Free all-in-one professional-grade API.
It will let you connect user’s symptoms and complaints, with test results and doctor’s examination.
It not only provides a list of possible diagnoses, and not only taking symptoms on input, as most symptoms checker does, but it also allows you to incorporate test results, and findings of physical examination (i.e. auscultation).
It can generate documentation, and billing suggestions (if you are US-based physician) etc…
It can provide a differential list of diagnoses, it can suggest next best step for physician (next test to be ordered, the question on history, and physical examination maneuver) and can show why this or that diagnosis is more / less likely.
It is still under development, but has already working API and main functionalities.