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iOS & Android App

Install the Tresta app and turn your iPhone or Android smartphone into a business phone.

Turn Your Smartphone Into
Your Business Phone

With the Tresta app, you can turn any smartphone into an extension of your virtual phone system and enjoy unlimited calling and texting as well as powerful call management features.


With Tresta’s unlimited calling, you can make and receive calls from anywhere on your business phone number without worrying about your bill – Tresta has no per minute or per call charges.

iPhone Peacock business calling


Your Tresta number also includes unlimited texting. Send and receive unlimited text messages, photos and videos on your local or toll-free business number.

Texting feature on mobile app

Dynamic Caller ID

With Tresta’s dynamic caller ID, you can use your business number and personal number on the same phone, while keeping your personal and professional lives separate.

Incoming calls can be configured to show either your business number as the caller ID or the actual caller’s caller ID.

Outgoing calls will show your business number as your caller ID, so your personal number stays private.

iPhone call incoming feature

Contact Syncing

Tresta automatically syncs with your phone’s contacts as well as any users, departments and extensions that you configure – so anyone you want to call or text is just a click away.

iPhone contacts syncing feature

Voicemails & Call Recordings

Tresta’s inbox makes it easy to review your voicemails and call recordings, with convenient options to reply with a call back or text message.

Voicemails and call recordings

Call History

See recently dialed, answered, and missed calls, and easily search for specific contacts and phone numbers in your history.

iPhone contacts feature

Call Details

Tap the call details icon on any history record to see how the call was routed, where participants were located and more.

Call details feature on iOS

It’s Easy –
Let’s Start Here

Tresta makes it easy to get a new phone number or transfer your current one.

Frequently Asked Questions

How do I get the iOS app?

Tresta’s mobile app is available in the Apple App Store.

Does the Tresta app use my cell phone minutes?

Yes. Tresta uses your cell phone carrier to forward calls through the app, so any calls you place or receive through the app will use minutes from your cell phone plan.

Do I have to use the mobile app to use Tresta?

Yes and no. The mobile app is required to place calls and to send and receive text messages. If you don’t care about these features, though, you can receive your calls via call forwarding and do not need to install the mobile app.

I have other questions. Who can help me?

If you have additional questions, we’d love to talk with you. Our product specialists are available 24/7 – visit our contact page for details on how to reach us by phone, chat, and email.

Loved by Customers

At Tresta, you’re our passion. We’re constantly striving to make our business phone system even better, because nothing makes us happier than seeing you happy.