This app was mentioned in 1 comment, with an average of 1.00 upvote
I cover a med/surg ICU and use the following resources:
Johns Hopkins ABX Guide
UpToDate
ID-ODS android only
I have an annotated bibliography of sorts of these references on my site.
And you would probably find my critical care pharmacy podcast useful if you are a pharmacy student on an ICU rotation.
Let me know if there is anything I can help you with.