Table 2.

Mobile App Rating Scale subscale summary scores for app cost and duration since last update (N=53).

Mobile App Rating Scale subscale	Cost				Duration since update
	Free (n=47), mean (SD)	Paid (n=6), mean (SD)	P value	Less than 6 months, mean (SD)		More than 6 months, mean (SD)	P value
Engagement	2.9 (0.63)	2.6 (0.61)	.32	3.0 (0.80)		2.7 (0.48)	.16
Functionality	4.0 (0.58)	3.8 (0.58)	.53	4.0 (0.41)		4.0 (0.49)	.95
Esthetics	3.1 (0.70)	3.1 (0.81)	.94	3.3 (0.51)		3.0 (0.35)	.24
Information quality	2.8 (0.80)	2.3 (0.74)	.15	2.9 (1.26)		2.6 (1.02)	.38
Subjective quality	2.2 (0.79)	1.9 (0.86)	.42	2.4 (0.75)		2.1 (0.54)	.32