# Contraception vs Diagnosaurus® DDx

The clearest difference is rating: Diagnosaurus® DDx at 4.8 against Contraception's 4.3. Diagnosaurus® DDx also leads on ratings volume (2.5K vs 27) and device support (4 vs 2). Contraception's advantage is in-app purchases (none vs 1) and review sentiment (64% vs 53%). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Diagnosaurus® DDx sells 1 one-off in-app purchase. Contraception asks for nothing beyond the download.

Diagnosaurus® DDx holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Diagnosaurus® DDx has 2.5K ratings behind it against 27, so its average is the more settled of the two. Written reviews complicate that: 64% of Contraception's written reviews are positive against 53% of Diagnosaurus® DDx's, so the app with the better star average is not the one people write more warmly about.

Contraception ships an update every 7 months, Diagnosaurus® DDx every 10 months. The most recent releases landed on October 17, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Contraception | Diagnosaurus® DDx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (27 ratings)](https://appshunter.io/ios/app/contraception/id595752188/reviews) | **[4.8 (2.5K ratings)](https://appshunter.io/ios/app/diagnosaurus-ddx/id833728910/reviews)** |
| Number of ratings | 27 | **2.5K** |
| Positive reviews | **63.6% of reviews** | 53.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 10 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 56 MB | 19 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 17+ |
| Developer | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### Contraception

[App page](https://appshunter.io/ios/app/contraception/id595752188)

This app provides comprehensive guidelines on contraceptive method use based on medical eligibility criteria and selected practice recommendations. It assists healthcare providers in counseling individuals and couples on family planning choices, covering over 60 medical conditions and numerous clinical situations.

**Highlights:** U.S. Medical Eligibility Criteria (MEC), U.S. Selected Practice Recommendations (SPR), Covers over 60 characteristics/conditions, Addresses numerous clinical situations, Aids healthcare provider counseling, Based on CDC Morbidity and Mortality Weekly Report

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Contraception free?

Contraception is free to download, with no in-app purchases.

### Is Diagnosaurus® DDx free?

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

### Which has better reviews, Contraception or Diagnosaurus® DDx?

Diagnosaurus® DDx is rated higher. Contraception averages 4.3 out of 5 from 27 ratings, while Diagnosaurus® DDx averages 4.8 from 2.5K ratings.

### Do Contraception or Diagnosaurus® DDx have ads?

Neither Contraception nor Diagnosaurus® DDx shows ads.

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

Contraception ships an update every 7 months, and Diagnosaurus® DDx every 10 months. Most recently, Contraception was updated on October 17, 2026 and Diagnosaurus® DDx on October 20, 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.*