Table 1.
Summary of characteristics of included apps, stratified by platform.
| Characteristics | All apps (n=184), n (%) | Android (n=104), n (%) | iOS (n=80), n (%) | P values | |
| Pricing |
|
|
|
|
|
|
|
Free | 143 (77.7) | 92 (89.4) | 50 (62.5) | <.001 |
|
|
No advertisementsa | 95 (66.4) | 55 (59.1) | 40 (80.0) | .01 |
| Personal data |
|
|
|
|
|
|
|
Age | 75 (40.8) | 42 (40.4) | 33 (41.3) | .91 |
|
|
Gender | 75 (40.8) | 41 (39.4) | 34 (42.5) | .67 |
|
|
Height | 71 (38.6) | 44 (42.3) | 27 (33.7) | .24 |
|
|
Weightb | 99 (53.8) | 62 (59.6) | 37 (46.2) | .07 |
| Blood pressure measurements |
|
|
|
|
|
|
|
Side (left or right arm) | 28 (15.2) | 21 (20.2) | 7 (8.8) | .03 |
|
|
Position (eg, sitting, lying) | 26 (14.1) | 20 (19.2) | 6 (7.5) | .02 |
|
|
Date and timeb | 182 (98.9) | 103 (99.0) | 79 (98.8) | .85 |
| Other features |
|
|
|
|
|
|
|
Reminder functionb | 53 (28.8) | 30 (28.8) | 23 (28.7) | .99 |
|
|
Analysis toolb | 158 (85.9) | 92 (88.5) | 66 (82.5) | .25 |
|
|
Data exportb | 120 (65.2) | 60 (57.7) | 60 (75.0) | .02 |
|
|
Data upload from blood pressure meter | 27 (14.7) | 12 (11.5) | 15 (18.7) | .17 |
|
|
Needs Web access to function | 10 (5.4) | 8 (7.7) | 2 (2.5) | .12 |
|
|
Password protection | 43 (23.4) | 20 (19.2) | 23 (28.7) | .13 |
|
|
Data storage (local) | 181 (98.4) | 102 (98.1) | 79 (98.8) | .72 |
|
|
Data storage (cloud) | 19 (10.3) | 15 (14.4) | 4 (5.0) | .04 |
aOnly free apps included; paid apps were presumed to have no advertisements.
bKey app features for self-management based on guidelines and literature.