Groundwire: VoIP SIP Softphone

In-app purchases
445 reviews
Content rating
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About this app

Make voice and video calls, send messages, and more with our military-grade encrypted B2B SIP softphone app. Groundwire is designed for business users looking for more out of their SIP softphone.

Groundwire is preconfigured to support many of the most popular providers. Download Groundwire today to enjoy a more secure B2B experience for all essential business communications. Groundwire delivers high-quality communications, best-in-class security, and a feature-rich, enterprise-like experience for individual users.

Help your business get online and adjusted to remote work with Groundwire without sacrificing on security and accessibility.

What can Groundwire do for you?

- High-quality audio. Experience crystal clear communications. We support Opus, G.722, G.729, G.711, iLBC, and GSM audio formats.

- HD-quality video. Communicate in up to 720p HD. Our app supports both H.264 and VP8.
SMS and rich messaging.

- Let your employees quickly send SMS and rich messages through an intuitive UI.

- Call transfers and conferencing. Keep your essential operations going with built-in call transfers and conferencing.

- Integrated voicemail. Miss an important call? Groundwire comes with a reliable voicemail feature.

- Military-grade encryption. We use a powerful encryption stack that uses SRTP, TLS, and ZRTP (free for incoming calls - paid add-on for outgoing calls) to keep your company's data safe.

- Reduce your battery drain. Leverage the power of push notifications to stay notified and reduce your battery drain.

- Seamless call transition. Make calls using WiFi or your data plan. Groundwire offers seamless transition during the critical handover stage.

- Customize your experience. Groundwire is highly customizable. Customize your SIP settings, the UI, ringtones, and more.

- 5G-friendly. Take advantage of all the benefits 5G has to offer with an SIP softphone that’s built for 5G.

- Multi-device compatibility. Groundwire is compatible with any modern mobile operating system.

- No hidden fees. Don’t worry about hidden fees or subscriptions. Your one time fee provides you with a lifetime license.

- Lifetime support and updates. Each Groundwire license comes complete with lifetime support and unlimited updates.
Updated on
Sep 6, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Photos and videos, Audio and 4 others
Data is encrypted in transit
You can request that data be deleted
445 reviews
A Google user
December 7, 2019
It works but it's not very user friendly. I can't even change the ringtone to differentiate between calls. It's stuck on call integration mode and u can't figure out how to change it. Every call looks like it's coming through my provider now. I'm revising my review. After reinstalling I was able to reset the call settings that were locked during the initial install.
23 people found this review helpful
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Olivier Doyon-Karout
September 16, 2022
Quick edit after a year of use: very reliable and stable. Using it with services. Love the push call notification. Super easy to use and works perfectly for our organisation. For the price I highly recommend it! Edit: wanted to specify my use. I mainly use it for incoming calls, couple times a week. I don't use much of the advanced features. We wanted an easy way to get incoming calls other than forwarding everything to our employees cellphones.
27 people found this review helpful
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Dave Lewis
September 12, 2022
What a great app, I was able to configure all the rules I needed to make dialling super-easy across multiple providers for local and international calls.
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What's new

Added the untrusted root CA to the app's compatibility layer
Fixed number rewriting feature
Fixed sending multiple attachments
Fixed app freezing on the incoming push call
Fixed crash on Nubia device
Fixed the signing into Google Contacts issue
Fixed long call audio setup delay on incoming calls
Fixed BT watch detection
Fixed Call integration issue on pushed calls
Fixed the contacts match ordering
Improved German and Chinese translations
Improved the status circle