Best Second Phone Number Business Apps

239+ iOS apps curated and reviewed

4.0 avg rating
20 free apps
Updated October 2026

With an average user rating of 4.0★, the second phone number business category is one of the App Store's strongest. Browse all 239+ apps we track, sorted so the most loved ones surface first.

Compare top Second Phone Number Business Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1SmartLine Second Phone NumberSmartLine Second Phone NumberFree4.7★ (44K)NoNoNov 2026
2Google VoiceGoogle VoiceFree4.3★ (62K)NoNoNov 2026
3Sideline: Private 2nd NumberSideline: Private 2nd NumberFree4.4★ (15K)NoYesNov 2026
4Second Phone Number - 2NumberSecond Phone Number - 2NumberFree4.5★ (135K)NoYesNov 2026
5Second Phone Number'Second Phone Number'Free4.6★ (46K)YesYesNov 2026
62Phone: Second Phone Number2Phone: Second Phone NumberFree1.0★ (2)NoYesOct 2026
7Second Phone Number - 2nd SIMSecond Phone Number - 2nd SIMFree—NoYesMay 2026
82nd Line Phone Number2nd Line Phone NumberFree4.5★ (41)YesNoOct 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)
Free
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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
  • 🤖 Poor customer support
Google Voice#2

Google Voice by Google

Smarter voice calling
Strong Contender
📊 Productivity
4.3😐(62K ratings)
Free
#34in Productivity
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This app provides a dedicated phone number for calling, texting, and voicemail, syncing across devices. It offers spam filtering, call forwarding, and transcribed voicemails. Enjoy competitive international calling rates and manage messages from anywhere.

What We Love

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

Room to Improve

  • 🌍 Not available in some countries
  • 🔍 Contacts management issues
  • 🐛 Unstable connection, call drops
  • ⏱️ Slow app performance and lag
  • 🔇 Poor call quality at times
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
#22in Utilities
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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
  • ⏱️ Efficient auto-reply feature

Room to Improve

  • 🔥 Frequent app crashes
  • 🔇 Poor call quality/dropped calls
  • 🤖 Unreliable automated features
  • 💰 Expensive subscription fees
  • 🔍 Inability to manage contacts

More Second Phone Number Business apps to explore

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 October 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 October 2026.
We track 239+ second phone number business apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.