I was a little leery to try version 0.90b3 of Pysl. There have been a few updates since the last time I tried this application. I wanted to give it a chance to work out some of the bugs before I tried it again. Well, I decided to give it another shot and I am impressed. I found that there have been a few changes to the app (and that they all work!). I was able to add a number to the Blacklist and block both SMS and Calls from the number with success. Which is a major change from the last version I installed of this application. Also, there is a Scheduler option which allows you to choose when you would like to filter calls from certain numbers. A great feature!
If you do decided to add a phone number to the Blacklist and block either the Texts or Calls from that number, they will not show up in your stock SMS or Call History on your iPhone. The Texts and Calls will only show up in the SMS History and Call History in Pysl (unless you have the Delete option turned on, then you will not see the Text or Call anywhere on your iPhone). I was also pleased to see that the options with-in the Settings menu now work as well. When I turned on the Status Bar notifcation, it put a little square icon on my status bar when I receive a call that was blocked. It did not ring, nor did the call show up in the Call History on my iPhone but, it added the square icon to my Status Bar and the call was in the Call History list in Pysl. I am actual impressed with the progress this app has made. It seems much more stable and reliable then the last time I used it. Let me know in the comments how it is working for you! Oh! The only annoying thing is that you get the Donate pop-up every time you open the app, to get rid of it you just have to donate. Pysl is available through the iClarified source.