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. Author manuscript; available in PMC: 2014 Dec 1.
Published in final edited form as: Am J Prev Med. 2013 Dec;45(6):10.1016/j.amepre.2013.07.008. doi: 10.1016/j.amepre.2013.07.008

Table 1.

Overview of Popular iPhone and Android Apps, % (n) unless otherwise indicated

All (N=98)a iPhone (n=47) Android (n=51)

Average Adherence Score (SD) 12.9 (6.8) 14.2 (8.2) 11.7 (5.1)

Average Price, $ (SD) 1.30 (4.29) 2.46 (5.90) 0.23 (0.91)*

Average User Rating (SD) 3.4 (0.9) 3.2 (1.0) 3.7 (0.8)*

Type of App

Calculator 38.8 (38) 34.0 (16) 43.1 (22)

Hypnosis 17.3 (17)a 25.5 (12) 9.8 (5)

Rationing 15.3 (15) 17.0 (8) 13.7 (7)

Tracker 12.2 (12) 10.6 (5) 13.7 (7)

Informational 6.1 (6) 6.4 (3) 5.9 (3)

Game 3.1 (3) 2.1 (1) 3.9 (2)

Lung Health Tester 2.0 (2) 2.1 (1) 2.0 (1)

Other 5.1 (5) 2.1 (1) 7.8 (4)

Total Downloads

1,000–5,000 n/a n/a 43.1 (22)b
5,000–10,000 21.6 (11)
10,000–50,000 19.6 (10)
50,000–100,000 7.8 (4)
100,000–500,000 7.8 (4)

Adherence to guidelinec

Specific to smoking 94.9 (96) 97.9 (46) 98.0 (50)

Interactive 71.4 (70) 63.8 (30) 78.4 (40)

Advise every user to quit: personalized 67.3 (66) 59.6 (28) 74.5 (38)

Ask for tobacco use status 65.3 (64) 53.2 (25) 78 (39)

Enhance motivation: rewards 50.0 (48) 48.9 (23) 49.0 (25)

Assess willingness to quit 39.8 (39) 42.6 (20) 37.3 (19)

Enhance motivation: risks 31.6 (31) 36.2 (17) 27.5 (14)

Advise every user to quit 23.5 (23) 34.0 (16) 13.7 (7)

Advise every user to quit: clear 23.5 (23) 27.7 (13) 19.6 (10)

Advise every user to quit: strong 23.5 (23) 25.5 (12) 21.6 (11)

Assist with a quit plan: overall 20.4 (20) 29.8 (14) 11.8 (6)

Assist with a quit plan: practical counseling 19.4 (19) 29.8 (14) 9.8 (5)

Assist with a quit plan: intra-treatment social support 17.3 (17) 17.0 (8) 17.6 (9)

Enhance motivation: roadblocks 15.3 (15) 21.3 (10) 9.8 (5)

Text Alerts 12.2 (12) 12.8 (6) 11.8 (6)

Recommend counseling and medicines 5.1 (5) 10.6 (5) 0 (0)

Assist with a quit plan: recommend approved medicines 4.1 (4) 8.5 (4) 0 (0)

Refer to recommended treatment 4.1 (4) 8.5 (4) 0 (0)

Assist with a quit plan: supplementary information 2.0 (2) 2.1 (1) 2.0 (1)

Arrange for follow-up 0.0 (0) 0.0 (0) 0 (0)

Connect to a quitline 0.0 (0) 0.0 (0) 0 (0)

Note: Boldface indicates significance.

a

Two hypnosis apps were present on both the iPhone and Android operating systems.

b

Downloads are reported for the period between November 27, 2011 and February 11, 2012.

c

Adherence is defined as a score of ≥1.5.

*

p<0.01 for comparison between Android and iPhone

n/a, not applicable