There a thousands of healthcare apps out there that claim to help manage your health. For more information on reliability and validity, take a look at this article from the Bernard Becker Medical Library. Be aware that these apps are for management, and should not replace medical assistance.
These apps are intended for use by patients to research information on diseases, medications, and more.
To access mobile apps, download to your phone from Apple's App Store or Android's Play Store (availability and price varies).