The latest take on telemedicine in the age of apps will launch Wednesday morning, as Better premiers in Apple’s App Store. The Palo Alto, Calif., startup of the same name has partnered with the Mayo Clinic to offer users 24/7 access to a personal health assistant, nurse line, automated symptom checker, personalized health information, electronic medical records and more. When necessary, consumers can interact with the prestigious nonprofit health practice’s doctors and specialists as well, who can directly prescribe limited types of drugs over the phone. The service will cost $49 a month, though a free version will include everything but the human interactions. “Health care is good at buildings, but they’re not good at mobile — at extending reach,” said Geoffrey Clapp, the co-founder of Better and a digital health veteran.