iPhone Screenshots


Acrobits Softphone, the perfect app for entry into the world of SIP.
*** Featuring Video calls over Wi-Fi

Check out the video tutorial and knowledgeable article at the links below.



With loads of preconfigured providers and an extremely intuitive user interface, Acrobits Softphone is simple to configure and a delight to use. Designed for ease of use but still extremely customizable, Acrobits Softphone is both the perfect Softphone to ease new users into the world of SIP and a reliable, feature rich client for veteran VoIP users.

Business users and veteran VoIP users should also check out our business caliber SIP Client, Groundwire. Just go to More iPhone Apps by Acrobits and click on Groundwire. It contains all the features of Acrobits Softphone and more.

“Acrobits Softphone is one of the best designed VoIP on the iPhone applications available today.”

Read more: http://bit.ly/vB6dQ9

“Acrobits Softphone is my New Favorite VoIP SIP Client”

Read more: http://bit.ly/a69OZP

For the list of providers and VoIP services tested with Softphone, see http://www.acrobits.cz/about-us/partners#tab_verified-voip-operators

- Video calls, H263 and H264 codecs
- Push Notifications, a reliable way to receive calls when Acrobits Softphone is closed or in the background
- Call recording (only available for SIP calls, will not record calls made from your GSM line)
- iOS4 backgrounding support
- Bluetooth headset support (iPhones only)
- Customizable ringtones
- Quickdial, your 12 favorite contacts only one tap away
- Quick import of accounts from major VoIP providers including sipgate, Gizmo5, voipcheap and many more.
- Excellent sound quality, supports Opus, G.722, G.711, iLBC and GSM. Make an in app purchase to add G.729 for great performance over 3G networks
- Highly configurable settings
- Native Contacts Integration

Acrobits Softphone fans, please rate Acrobits Softphone or leave a review.

If you have an issue with Acrobits Softphone, please contact our support even if you leave a review stating the problem. We are unable to respond to reviews so even if your issue is simple to resolve, we have no way of letting you know. Acrobits Softphone is highly configurable so problems that seem insurmountable may just require a couple of adjustments to the settings.

Acrobits Softphone has more options for receiving calls when not in the foreground than any SIP Client on the App Store.  But since they all work very differently, we don't turn them on by default.  Check out http://www.acrobits.cz/hesk/knowledgebase.php?article=53 for a comparison of the options available.


SIP - Acrobits Softphone is a SIP Client, not a VoIP service. You must have service with a VoIP provider that supports use on a standard SIP client to use it.


VoIP over 3G - Be aware that some mobile operators prohibit or restrict the use of VoIP over their network. They may prohibit the use of VoIP or impose additional fees when using VoIP over their network. By using the app over 3G, you agree to abide by any restrictions your cellular carrier imposes and agree that Acrobits will not be held responsible for any fees or liability imposed by your carrier for using the app over 3G network.

What's New

Version 5.9

- improved iPhoneX compatibility
- changed logic of picking 20ms vs. 30ms iLBC mode
- T9 search bug fix: some search results were not clickable
- several missing translations added
- improved h264 video quality

Customer Reviews

3.9 out of 5

8 Ratings

8 Ratings

*** Dropped iPad support *** Works well with Asterisk / PBX in a Flash


How about an iPad formatted, universal version, upgrade?
Upgraded to 5 stars for g.729 support, and a slew of additional, excellent enhancements - not to mention the developer keeps improving and supporting an excellent VoIP client. I wish I could give him more $$$ ;-)
Upgraded to 4 Stars for supporting calling straight over 3G. Woohoo!
I run my own PBX in a Flash home and office PBX, and have been looking for an appropriate client on iPhone. This does the job, and it does it very well.

Some suggestions for enhancements that would catapult this well into 5 stars territory:

- support for the G.729 codec for even better quality. Yes, G.729 costs money to license - make it an in-app purchase. I would gladly pay an additional $5 or so for that feature.

- allow customizing the ringtones

- add custom quick-buttons for VM, for example.

- aesthetic changes of the look and feel to bring it more in line with the native look of an iPhone phone app, than some avant garde retro design experiment (allow selection of different skins, to appease avant garde retro afficionados). Maybe make skins an in-app purchase. ;-)

Do these, and a shining 5 stars, and more money, will be yours ;-)

LOVE Softphone again!!!


The update now fixed the issue with Callcentric, thank you for the quick fix! This SIP program does everything I need plus extras that give it a big advantage over others including Skype. For one thing the ability to record the call is a huge bonus as often I need to review conversations for my work. Also I never could get my Callcentric SIP account to work with iPico or other iPhone SIP programs, Softphone worked without any problems. Lastly, I love that you can now use bluetooth with Softphone which is something Skype doesn't support and I seriously doubt that other iPhone SIP programs do at the moment. In a nutshell this is a well polished iPhone app well worth purchasing especially with all of the extras it includes. I like Callcentric and it works perfect with Softphone, highly recommended if you like saving money!!! This is by far my favorite VOIP program on either my Mac or my iPhone. No I don't work them, this is just a Grade A written program and does what I need it to do and well above that. Now with 3G support there's no reason to use AT&T for international calls, save your money and get this app.

Very good experience so far


After trying another well-known SIP client on the App Store, that I couldn't even get to connect to my VOIP provider, I gave this one a try. My only regret was not having tried this one first, it would have saved me the money I wasted on the other one.

Have been using it for a few months now and I am very satisfied with the results. It has been 100% reliable so far, keeping me signed-in on the server and with push notifications warning me of incoming calls when the app is closed, and letting me answer the call right from the pop-up. In the few months I have been using this app, I haven't missed a single call by fault of the app. Reliability was one of my main concerns since I wanted to use this number as the regular contact number for one of my groups of contacts, and this app has allowed me to do just that, with complete availability at all times.

Sound quality is excelent on WiFi and wherever there's a strong 3G signal. If I move locations and the 3G signal weakens, the call quality drops drastically fast, and becomes totally unusable, but I blame that on the network rather than the app.

My only gripes with this app are the user interface, which doesn't match the overall look of the iPhone at all and makes the app look out of place on the device. Also the cost of the G.729a codec seems kind of steep at $10. I know there are royalties to be paid to use the codec, but it still seems a little high to me.


51.6 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Arabic, Bulgarian, Czech, Danish, Dutch, French, German, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Persian, Polish, Portuguese, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish
Age Rating
Rated 4+
© 2009-2017 Acrobits
In-App Purchases
  1. G.729 Annex A Codec $9.99
  2. ZRTP For Outgoing Calls $24.99


  • Family Sharing

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

  • Siri

    Get things done within this app using just your voice.

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