An AI patient simulator you can practise on any time
Updated 19 October 2026
Diagnosica is an AI patient simulator for medical students and junior doctors. You take a history from a patient on video, by voice or text, order labs and real imaging, commit to a diagnosis and plan, and get a scorecard out of 100.
It's free to start, with no card, on the web, iPhone and Android.
Diagnosica is an AI clinical simulator for medical students and junior doctors. You take a history from an AI patient on video, by voice or text, order labs and real imaging, commit to a diagnosis and management plan, and get a competency scorecard.
It trains the part of medicine that reading doesn't: asking the right questions, choosing the right tests and committing to a decision, with feedback straight after.
What a case looks like
- Talk to the patient. They're on video, answer by voice or text in their own words, and only tell you what you ask about.
- Examine and investigate. Ask for examination findings and order the labs and imaging you want, including real radiology images from de-identified teaching cases.
- Decide. Commit to a main diagnosis, your differentials and a management plan.
- Get your scorecard. A score out of 100 across four areas (history taking, investigations, diagnosis and management), with teaching points on what you missed.
How long it takes
A full case takes around 15 to 20 minutes from the first question to the scorecard. A quick case is a two-minute, clue-by-clue mini case for the days you've only got a moment.
What the cases cover
There are 136 cases across 18 specialties (counted 28 October 2026), each written for teaching and clinically reviewed before it goes live.
| Specialty | Cases |
|---|---|
| Acute medicine | 14 |
| Gastroenterology | 14 |
| Neurology | 14 |
| Surgery | 12 |
| Endocrinology | 10 |
| Paediatrics | 9 |
| Cardiology | 8 |
| Rheumatology | 7 |
| Haematology | 6 |
| Orthopaedics | 6 |
| Urology | 6 |
| ENT | 5 |
| Ophthalmology | 5 |
| Psychiatry | 5 |
| Renal | 5 |
| Respiratory | 5 |
| Dermatology | 4 |
| Obstetrics and gynaecology | 1 |
What it doesn't do
- Hands-on examination. You ask for findings rather than examining anyone yourself, so physical skills stay with real patients and tutors.
- A conversation after the case. A case ends with the scorecard and teaching points; there's no follow-up conversation with an AI afterwards.
- Exam prediction. It isn't affiliated with any exam board and doesn't predict a mark.
Common questions
What is an AI patient simulator?
It's software that plays a patient you can interview. You ask questions as you would on a ward or in an OSCE station, the patient answers in their own words, and you decide what to investigate and how to manage them. Diagnosica adds a video patient, real imaging and a scorecard out of 100 at the end of each case.
Is there a free AI patient simulator?
Yes. Diagnosica is free to start with no card. A free account gets 5 cases in your first week, then 3 cases a week, plus unlimited 2-minute quick cases, with every case in the library open.
How many cases does Diagnosica have?
136 cases across 18 specialties as of October 2026, from acute medicine, gastroenterology and neurology to paediatrics, psychiatry and ophthalmology.
How much does Diagnosica cost?
Diagnosica is free to start, with no card. A free account gets 5 cases in your first week, then 3 cases a week, plus unlimited 2-minute quick cases, with every case in the library open. Standard is $14.99 a month or $119.99 a year (UK: £15 a month or £129 a year) and allows 50 cases a month. Prices as of 19 October 2026.
Does Diagnosica work on Android and iPhone?
Yes. Diagnosica has native apps on Google Play and the App Store, and runs in any browser at app.diagnosica.com. It is one account across all three, so your cases, streak and league position follow you from a laptop to your phone and back.
Is Diagnosica legit, and who makes it?
Diagnosica is a small, independent company operated by CC Global Group LLC, live on the web, the App Store and Google Play. Cases are written for teaching and clinically reviewed before they go live. It is a learning tool, not a medical device, and it is not affiliated with any exam board.