# Diagnosaurus® DDx vs Pharma AI

The clearest difference is price: Diagnosaurus® DDx at Free against Pharma AI's $0.99. Diagnosaurus® DDx also leads on rating (4.8 vs 3.4) and ratings volume (2.5K vs 5). Pharma AI's advantage is update cadence (every 6 weeks vs every 10 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Diagnosaurus® DDx is free to download; Pharma AI costs $0.99 up front. Diagnosaurus® DDx sells 1 one-off in-app purchase and Pharma AI sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Diagnosaurus® DDx holds the better App Store score, 4.8 against 3.4. That said, the two scores are not equally well evidenced: Diagnosaurus® DDx has 2.5K ratings behind it against 5, so its average is the more settled of the two.

Diagnosaurus® DDx ships an update every 10 months, Pharma AI every 6 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | Diagnosaurus® DDx | Pharma AI |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.8 (2.5K ratings)](https://appshunter.io/ios/app/diagnosaurus-ddx/id833728910/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/pharma-ai-chatbot/id6450954272/reviews) |
| Number of ratings | **2.5K** | 5 |
| Positive reviews | 53.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 19 MB | 26 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) | [Malik Hamza Khalid](https://appshunter.io/developer/1679723774) |

## What reviewers say

### Diagnosaurus® DDx

[App page](https://appshunter.io/ios/app/diagnosaurus-ddx/id833728910)

This medical reference tool assists healthcare professionals in performing differential diagnoses quickly and confidently. It offers a searchable database of over 1,000 diagnoses, cross-referenced for related conditions, and allows users to save favorite entries and make custom notes.

**Highlights:** Over 1,000 differential diagnoses, Search by organ system, symptom, or disease, See Related DDx feature, Save favorite entries, Highlight and make custom notes, Universal Index Search

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diagnosaurus DDx | $4.99 | one-time |

**What reviewers like**

- 👍 User-friendly interface
- 🚀 Quick access to differential diagnoses
- 💡 Helpful for building differential diagnoses
- 👍 Comprehensive coverage of conditions
- 👍 Useful for medical students and practitioners

**What reviewers complain about**

- 🐛 Lack of in-depth information
- 🐛 Incomplete differential diagnoses
- 🐛 Lack of links to explain conditions
- 🐛 Requires in-app purchase to access full content
- 🐛 Unreliable update mechanism

**Reported bugs**

- Subscription issues and inability to restore purchases
- Blank pages and non-functional content
- Compatibility issues with newer iOS versions

**Requested features**

- Add ability to edit or add custom differential diagnoses
- Improve search functionality and navigation
- Provide more detailed information on conditions
- Integrate with other medical resources and databases
- Improve support for older devices and iOS versions


### Pharma AI

[App page](https://appshunter.io/ios/app/pharma-ai-chatbot/id6450954272)

Get reliable medical and pharmaceutical information instantly. Ask questions about medications, health tips, and drug interactions in multiple languages. Powered by advanced AI, this app provides comprehensive answers for informed health decisions.

**Highlights:** Ask medical queries in multiple languages, Detailed medication insights (uses, dosages, side effects), Personalized health tips and advice, Instant, real-time responses, Reliable information powered by OpenAI, User-friendly interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $7.99 | per 7 days |
| Premium Pro | $24.99 | per month |


## Frequently asked questions

### Is Diagnosaurus® DDx free?

Diagnosaurus® DDx is free to download, with in-app purchases available.

### Is Pharma AI free?

Pharma AI costs $0.99, and also offers in-app purchases.

### Which has better reviews, Diagnosaurus® DDx or Pharma AI?

Diagnosaurus® DDx is rated higher. Diagnosaurus® DDx averages 4.8 out of 5 from 2.5K ratings, while Pharma AI averages 3.4 from 5 ratings.

### Do Diagnosaurus® DDx or Pharma AI have ads?

Neither Diagnosaurus® DDx nor Pharma AI shows ads.

### Which is updated more often, Diagnosaurus® DDx or Pharma AI?

Diagnosaurus® DDx ships an update every 10 months, and Pharma AI every 6 weeks. Most recently, Diagnosaurus® DDx was updated on October 30, 2026 and Pharma AI on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*