IMPORTANCE: With advancements in mobile technology, cellular phone-based mobile 
applications (apps) may be used in the practice and delivery of dermatologic 
care.
OBJECTIVE: To identify and categorize the variety of current mobile apps 
available in dermatology for patients and providers.
DESIGN, SETTING, AND PARTICIPANTS: Dermatology-related search terms were queried 
in the online app stores of the most commonly used mobile platforms developed by 
Apple, Android, Blackberry, Nokia, and Windows. Applications were assigned to 
categories based on description. Popularity, price, and reviews were recorded 
and target audiences were determined through websites offering online mobile 
apps.
MAIN OUTCOMES AND MEASURES: Number, type, and price of mobile apps in 
dermatology.
RESULTS: A total of 229 dermatology-related apps were identified in the 
following categories: general dermatology reference (61 [26.6%]), 
self-surveillance/diagnosis (41 [17.9%]), disease guide (39 [17.0%]), 
educational aid (20 [8.7%]), sunscreen/UV recommendation (19 [8.3%]), calculator 
(12 [5.2%]), teledermatology (8 [3.5%]), conference (6 [2.6%]), journal (6 
[2.6%]), photograph storage/sharing (5 [2.2%]), dermoscopy (2 [0.9%]), pathology 
(2 [0.9%]), and other (8 [3.5%]). The most reviewed apps included 
Ultraviolet ~ UV Index (355 reviews), VisualDx (306), SPF (128), iSore (61), and 
SpotMole (50). There were 209 unique apps, with 17 apps existing on more than 1 
operating system. More than half of the apps were offered free of charge (117 
[51.1%]). Paid apps (112 [48.9%]) ranged from $0.99 to $139.99 (median, $2.99). 
Target audiences included patient (117 [51.1%]), health care provider (94 
[41.0%]), and both (18 [7.9%]).
CONCLUSIONS AND RELEVANCE: The widespread variety and popularity of mobile apps 
demonstrate a great potential to expand the practice and delivery of 
dermatologic care.