Table 1.

Features of the eleven apps.

Name	1.Establish A Patient History	3.Evaluate Symptoms	4.Give an Initial Diagnosis	5.Order Further Diagnostic Tests	8.Referrals or Other Follow-up Treatments
Ada	Date of birth, gender, height, weight, medication, allergies, health background (e.g., diabetes)	√	Likelihood, cause-and-effect diagram	×	Symptom tracking
K Health	Date of birth, gender, height, weight, medications, allergies, ethnicity, smoking, surgeries, chronic conditions, family history	√	Likelihood, pictures for conditions	×	Chat with doctors, get prescriptions, symptom tracking
Ask NHS	×	√	Text / video	×	Find pharmacies
Your.MD	Date of birth, gender, consultations history	√	Text / pictures for conditions	Order tests using third-party apps	Get prescriptions, find pharmacies, symptom tracking
Mediktor	Age, gender, height, weight, medication, race, allergies, risk factors, past medical history, past surgical history	√	Text / pictures for conditions	×	Chat with doctors
HealthTap	Age, gender, medications, allergies, ethnicity, current and past conditions, vaccinations, lab test results, treatment, lifestyle, pregnancy	√	Likelihood, text	×	Chat with doctors
Apotheka Patient	Age, gender, weight, height, blood group	√	Text	×	Book an appointment with a doctor
Sensely	×	√	Text	×	×
Health Buddy	×	×	Text	×	×
Babylon	×	√	Text	×	×
NHS online: 111	×	√	Text	×	Find hospitals