Award-winning diagnostic-reasoning support tool, designed by physicians to help healthcare professionals get to a faster, more accurate diagnosis.

Dem Dx has been designed for use by the global healthcare community and is clinically proven to improve your diagnostic skills. Start with a presenting complaint, add associated symptoms/signs and we will guide you to reach a set of potential diagnoses.

Dem Dx gives you:
• >10,000 clinical presentations
• >1,500 potential diagnoses
• >500 media files – x-rays, ECGs, breath sounds and more
• >300 multiple-choice questions to test your skills as you go
• Expertise from >200 specialist medical consultants
• Further information on each diagnosis - epidemiology, pathophysiology and disease classification
• Ability to create and save clinical histories

Dem Dx has been recognised globally with the following awards:
• Horizon 2020 Seal of Excellence 2017 and 2018
• Harvard Business School New Ventures in Europe 2017
• Digital Top50 2016
• Innovate UK 2016
• UK Women in Innovation 2016

Designed for practising physicians, nurses, healthcare workers and students, Dem Dx is in use globally to improve the quality of medical clinical decision-making and advance medical teaching.

Connect with us:

In-App Purchases:-

Dem Dx is completely free to download, the app contains monthly recurring in-app subscriptions to access further content. (Monthly Recurring Subscription).

Additionally, Paid content may be accessed in the following way:

- If you decide to subscribe, you will be charged £3.99 (or international equivalent) per month, as shown in the app, each month.
- Your subscription will auto-renew until you choose to cancel it.
- After confirming a purchase, your iTunes Account will be charged.
- Your subscription automatically renews.
-Unless auto-renew is turned off at least 24 hours before the end of the current period, you will be charged for the next period.
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.
- No cancellation of the current subscription is allowed during active subscription period.
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication.

Our Terms of use can be found here:-

Our Privacy policy can be found here:-

What’s New

Version 2.5.8

Thank you for using Dem Dx.
New in this update:
Performance and reliability improvements
We have altered the position of some text boxes within the app to improve the user experience

Ratings and Reviews

3.3 out of 5
7 Ratings
7 Ratings
Klbp20 ,

What the heck!?

When i first found this app i was immediately in love by it, since i am a jr Dr, still need some kind of help getting to my diagnosis, and it was really cool at the begging, but then come the uptates, after i had to buy a subscription to use the pathways and i was annoyed by that, cause it used to be free and now that I actually bought the subscription the app started to crash immediately after buying it!, idk what happen if it’s ocasional or a SCAM, i really hope its not, and will do an update to solve this problem, cause it was not happening 😤

Mmbeiruti ,


Unable to open it. Crashed immediately
Hope to solve this problem in your next update, which I hope it will not be after long time.


135.8 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
You must be at least 17 years old to download this app.
Frequent/Intense Sexual Content or Nudity
Frequent/Intense Medical/Treatment Information
Infrequent/Mild Alcohol, Tobacco, or Drug Use or References
© Dem Dx Ltd
In-App Purchases
  1. Monthly Recurring Subscription $4.49


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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