Derm DDx vs DermGPT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Derm DDx
This app provides visual, point-of-care guidance for diagnosing skin disorders. It features a large database of high-resolution images, allowing users to compare variations, zoom in, and access clinical history and treatment options for over 160 dermatologic conditions.
- 650+ high-quality dermatology images
- Guidance for 160+ dermatologic conditions
- Side-by-side image variations
- Zoomable high-resolution images
- Clinical history and treatment options
- Cross-referencing to differential diagnoses
- Full text search and custom notes
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The Dermatology DDx app from Unbound Medicine delivers visual, point-of-care guidance for establishing the diagnosis of skin disorders. This powerful, photo-intensive database allows users to search, view side-by-side variations of each skin disorder, easily zoom in on any of the high-resolution images, and instantly link to similar conditions to ensure accurate diagnosis. Each entry also contains clinical history, physical findings, and treatment options. Features of Dermatology DDx include: • 650+ high-quality images presented with common variations in presentation • Point-of-care guidance for 160+ dermatologic conditions • Cross reference links to differential diagnoses • History and treatment within each entry • Appendix charting potencies of topical steroids • Highlight and make custom notes within entries • Full Text Search to find topics quickly • Favorites for ’bookmarking’ important entries Authors: by James G. Dinulos MD, M. Shane Chapman MD, Andrew Eugene Werchniak MD, Dorothea T. Barton MD, Thomas P. Habif MD Publisher: Elsevier Powered by: Unbound Medicine Unbound Privacy Policy: www.unboundmedicine.com/privacy Unbound Terms of Use: https://www.unboundmedicine.com/end_user_license_agreement
DermGPT
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DermGPT provides AI-powered dermatology decision support for clinicians. Ask clinical questions, review differential considerations, analyze uploaded photos and documents, and get cited answers grounded in dermatology knowledge. Use DermGPT to explore complex cases, triage common questions, and review supporting references. DermGPT is for informational and clinical support purposes only and is not a substitute for professional medical judgment or diagnosis.
Screenshots
Verdict
The clearest difference is in-app purchases: DermGPT at none against Derm DDx's 1. DermGPT also leads on update cadence (every 8 days vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Derm DDx sells 1 one-off in-app purchase. DermGPT asks for nothing beyond the download.
Derm DDx ships an update every 5 months, DermGPT every 8 days. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | Derm DDx | DermGPT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 5 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 10 MB | 33 MB |
| Age rating | 17+ | 12+ |
| Developer | Unbound Medicine, Inc. | Kaman Biotechnology, LLC |
In-app purchases
Derm DDx
- Dermatology DDx$69.99
DermGPT
No in-app purchases
Questions
Is Derm DDx free?
Is DermGPT free?
Do Derm DDx or DermGPT have ads?
Which is updated more often, Derm DDx or DermGPT?
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