the number 1 among 100 best android Health and Fitness apps of 2015 is WebMD for Android.
It provide you 24/7 access to health information and decision-support tools including WebMD’s Symptom Checker, Drugs & Treatments, First Aid Information and Local Health Listings; It also gives you access to first aid information without having to be connected wirelessly.
This free reference app is one you hope you don't need, but, the moment you do, you'll be glad you downloaded it.
