1. A computer-implemented method comprising: displaying, on a touchscreen of a user device, a first browse wheel having a circular shape and comprising a plurality of category regions within the first browse wheel, each category region associated with an application category and having a visual representation of the associated application category; receiving a user selection of an application category, the user selection of the application category comprising a touchscreen interaction with the first browse wheel; displaying, in response to the received user selection, a second browse wheel having a circular shape and comprising a plurality of subcategory regions within the second browse wheel, each subcategory region associated with an application subcategory of the selected application category and including a visual representation of the associated application subcategory, wherein a center of the second browse wheel is at a first location of the touchscreen; receiving a user selection of an application subcategory, the user selection of the application subcategory comprising a touchscreen interaction with the second browse wheel; generating, in response to the received user selection of the application subcategory, an application search query using the selected application category and the selected application subcategory; and in response to receiving search results corresponding to the application search query, displaying a search results interface, wherein displaying the search results interface includes: displaying the search results, wherein the search results include a set of applications; and displaying only a portion of the second browse wheel, wherein the portion of the second browse wheel (i) is centered at a second location of the touchscreen that is different than the first location, (ii) is less than an entirety of the second browse wheel, (iii) includes at least the subcategory region associated with the selected application subcategory, and (iv) is adjoining an edge of the touchscreen of the user device.
5. The method of claim 1 , wherein receiving the user selection of an application category comprises: detecting a tapping gesture at a position inside a category region; and selecting the application category associated with the category region in which the tapping gesture was detected.