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Sideline: Private 2nd Number

Sideline: Private 2nd Number

Second Text and Phone Line App

15K ratings
227 reviews
#27 in top-grossing Utilities
🔧 Utilities
📊 Productivity
Free
In-App Purchases

Details

  • Released
  • Updated
  • August 25, 2015
  • September 9, 2026

Features

Developer

Pinger, Inc.
✨Promote your app ✨
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📉no. 27
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Reviews summary↘︎
⭐227
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🔄6+ apps
Alternatives↘︎
🎪3 available
Events↘︎
❓5 answered
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📦~ in 1 week
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About

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.

✓Second phone number with local area code
✓Unlimited SMS, MMS, and text messages
✓Custom voicemail with transcripts
✓Auto-Reply for missed calls
✓Split number across multiple devices
✓Transfer existing phone numbers
Show original description

What users say

Summarized from real user reviews of Sideline. Based on 15K reviews and a 4.4/5 average, it highlights the 5 positives and 5 negatives reviewers mention most about this Utilities app.

Positive things

  • 📞Reliable call quality
  • 💼Useful for business/work
  • 🔔Customizable ringtones
  • 📝Convenient text messaging
  • ⏱️Efficient auto-reply feature

Negative things

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

What's New in Sideline

v13.26

September 9, 2026

Every Sideline update improves speed and reliability. This release includes minor bug fixes and enhancements. Thanks for using Sideline!

More

Subscription plans

Sideline Standard EarlyAdopter

Sideline Monthly Plan for Early Adopter

$0.991 Month
How to cancel Sideline subscription ⁉️

Charts

Top Grossing

📉 27-1

Utilities

This app dropped -1 position in Utilities chart.

Last updated on September 17, 2026.

Events

Read more about Back to School. Back to Work.
AvailableNew Season

Back to School. Back to Work.

Keep work and school calls off your personal line.

Sep 2, 2026 — Sep 30, 2026

Read More

Read more about Introducing AI Responses
Event EndedMajor Update

Introducing AI Responses

Reply faster with AI-generated suggestions.

Aug 5, 2026 — Aug 31, 2026

Read More

Read more about Spam Filtering just got better
Event EndedMajor Update

Spam Filtering just got better

Send unknown callers straight to voicemail.

Jul 7, 2026 — Jul 31, 2026

Read More

See All

User reviews

Most RecentHighest RatedLowest Rated

Deceptive billing

They charged me even after I canceled the service. Then they gave me only 23% of my requested refund. Let’s go back again, I promptly cancelled this service with an adequate amount of time during the prescription period, and they STILL CHARGED ME! Use another service with better business practices.
SingASlowJamSingASlowJam

Ok

When I’m on a call it will display the wrong caller id info of the incoming call.
DaVontae the 1DaVontae the 1

Worst app ever

I wish I could put a 0 star because even a 1 star is to high for this app. It just restricts you when you use it and then they don’t ever lift it and support is even worst. I was using this for work but would recommend just getting a line on another phone then using this app. Waste of time and money and the worst support ever.
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bigsucksbutbigsucksbut

Worst app ever

I got banned on 2 different accounts for calling to many numbers. Worst app ever don’t recommend
Charlesmoney1112Charlesmoney1112

Bad

Requires a phone number to sign up to get a phone number lol
courageonlsdcourageonlsd
See 222 more reviews

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Index: Business Phone Number
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Organize Your Communication

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User experience

🐞

Reported Bugs

4 issues

Text messages not delivering properly

Bug

Missed call notifications not working

Bug

Billing and account management issues

Bug

Compatibility problems with VPNs and other apps

Bug
✨

Requested Features

5 requests

Ability to separate business and personal contacts

Feature

Web/desktop messaging functionality

Feature

Apple Watch app integration

Feature

Improved search and organization tools

Feature

More customization options

Feature

FAQ

What does Sideline do?

Sideline provides users with a dedicated second phone number that functions like a primary line. It allows for private texting, calling, and includes features such as custom voicemail, unlimited SMS/MMS, and auto-reply to manage communications effectively.

What are the key features of Sideline?

Key features include setting up a new local phone number, sending unlimited SMS and MMS messages, creating custom voicemails with transcripts, and utilizing auto-reply for missed calls. The app also supports splitting a number across multiple devices and transferring existing numbers.

How much does Sideline cost?

Sideline is a paid service with subscription plans billed monthly or annually. Users can manage their subscriptions and turn off auto-renewal through their iTunes & App Store account settings. Any unused trial periods are forfeited upon purchasing a subscription.

Is Sideline compatible with my device?

The provided description does not specify exact device compatibility. However, it mentions that the Sideline number can be accessed and used on 'any device' and can be 'split between multiple devices', suggesting broad mobile compatibility.

What are common use cases for Sideline?

Common use cases include maintaining privacy by separating personal and professional contacts, managing business communications with a dedicated line, or using it as a temporary number. It's ideal for anyone needing a reliable second line for calling and texting without a separate physical phone.