---
title: "Diagnosaurus® DDx - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "** Top-Selling App Used by Tens of Thousands of Health Professionals, Worldwide **   ABOUT DIAGNOSAURUS DDX This quick-reference tool helps healthcare professionals perform differential diagnosis with"
---

# Diagnosaurus® DDx — United States
> Best-selling DDx app worldwide

![Diagnosaurus® DDx App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/de/fa/70/defa7061-f313-8183-712a-d2156316b201/AppIcon-0-0-1x_U007epad-0-1-0-85-220.png/434x0w.png)

**Developer:** [Unbound Medicine](https://apptail.io/developer/unbound-medicine-Xyg) (United States)
**Category:** Medical
**Rating:** 4.8/5 (2,476 ratings)
**Price:** Free
**Bundle ID:** com.unboundmedicine.DiagnosaurusInApp
**Store:** Apple App Store
**Country:** United States
**Version:** 1.15 (released 2026-10-17)
**Original Release:** 2014-03-19
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id833728910)
**AppTail Page:** [https://apptail.io/app/diagnosaurus-ddx-wRO/united-states](https://apptail.io/app/diagnosaurus-ddx-wRO/united-states)

## Diagnosaurus® DDx Description
** Top-Selling App Used by Tens of Thousands of Health Professionals, Worldwide ** 

ABOUT DIAGNOSAURUS DDX
This quick-reference tool helps healthcare professionals perform differential diagnosis with speed and confidence at the point of care. With Diagnosaurus you can quickly search over 1,000 diagnoses by organ system, symptom, or disease, or you can view all entries. Use the valuable “See Related DDx” feature within each entry to consider alternative diagnoses and quickly link to those entries. The convenient “Favorites” feature allows you to save specific searches and bookmark in your personal archive. 

FEATURES 
• More than 1,000 differential diagnoses
• Highlight and make custom notes within entries
• Entries organized in quick-read format
• “See Related DDx” links to other potential diagnoses
• Disease, symptom, and organ system indexes
• “Favorites” for bookmarking important entries
• Universal Index Search to help find answers fast

Author: Roni F. Zeiger, MD 
Publisher: McGraw-Hill Medical
Powered by: Unbound Medicine

## Diagnosaurus® DDx Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8a/80/b0/8a80b084-7ff2-8574-f11e-bd8f7214667d/8174a9a7-3b3c-4922-9568-4df1e6af0232_diagno_ipadpro_1.png/2732x2048.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b3/5d/07/b35d073e-4f3a-678f-773e-2c90c5046320/dceb8e9c-4786-420a-8e36-d0ef910a7dba_diagno_ipadpro_2.png/2732x2048.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/9d/c8/3c/9dc83c19-f915-3893-600b-2df4a3c597b0/b95d245e-2666-4921-952b-b252eb1673e1_diagno_ipadpro_3.png/2732x2048.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/49/8e/90/498e90bd-8347-28fe-c9f8-d940f28e54fe/564cbef3-2aa3-46bb-bfae-eff2dc843105_diagno_ipadpro_4.png/2732x2048.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1a/38/7c/1a387ccb-9e03-e5f9-0c8d-d35a66217daa/61213263-2368-4ad5-80db-ac70b548f426_diagno_ipadpro_5.png/2732x2048.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/b3/89/b0/b389b0f6-38b9-06eb-2dce-aec2aa498ad7/d3415c62-253a-43fa-8639-bcb7a3a3ca80_diagno_ipadpro_6.png/2732x2048.png)

## Diagnosaurus® DDx Rating Breakdown in United States
- 5 stars: 2,239 (90%)
- 4 stars: 141 (6%)
- 3 stars: 41 (2%)
- 2 stars: 18 (1%)
- 1 stars: 37 (1%)

## Diagnosaurus® DDx Reviews in United States

### **--- "Do Not Purchase"
(Review from NP student) This DDx is greatly lacking in substance and content. Many signs and symptoms are not listed and many differentials are left out.
-- Toasty Cracka, 2024-08-22

### ***** "PMHNP"
Great app !!
-- Nau985, 2022-09-18

### ***** "Excellent app."
Use it frequently during my practice.
-- Chandur Khetpal, 2022-06-20

### ***** "Great as quick reference for differential diagnosis"
This app is a great tool when you have patients with vague symptoms.I have found it very helpful.
-- damn_nicknames, 2022-06-19

### ***** "Great for what it is"
I’m a resident who was recommended this app by a colleague. At first i thought it was lame but after a few weeks i actually think it’s a great resource. Yes, you should know a good differential for common stuff cold. Yes, you can find more info elsewhere for workup and broader differentials and diagnostic algorithms. But nothing i’ve found is quite as good for 3 am when your brain is foggy and you have to staff a new patient in 10 minutes and you want to make sure you’ve covered your bases. Even when i have more time i’ll first use my own knowledge and then check this to see if there is anything else that i think is plausible. If you have good clinical background you can go through the differentials quick and rule out etiologies in your head or make a mental asterisk next to ones that may deserve more workup/research. Anyway, i highly recommend it, just don’t expect it to be what it’s not intended to be.
-- Jinglis1013, 2022-06-16

### ***** "Great"
👍🏼
-- Mo1980-#1, 2022-02-17

### ***** "Easy to use and fast diagnostics assistance in the office"
In retirement the access to current literature diminished a rapid access in my e-phone.
-- Barbudo MD., 2021-06-09

### *---- "Not helpful"
This app wasn’t helpful for what I needed and now I’m getting billed for services not obtained.  Ugh.
-- lcscgirl, 2021-03-04

### ***** "Usefull"
I use the app frequently to look up differential.app is easy to use and well designed .
-- Aniesh2021, 2021-01-12

### *---- "Poor app, can’t believe I paid for it"
If you’re in med school just google it, search on up to date, or think for a second. This app has no background info, just a list of ddx and it doesn’t even link to a page with more info. You would end up looking it up anyway.
-- h0odtime, 2020-10-22

[View all Diagnosaurus® DDx reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## Diagnosaurus® DDx In-App Purchases
| Item | Price |
|------|-------|
| Diagnosaurus DDx | $4.99 |

## Diagnosaurus® DDx Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Grossing | India | Medical | #59 |
| Top Free | Hong Kong SAR China | Medical | #80 |

## Diagnosaurus® DDx Discovered Keywords
- mcgraw hill learnsmart
- dx
- internal medicine
- unbound
- the hills fitness
- differential diagnosis
- diagnosis
- diagnosaurus® ddx

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## Diagnosaurus® DDx Available In
- [United States](https://apptail.io/app/diagnosaurus-ddx-wRO/united-states)
- [Canada](https://apptail.io/app/diagnosaurus-ddx-wRO/canada)
- [Brazil](https://apptail.io/app/diagnosaurus-ddx-wRO/brazil)
- [Japan](https://apptail.io/app/diagnosaurus-ddx-wRO/japan)
- [Netherlands](https://apptail.io/app/diagnosaurus-ddx-wRO/netherlands)
- [Mexico](https://apptail.io/app/diagnosaurus-ddx-wRO/mexico)
- [Australia](https://apptail.io/app/diagnosaurus-ddx-wRO/australia)
- [United Kingdom](https://apptail.io/app/diagnosaurus-ddx-wRO/united-kingdom)
- [India](https://apptail.io/app/diagnosaurus-ddx-wRO/india)
- [Spain](https://apptail.io/app/diagnosaurus-ddx-wRO/spain)
- [New Zealand](https://apptail.io/app/diagnosaurus-ddx-wRO/new-zealand)
- [Italy](https://apptail.io/app/diagnosaurus-ddx-wRO/italy)
- [Colombia](https://apptail.io/app/diagnosaurus-ddx-wRO/colombia)
- [Saudi Arabia](https://apptail.io/app/diagnosaurus-ddx-wRO/saudi-arabia)
- [Switzerland](https://apptail.io/app/diagnosaurus-ddx-wRO/switzerland)
- [Portugal](https://apptail.io/app/diagnosaurus-ddx-wRO/portugal)
- [Malaysia](https://apptail.io/app/diagnosaurus-ddx-wRO/malaysia)
- [Peru](https://apptail.io/app/diagnosaurus-ddx-wRO/peru)
- [Chile](https://apptail.io/app/diagnosaurus-ddx-wRO/chile)
- [Greece](https://apptail.io/app/diagnosaurus-ddx-wRO/greece)
- [Türkiye](https://apptail.io/app/diagnosaurus-ddx-wRO/turkey)
- [France](https://apptail.io/app/diagnosaurus-ddx-wRO/france)
- [Israel](https://apptail.io/app/diagnosaurus-ddx-wRO/israel)
- [Philippines](https://apptail.io/app/diagnosaurus-ddx-wRO/philippines)
- [South Africa](https://apptail.io/app/diagnosaurus-ddx-wRO/south-africa)
- [Germany](https://apptail.io/app/diagnosaurus-ddx-wRO/germany)
- [Ireland](https://apptail.io/app/diagnosaurus-ddx-wRO/ireland)
- [Denmark](https://apptail.io/app/diagnosaurus-ddx-wRO/denmark)
- [Thailand](https://apptail.io/app/diagnosaurus-ddx-wRO/thailand)
- [Sweden](https://apptail.io/app/diagnosaurus-ddx-wRO/sweden)
- [Argentina](https://apptail.io/app/diagnosaurus-ddx-wRO/argentina)
- [Belgium](https://apptail.io/app/diagnosaurus-ddx-wRO/belgium)
- [Pakistan](https://apptail.io/app/diagnosaurus-ddx-wRO/pakistan)
- [China](https://apptail.io/app/diagnosaurus-ddx-wRO/china)
- [Kuwait](https://apptail.io/app/diagnosaurus-ddx-wRO/kuwait)
- [Romania](https://apptail.io/app/diagnosaurus-ddx-wRO/romania)
- [Austria](https://apptail.io/app/diagnosaurus-ddx-wRO/austria)
- [Croatia](https://apptail.io/app/diagnosaurus-ddx-wRO/croatia)
- [Indonesia](https://apptail.io/app/diagnosaurus-ddx-wRO/indonesia)
- [Ecuador](https://apptail.io/app/diagnosaurus-ddx-wRO/ecuador)
- [Hong Kong SAR China](https://apptail.io/app/diagnosaurus-ddx-wRO/hong-kong)
- [Norway](https://apptail.io/app/diagnosaurus-ddx-wRO/norway)
- [Russia](https://apptail.io/app/diagnosaurus-ddx-wRO/russia)
- [Jordan](https://apptail.io/app/diagnosaurus-ddx-wRO/jordan)
- [South Korea](https://apptail.io/app/diagnosaurus-ddx-wRO/south-korea)
- [Vietnam](https://apptail.io/app/diagnosaurus-ddx-wRO/vietnam)
- [United Arab Emirates](https://apptail.io/app/diagnosaurus-ddx-wRO/united-arab-emirates)
- [Poland](https://apptail.io/app/diagnosaurus-ddx-wRO/poland)
- [Ukraine](https://apptail.io/app/diagnosaurus-ddx-wRO/ukraine)
- [Lebanon](https://apptail.io/app/diagnosaurus-ddx-wRO/lebanon)
- [Egypt](https://apptail.io/app/diagnosaurus-ddx-wRO/egypt)
- [Singapore](https://apptail.io/app/diagnosaurus-ddx-wRO/singapore)
- [Taiwan](https://apptail.io/app/diagnosaurus-ddx-wRO/taiwan)
- [Honduras](https://apptail.io/app/diagnosaurus-ddx-wRO/honduras)
- [Ghana](https://apptail.io/app/diagnosaurus-ddx-wRO/ghana)
- [Cyprus](https://apptail.io/app/diagnosaurus-ddx-wRO/cyprus)
- [Dominican Republic](https://apptail.io/app/diagnosaurus-ddx-wRO/dominican-republic)
- [Nepal](https://apptail.io/app/diagnosaurus-ddx-wRO/nepal)
- [Botswana](https://apptail.io/app/diagnosaurus-ddx-wRO/botswana)
- [British Virgin Islands](https://apptail.io/app/diagnosaurus-ddx-wRO/british-virgin-islands)
- [Sri Lanka](https://apptail.io/app/diagnosaurus-ddx-wRO/sri-lanka)
- [Panama](https://apptail.io/app/diagnosaurus-ddx-wRO/panama)
- [Uzbekistan](https://apptail.io/app/diagnosaurus-ddx-wRO/uzbekistan)
- [Luxembourg](https://apptail.io/app/diagnosaurus-ddx-wRO/luxembourg)
- [Slovakia](https://apptail.io/app/diagnosaurus-ddx-wRO/slovakia)
- [Finland](https://apptail.io/app/diagnosaurus-ddx-wRO/finland)
- [Hungary](https://apptail.io/app/diagnosaurus-ddx-wRO/hungary)
- [Estonia](https://apptail.io/app/diagnosaurus-ddx-wRO/estonia)
- [Algeria](https://apptail.io/app/diagnosaurus-ddx-wRO/algeria)
- [Jamaica](https://apptail.io/app/diagnosaurus-ddx-wRO/jamaica)
- [Kazakhstan](https://apptail.io/app/diagnosaurus-ddx-wRO/kazakhstan)
- [Lithuania](https://apptail.io/app/diagnosaurus-ddx-wRO/lithuania)
- [Latvia](https://apptail.io/app/diagnosaurus-ddx-wRO/latvia)
- [Madagascar](https://apptail.io/app/diagnosaurus-ddx-wRO/madagascar)
- [North Macedonia](https://apptail.io/app/diagnosaurus-ddx-wRO/north-macedonia)
- [Malta](https://apptail.io/app/diagnosaurus-ddx-wRO/malta)
- [Czechia](https://apptail.io/app/diagnosaurus-ddx-wRO/czechia)
- [Nigeria](https://apptail.io/app/diagnosaurus-ddx-wRO/nigeria)
- [Belarus](https://apptail.io/app/diagnosaurus-ddx-wRO/belarus)
- [Oman](https://apptail.io/app/diagnosaurus-ddx-wRO/oman)
- [Brunei](https://apptail.io/app/diagnosaurus-ddx-wRO/brunei)
- [Paraguay](https://apptail.io/app/diagnosaurus-ddx-wRO/paraguay)
- [Qatar](https://apptail.io/app/diagnosaurus-ddx-wRO/qatar)
- [Armenia](https://apptail.io/app/diagnosaurus-ddx-wRO/armenia)
- [Bahrain](https://apptail.io/app/diagnosaurus-ddx-wRO/bahrain)
- [Bulgaria](https://apptail.io/app/diagnosaurus-ddx-wRO/bulgaria)
- [Slovenia](https://apptail.io/app/diagnosaurus-ddx-wRO/slovenia)
- [Azerbaijan](https://apptail.io/app/diagnosaurus-ddx-wRO/azerbaijan)
- [Tunisia](https://apptail.io/app/diagnosaurus-ddx-wRO/tunisia)
- [Uganda](https://apptail.io/app/diagnosaurus-ddx-wRO/uganda)
- [Angola](https://apptail.io/app/diagnosaurus-ddx-wRO/angola)
- [Iceland](https://apptail.io/app/diagnosaurus-ddx-wRO/iceland)
- [Guyana](https://apptail.io/app/diagnosaurus-ddx-wRO/guyana)
- [Belize](https://apptail.io/app/diagnosaurus-ddx-wRO/belize)
- [Venezuela](https://apptail.io/app/diagnosaurus-ddx-wRO/venezuela)
- [Cayman Islands](https://apptail.io/app/diagnosaurus-ddx-wRO/cayman-islands)
- [Senegal](https://apptail.io/app/diagnosaurus-ddx-wRO/senegal)
- [Bermuda](https://apptail.io/app/diagnosaurus-ddx-wRO/bermuda)

---

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