What smartphone apps exist to support recovery from opioid use disorder? A content analysis of publicly available opioid-related smartphone apps

Table 1 App characteristics and user appraisals of apps providing OUD recovery support (n = 161)

	Total n = 161		iOS n = 104		Android n = 57		Group Difference
	M / % / Md	(SD/n/IQR)	M / % / Md	(SD/n/IQR)	M / % / Md	(SD/n/IQR)	p
App Characteristics
Size, MB, M(SD) ^a	-	-	65.1	(48.84)	-	-	-
Price ^b
apps with no cost, %(n)	94.4	(152)	93.3	(97)	96.49	(55)	0.49
if any cost, price in $, M(SD)	$6.66	$3.71	$7.13	$4.10	$4.99	$1.41
Content Rating 17+/Mature 17+, %(n)	29.8	(48)	41.3	(43)	8.8	(5)	<.0001
Recency of updates, %(n)
updated within the past 6 months	46.0	(74)	50.0	(55)	38.60	(22)	0.19
updated more than 2 years ago	25.5	(41)	20.2	(21)	35.09	(20)	0.06
App user appraisals
App rating score, range 1(worst) to 5 (best), M(SD)	3.56	(1.9)	3.80	(1.8)	3.11	(2.0)	0.03
Number of reviews, Md [IQR]	21.0	[0, 326]	11.5	[0, 184]	75.0	[0, 611]	0.38
Min number of installs, Md [IQR] ^c	-	-	-	-	5000.0	[1,000, 50,000]	-

Note: n = 15 apps had versions available on Android and Apple platforms; when both existed, the Apple values were used. For group comparisons, apps that had versions available on Android and Apple platforms were counted as Apple apps; ^a = not reported for Android apps; ^b = Price indicates initial cost to download app, does not include payment for in-app content; ^c = not reported by the Apple App Store; Google Play only reported minimum installs.

ISSN: 1940-0640