iSip -VOIP Sip Phone App Reviews

I am using voip.ms for 1¢/minute calls, and aside from this apps slow launch time and slightly clunky interface, I am very happy with it for outgoing calls. Incoming calls are not realistic because the iPhone cant run applications in the background (to accept calls the iPhone needs to be awake, and the application needs to be running). But for outgoing calls over wifi only, its excellent. Even useful as a backup line as most VOIP providers will allow simultaneous calls. Unless youve been blessed with a generous amount of minutes on your cell plan, I see no reason why anyone shouldnt run this app. That is until someone else builds a faster, more elegant app.

After playing with fring, nimbuzz and some others I decided to pay the $ and try out SipPhone and boy am I glad I did! It is head and sholders above the rest! Get this app if you are looking for a sip client.

Simply works ! Im using voip.ms in Montreal and this app works as well as a standard phone. Called this morning a cell phone in France and it works perfectly. Just one concern, using +336xxxx was not working but 011336xxxx did work perfectly.

I downloaded this and was up and running with my voip.ms account in seconds. Well worth the price.

Great SIP app - very straightforward setup and use. I notice a few changes in 2.2 that might have been better left alone - like the ability to disable Cellular access. Very handy to ensure you dont accidentally make the call over the wrong network. Also, I am almost CERTAIN I made VoIP calls over 3G with version 2.1 - even though it wasnt supposed to be supported. Lets get that feature back! Also - Bluetooth headset support is an absolute must. Keep up the good work.

Great app! Works much better than Fring, and the sound quality is great. Using CallCentrix for my VoIP provider. Would be nice to have G.729 codec support... If you can add Bluetooth and G.729 support, Id give you 5 stars. The G.711 codec is somewhat acceptable, but not great. GSM codec works very poorly for me, even with high bandwidth wifi.

Good softphone for asterisk server Work great with my Elastix PBX

The latency is low as there is no proxy, like fring. My only real complaint is the interface. Ugly.

Excellent product. Config is very easy: just had to select my SIP provider (Callcentric) ID and password. Works flawlessly.

Voice quality is substandard despite setting changes suggested by support. I simply will not use this app and just pay the cell charges.

It works well to connect to my Asterisk VoIP provider. Im praying there will be an upgrade that will work over 3G as AT&T as now changed its mind and will allow VoIP applications.

As soon as I upgraded to v 3.1 the iSIP app turned into a piece of junk. I was not able to make calls and cant hear any ring tones!! I regret paying for this app.

A piece of junk. Regret for paying. Still no sounds by now. Numm is much better.

Not usable for anything serious. Many typos in the interface which indicate sloppiness.

Ive been using this since the very early releases. It wasnt perfect then but since the new versions have come out everything has got way worse. Im very tech savvy and have no issues with other sip software. Quality if it works is mediocre at best. Id pass on this until things change. Also the GUI is horrid, but that isnt my main comcern

This program completely fails at push it does not even attempt to do this feature

Many bugs! It doesnt make sense Apple approuved this. Push nofication doesnt work. Waste of money!

Another + for iPhone/iPod Touch.

I also have Acrobits SIP products installed for comparison. Application works OK over 3G and WiFi. Audio quality is not as good as Acrobits. Notification feature does not work, while I have no problem with Acrobits. Other features are comparable between the 2 products.

This app works beautifully with our Trixbox (Asterisk) PBX. And I can answer calls from Push notifications now! Call quality over 3G is excellent. This new version is totally worth picking up.