iSip -VOIP Sip Phone App Reviews

Fonctionne tres bien avec free.

Mo sound in both direction since the update...

Happy with app.

Nul!!

This one works with my SIP Provider (Brastel). I tried several SIP Phones for the iPhone and this one does a good job with an excellent price. Im not rating excellent because Im still having issues on push functionality, but thats not my primary necessity for a SIP Phone.

I have this software all over my family iphones of diferents countries. But in some phones afther Isip is programed the iphone wont be able to turn it on.

After 1 month of my complaint, nothing has been done and its crystal clear that this software company is not paying attention for the reviews. I will ask Apple to refund me and I will buy other SIP software. As simple as this, but its important all users be aware of this situation. It follows the original complaint in December 21 2012: I used this software for a couple of weeks but from the last upgrade on, whenever I try to do a SIP call, the app closes ! This happens in the iPhone and iPad. Hope someone solves this or I will change to a better sip client.

I have iPhone 6 and the app dont work. The app close automatically when execute it, where is impossible make one call.

now the app works on the iphone 3g. ive had to restart the phone. it works without problem using the fritz!box as voip hub. the quality is quite ok but clearly not as good as the attached landline phone which uses the same voip connection. the sound is somehow metallic. ive observed this also when using isip to connect directly via the voip provider (alternative sip apps have the same problem). the email support of the app provider is really fast (within hours :-)). ------ initial problem -------- the current version 4.4 does not work on the 3g any more :-( and just ends itself while starting up (i am on a regular t-mobile/telekom rate). previous versions worked. ive even completely removed the app (to clear the settings) and reinstalled it - but to no avail.

* Voice quality low * Updates and bugfixes come rarely * Partially ugly interface which does not integrate nicely into the whole standard app space

I am disappointed in this app in daily use. Graphics are low quality, not iPhone5 worthy or Apple in general. Quality in connection (auto select codecs) is not as you would expect. Overall a 1-star-only.

Please update the ui to be more like an iOS8/9 app. The current design doesnt look like an iOS app.

Too bad, Skype does not support SIP. If you are a Skype customer, do not buy this app.

We set this up with our business voip, works great. Would be good to see some other audio codecs but this is the best SIP voip app so far.

Bought this application on Feb. 12. to use with my corporate SIP based phone system. Application works when Im in the office, but does not work if I VPN from my home office. Also does not work via my offices SIP firewall from Ingate. In both situations I can establish SIP registration, but I cannot hear the audio of people I have called or have called me. Fring has worked for me in the office, at home over VPN, and though our Ingate SIP firewall. Since the software being reviewed only seems to work correctly while Im directly connected in the office it provides little benefit to me over the freely available Fring.

Pretty good SIP app. for me so far using the iPhone headset. Echo cancellation could be improved though. Supports sleep mode hence allowing incoming calls.

Have been looking for something like this for a while. Works awsome. I have been using it for a few days now and it is truly amazing. I would like to see a few more audio codecs, but I am sure they will come with time.

Easy to configure, easy to use. Setup is really straight forward. I beleive this is the best as its going to get for an SIP app for the iPhone.

Great App! Support is strong & timely. Worth every cent. Add IP over 3G & it wood be the best app ever for the iPhone! Keep up the good work

I am using the SipPhone app with VoipStunt. The voice quality is very good in comparison to the Fring Application / with VoipStunt. The interface is straight forward and easy to use. Customer service is as good as it gets; quick responses with quality technical support!