ok, here's running it from Terminal...
ps aux | grep -i sonarr
jonbauer           817   1.5  0.6  4580376 107124 s000  S+    8:09AM   2:44.06 mono --debug /Applications/Sonarr.app/Contents/MacOS/Sonarr.exe
jonbauer          1608   0.0  0.0  4268312    732 s002  S+   10:46AM   0:00.00 grep -i sonarr
Jon-Retina-iMac:/ jonbauer$
and here as an application...
ps aux | grep -i sonarr
jonbauer          1610   1.0  0.8  4554688 138788   ??  S    10:46AM   0:04.13 mono --debug /Applications/Sonarr.app/Contents/MacOS/Sonarr.exe
jonbauer          1625   0.0  0.0  4305176    812 s002  S+   10:46AM   0:00.00 grep -i sonarr
Jon-Retina-iMac:/ jonbauer$