From: The evolution of mobile apps for asthma: an updated systematic assessment of content and tools
 | 2011 (n = 78) | New 2013 (n = 92) ¤ | All 2013 (n = 147) ¤ | |||
---|---|---|---|---|---|---|
Characteristic | Yes | % | Yes | % | Yes | % |
Platform | Â | Â | Â | Â | Â | Â |
Android only | 32 | 41% | 52 | 57% | 73 | 50% |
iOS only | 40 | 51% | 28 | 30% | 57 | 39% |
Both | 6 | 8% | 12 | 13% | 17 | 12% |
Cost | Â | Â | Â | Â | Â | Â |
Free | 26 | 33% | 59 | 64% | 80 | 54% |
Paid-for | 52 | 67% | 33 | 36% | 67 | 46% |
Median | £1.27 | – | £0.89 | – | £1.12 | – |
Country of origin †|  |  |  |  |  |  |
US | 24 | 31% | 31 | 34% | 52 | 35% |
UK | 5 | 6% | 6 | 7% | 8 | 5% |
India | 7 | 9% | 7 | 8% | 8 | 5% |
Australia | 3 | 4% | 4 | 4% | 7 | 5% |
Other | 10 | 13% | 24 | 26% | 33 | 22% |
Unknown | 29 | 37% | 20 | 22% | 39 | 27% |
Content orientation | Â | Â | Â | Â | Â | Â |
Conventional medicine only | 56 | 72% | 59 | 64% | 101 | 69% |
Complementary/alternative medicine only | 15 | 19% | 17 | 18% | 26 | 18% |
Mixed | 7 | 9% | 16 | 17% | 20 | 14% |
Audience targeting ‡ |  |  |  |  |  |  |
Children or young adults | 2 | 3% | 7 | 8% | 8 | 5% |
Parents or caregivers | 3 | 4% | 15 | 16% | 19 | 13% |
No audience stated | 73 | 94% | 73 | 79% | 123 | 84% |
Other features | Â | Â | Â | Â | Â | Â |
Adverts | 14 | 18% | 31 | 34% | 39 | 27% |
Social sharing | 13 | 17% | 35 | 38% | 61 | 41% |
Cloud storage | 3 | 4% | 10 | 11% | 16 | 11% |
Clinical disclaimer | 32 | 41% | 37 | 40% | 55 | 37% |
In-app help | 14 | 18% | 28 | 30% | 43 | 29% |
Online help | 5 | 6% | 6 | 7% | 10 | 7% |