OnSIP brings your business phone to you, whether you're at the office, at a client's site, or working remotely. Connect with customers, partners, vendors, and coworkers from your OnSIP account on your iPhone.

With OnSIP, you can take advantage of standard business phone features without the additional hardware. Make and receive HD voice and video calls, monitor contact availability, check recent call history, and manage your voicemail in one simple interface.

What’s New

Version 1.1.7

* Fix memory issue which would result in dropped calls
* Various stability and performance fixes

Ratings and Reviews

3.2 out of 5
6 Ratings
6 Ratings
@marlinclark ,

Works great for me

Not sure why other reviewers are having issues. I have to open the app to maintain registration if I haven’t used it in a while such as over the weekend. Other than that, works great!

robmerkle ,

Does not ring reliably

I chose OnSIP because of their software options.. wanted to be able to receive business calls without giving out my personal cell number. Unfortunately, the phone calls don’t hit my app most of the time so I’ll be looking for another solution.

mark98201 ,

Calls between this app and Polycom VVX phones fail.

Calls from or to this mobile app and Polycom VVX 600 desk phones ring, and then fail. Sometimes calls roll over to voicemail, but more often the calls end abruptly.


Junction Networks Inc
69.9 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2018 Junction Networks


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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