The only PDA program I've found for psychiatry that I liked was-ah nuts its from that pocket medical book company. Forgot the name. If you buy the book, they'll let you download it in PDA form.
Problem though was that the pocket book is more convenient to use than its PDA form.
I've had the DSM in PDA form (I beleive it was--I deleted it a long time ago), and a few other psyche programs. I didn't like any of them. The pocket DSM was more convenient to use than the PDA version. I've sometimes spent over 5 minutes trying to find a DSM dx on the PDA version, the pocket version took me 10 seconds.
Epocrates is good-as a whole for prescribing, though its description of Clozaril is not accurate. It says you can only titrate up 25-50mg Q3-7 days. Its more sophisticated than that.
5 minute medical consult is something I keep on my PDA because in psyche inpatient you're pretty much always going to have at least 1 patient with a medical issue, and I've never seen a place yet where I could've ignored the IM issue of psychiatry patients. IM docs in psyche inpatient usually will only respond once psychiatrists first notice a problem.