Medscape:
iPhone: https://itunes.apple.com/ca/app/medscape/id321367289?mt=8
Android: https://play.google.com/store/apps/details?id=com.medscape.android&hl=en
Epocrates (contains both basic and paid for options): http://www.epocrates.com/mobile
Calculator Tool: http://www.qxmd.com/apps/calculate-by-qxmd
Quick LabRef
Android: https://play.google.com/store/apps/details?id=com.clinical.quicklabreference&hl=en
Eponyms