Table 1.

Characteristics of applications evaluated in the study

CharacteristicNumber of ApplicationsPercentage or Range
Platform
 iOS and Android518%
 iOS only1139%
 Android only1243%
Application store ratings
 iOS
  No rating1275%
  0–1
  >1–2
  >2–316%
  >3–416%
  >4–5213%
 Android
  No rating212%
  0–1
  >1–2
  >2–3212%
  >3–4635%
  >4–5741%
Median number of ratings
 iOS00–204
 Android20–38
Number of downloads (Android only)
 10–4916%
 50–9916%
 100–499424%
 500–999424%
 1000–4999529%
 5000–999916%
 10,000 or more16%
Type of developer
 Individual1761%
 For-profit organization725%
 Nonprofit organization414%
Price to download
 Free2175%
 $0.9927%
 $1.9927%
 $2.99 or more310%