A free program for Android, by EM:RAP.
EM:RAP is an online, subscription-based, educational mobile application that provides emergency and urgent care medicine information to doctors, nurses, students, and medical professionals.
EM:RAP brings together all of the best and most relevant information in one place to make it easy to answer clinical questions in an emergency or an urgent situation. It's a truly comprehensive, peer-reviewed, clinical resource for emergency and urgent care medicine that you can use anywhere, anytime, on any device.
With a subscription, you can access the full, current, and future content from the app, as well as all of the content in the online library.