
| Characteristic | Apps | Mobile web |
|---|---|---|
| - | - | - |
| - | - | - |
| - | - | - |
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Source
Release date
August 2015
Region
United States
Survey time period
2013: March 2013; 2014: January to March 2014; 2015: June 2015
Special properties
iOS and Android devices
Supplementary notes
2013 and 2014 figures from previous publication
Citation formats









