business hours.

Second phone numberSMS messagingCall tagging
🔧 Utilities
(4)
free with in-app purchases
15
2Phone: Second Phone Number
2Phone: Second Phone Number
2Phone: Second Phone Number
Calls & Text On 2Number Line
Free

Easily manage a second phone line for enhanced privacy and communication separation. Obtain a new number without needing an extra device, ideal for professionals, travelers, and online interactions.

Select a second phone numberUnlimited texts and callsGuaranteed privacy
🌐 Social Networking
(1)
free with in-app purchases
16
My2ndNum: Second Phone Number
My2ndNum: Second Phone Number
My2ndNum: Second Phone Number
2nd Phone Number & Second Line
Free
🔧 Utilities
(0)
17
2nd Line, Second Phone Numbers
2nd Line, Second Phone Numbers
2nd Line, Second Phone Numbers
Calling, Recording and Texting
Free

Get unlimited local phone numbers for texting and calling on your existing device. Manage multiple numbers for dating, business, or personal use without needing extra phones or SIM cards. Features include call recording and automatic replies.

Unlimited talk and textLocal phone numbers from any stateUnlimited call recording
🌟 Lifestyle
(587)
subscription
18
Second Phone, 2nd Call Number
Second Phone, 2nd Call Number
Second Phone, 2nd Call Number
2 Line Calls - Calling App
Free

Instantly set up a second phone number on your device without needing an extra SIM card. This app provides a private line for personal calls, contact management, and business needs, protecting your main number's privacy.

Virtual second phone numberNo additional SIM card requiredPrivate line for calls
💼 Business
(9)
free with in-app purchases
19
iNumber: Second Phone Number
iNumber: Second Phone Number
iNumber: Second Phone Number
2nd Virtual Text & Calling App
Free

This app provides users with additional virtual phone numbers for private calls and international texting without needing a new SIM card. It's ideal for separating personal and business communications, enhancing privacy during online transactions, and managing multiple lines easily.

Multiple virtual phone numbersPrivate calls and international textingNo extra SIM card required
💼 Business
(235)
free with in-app purchases
20
Text Me - Phone Call + Texting
Text Me - Phone Call + Texting
Text Me - Phone Call + Texting
Second Number Unlimited Calls
Free

This app provides a free second phone number for calling and texting within the US and Canada. Protect your privacy, use it for side projects, or connect with international friends at low costs. It offers features like voicemail and the ability to turn tablets into phones.

Free calling and texting to US/CanadaSecond phone number for privacyLow-cost international calls
🌐 Social Networking
(668K)
free with in-app purchases

FAQ about Second Phone Number Business

What are the best second phone number business apps for iPhone?
SmartLine Second Phone Number tops our second phone number business apps ranking as of August 2026, with a 4.7-star average from 44K App Store ratings, and it's free to download.
Yes — 20 of the top second phone number business apps we rank are free to download, including SmartLine Second Phone Number and Google Voice.
SmartLine Second Phone Number has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 235+ second phone number business apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
SmartLine provides a dedicated second phone number for your business, allowing you to make and receive calls and texts without revealing your personal number. It ensures you know when a call is for business, offers professional call quality, and helps you manage your communications effectively.
Key features include professional call quality using your cellular connection, a spam call filter, custom voicemail greetings, voicemail-to-text transcription, the ability to set business hours, organized conversation history, and notifications for missed calls and messages.