Introducing Sideline: The Trusted Calling App for Managing Your Calls and Texts

Sideline is a highly reliable calling app that thousands of people use every day to manage their calls and text messages separately from their main phone number. Our patented technology ensures that your calls and texts always go through on time, every time, with carrier-level call quality.

Keep Your Personal Number Private

With Sideline, you can send text messages and make phone calls without wifi, all while keeping your personal phone number separate. This is perfect for those who value online privacy, need a second number for professional services, or simply want to keep their communication organized.

More Than Just a Second Number

Sideline offers more than just a second number - it's a full-featured calling and texting app that helps you stay organized. You can easily organize your contacts, automatically reply to missed calls with a text message, and much more. Download Sideline today and see for yourself!

Sideline Features

Get a Local Number

With Sideline, you can choose a local phone number or select the city and area code of your choice. And the best part? You can make calls and send texts without wifi, using your existing cellular connection.

Powerful Communication Tools

Sideline offers powerful communication tools to make your life easier. You can automatically reply to missed calls with a customizable text message, share photos, videos, and GIFs from your second number, and assign "Favorite" contacts for easy access.

Full-Featured Second Phone Line

With Sideline, you get all the features of your primary number and more. You can create a custom voicemail greeting and read transcripts of voice messages, use calling and texting tools on multiple devices, and even identify new callers and save their contact details. Plus, incoming calls are clearly labeled as Sideline calls, so you always know when you're receiving a call to your second number.

Download Sideline Today

Sideline is the perfect solution for managing your calls and texts separately from your main phone number. Download it today and start your second phone line experience with a free 7-day trial. Trust us to always get the message across.

Privacy Policy & Terms of Use

At Sideline, we take your privacy seriously. Our privacy policy and terms of use ensure that your personal information is protected and used responsibly. You can trust us to keep your data safe while using our app.