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. 2017 Nov 1;25(3):984–1003. doi: 10.1177/1460458217735676

Table 5.

mHealth apps for OA available in app stores in 2013 and 2016; number of relevant apps/total number of apps.a

Search year Google Play26 Apple iTunes27 BlackBerry World28 Microsoft Store29 Opera Mobile Store30 Total
2013 16/46 5/16 0/0 2/2 1/1 24/65
2016 14/115 11/30 0/0 2/2 0/0 27/147
a

The commercial app reviewed in the original paper in 201325—Osteoarthritis of Knee—was not available in our search in 2016. When we used the link provided by the authors, it returned an error message notifying that the app is not available in the United States. Based on the authors’ affiliation information, we assume that they had access to app stores available in Europe where as we were able to search app stores available in the United States.