Oh, so u dl an app for this huh...
Anyway, u mention that u change the setting to display calls only, though I'm not sure how u do it, perhaps i can share what I do to display calls only in the log (w/o any 3rd party app invlv)...
--->open your phone app
--->go to your logs
--->bring out the menu by touching bottom left of phone
--->you should see some options there, choose 'View by', more options available & that should customize your desire display
Hope this helps...
This method does not remember the setting.