AskFirst, formerly known as Ask NHS, is an iPhone application developed by Sense.ly Corporation. This free app falls under the Education & Reference category, specifically in the Medicine subcategory.

AskFirst aims to provide users with improved access to health and care advice, working in collaboration with the NHS (National Health Service). With this app, users can confidentially discuss their symptoms with Sensely, a virtual health assistant. Additionally, with user permission, Sensely can request health data from HealthKit to offer personalized advice.

If necessary, the app also offers the option to arrange a call back from a clinician to further discuss symptoms. Users can also search for healthcare advice, schedule GP appointments, and find information about the opening times and locations of local healthcare services. It's important to note that this service is available to all NHS patients in England above the age of 16, and parents or guardians can create accounts on behalf of patients under 16 years of age.

In case of immediate life-threatening emergencies, it is recommended to call 999.

AskFirst is designed to be used for various symptoms and medical concerns, including abdominal pain, back pain, cough, cold or flu symptoms, chest pain, dizziness, fever, headache, pregnancy-related vomiting, rash, sore throat, urinary symptoms, and general medical questions where users are unsure whether they should seek medical attention or not.

With user approval, certain AskFirst conversations can provide valuable guidance in seeking appropriate healthcare advice.