STD Triage Ask dermatologist vs Derm DDx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STD Triage Ask dermatologist
Get anonymous answers from board-certified dermatologists about potential STDs or other skin concerns. Submit photos and questions for a personalized response within 24 hours, with no registration required.
- Anonymous dermatologist consultations
- Photo submission for skin issues
- Response within 24 hours
- No registration required
- Information on treatment and next steps
- Expertise in STDs and intimate area skin problems
Read full descriptionHide full description
Are you worried that you may have a sexually transmitted disease (STD)? STD Triage anonymously connects you to a board-certified dermatologist in under 24 hours. To use, simply download the app, take two pictures of your skin problem (rashes, bumps, intimate issues, redness, spots, etc.) and submit your question. No registration. No hassle. Just an anonymous answer on what to do next. Your personalized answer from our dermatologists will contain medical information about your skin problem: what it most likely is, how it can be treated, and whether or not you should see a dermatologist or a STD testing clinic in-person. _______________________ FEATURES: RESEARCH-BACKED – STD Triage’s technology is backed by 4 peer-reviewed scientific papers and in hospitals. 8-HOUR, 24-HOUR and 48-HOUR RESPONSE TIME GUARANTEED - STD Triage responds within hours. 24/7 online customer support. BOARD-CERTIFIED DERMATOLOGISTS – Dermatologists on STD Triage are board-certified with over 10 years of specialized training at top medical institutions and vetted by a senior medical advisory board. 100% ANONYMOUS – No registration needed. User data is always kept anonymous, encrypted, and on secure servers. SHARE YOUR ANSWER AND JUMP THE QUEUE – 70% of our users get better with over-the-counter medication. For more serious cases, STD Triage recommends a face-to-face with a dermatologist. Use the app to find a dermatologist, pediatrician and pharmacy near you. With an answer from STD Triage, our users see a dermatologist two weeks faster than the US average of 32 days. _______________________ Common concerns include • Herpes simplex virus • Balanitis • Folliculitis (ingrown hair) • Syphilis • Molluscum contagiosum • Genital warts Our on-demand dermatologists are experts at evaluating skin problems. They have already helped over 60,000 users identify and get information about their skin issues, including sexually transmitted diseases, also called sexually transmitted infections (STIs). Common skin problems of the intimate area include balanitis, folliculitis, yeast infections, herpes simplex virus, hemorrhoids, fissures, and genital warts. Symptoms of STDs can include burning, itching, rashes, bumps and redness in the genital area. Your case is kept completely anonymous and secure on STD Triage. We do not require names, email addresses, or phone numbers. STD Triage is the trusted leader in mobile dermatology for sexual health issues. Our brand has been covered by CNN, The Huffington Post, Medgadget and many other news outlets. For any questions about Sexually Transmitted Diseases (STD) Triage, please contact info@firstderm.com DISCLAIMER: Sexually Transmitted Diseases (STD) triage is a medical information service. The medical information provided by our dermatologists is based on the information they are given by users and should not be regarded as a definitive diagnosis of any kind, but merely as complementary information to an initial internet search or other comparable investigation. Our physicians are specialists in dermatology and venereology. STD triage is not a diagnostic service, but can be used for guidance on what can be done in the event of a visual problem. Our doctors and STD triage cannot and do not replace a proper medical consultation. The service does not replace a face-to-face visit to your doctor, and should be treated as a complement to an internet search. Even if the dermatologist recommends a face-to-face visit, our customer surveys show that the relief of knowing what the problem could be is worth the cost of using service. This service is provided by iDoc24 Inc.
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
Read full descriptionHide full description
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
Screenshots
Verdict
The clearest difference is ads: Derm DDx at none against STD Triage Ask dermatologist's shown. STD Triage Ask dermatologist's advantage is update cadence (monthly vs every 5 months) and rating (4.6 vs 4.3). On price, ratings volume, in-app purchases and monetization model 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. STD Triage Ask dermatologist sells 7 one-off in-app purchases and Derm DDx sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
STD Triage Ask dermatologist holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 14 and 6 respectively.
STD Triage Ask dermatologist ships an update monthly, Derm DDx every 5 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | STD Triage Ask dermatologist | Derm DDx |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (14 ratings) — better | 4.3 (6 ratings) |
| Positive reviews | 85.0% of reviews | — |
| Number of ratings | 14 — better | 6 |
| Update frequency | Monthly — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 63 MB | 10 MB |
| Age rating | 17+ | 17+ |
| Developer | iDoc24 Inc | Unbound Medicine, Inc. |
Customer experience
STD Triage Ask dermatologist
Derm DDx
In-app purchases
STD Triage Ask dermatologist
- iDoc24 Information$25.99
- iDoc24 Information$29.99
- iDoc24 Information$32.99
Show 4 moreShow fewer
- iDoc24 Information$35.99
- "Dermatologist Evaluation from Triage"$39.99
- iDoc24 Information$39.99
- iDoc24 Information$54.99
Derm DDx
- Dermatology DDx$69.99
Questions
Is STD Triage Ask dermatologist free?
Is Derm DDx free?
Which has better reviews, STD Triage Ask dermatologist or Derm DDx?
Do STD Triage Ask dermatologist or Derm DDx have ads?
Which is updated more often, STD Triage Ask dermatologist or Derm DDx?
Other comparisons















