Table 2.

App attributes/features from 2019 (2018).

	Anxiety n=20 2019 (2018)	Schizophrenia n=20 2019 (2018)	Depression n=20 2019 (2018)	Diabetes n=20 2019 (2018)	Addiction n=20 2019 (2018)	Hypertension n=20 2019 (2018)	Average n=120 2019 (2018)
Surveys (in)	70% (60%)	35% (35%)	75% (70%)	65% (40%)	45% (30%)	40% (40%)	55% (45.8%)
GPS (in)	20% (30%)	5% (20%)	40% (30%)	35% (70%)*	15% (30%)	0% (15%)	19.2% (32.5%)
Call/Text logs (in)	5% (10%)	0% (0%)	0% (10%)	0% (10%)	0% (15%)	0% (0%)	0.8% (7.5)%*
Camera (in)	20% (25%)	15% (0%)	20% (15%)	40% (45%)	20% (10%)	5% (0%)	20% (15.8%)
Microphone (in)	15% (25%)	0% (5%)	15% (20%)	5% (5%)	5% (5%)	0% (5%)	6.7% (10.8%)*
Device integration (eg, smartwatch) (in)	10% (30%)	15% (10%)	5% (25%)	55% (55%)	0% (0%)	15% (25%)	16.7% (24.2%)
Diary (in)	55% (40%)	15% (20%)	55% (50%)	55% (25%)	40% (30%)	20% (25%)	40% (31.7%)
Contact list (in)	15% (25%)	15% (5%)	5% (25%)	15% (45%)*	5% (15%)	5% (5%)	10% (20%)
Steps/Other Apple HealthKit or Google Fit Data (in)	20% (25%)	10% (10%)	15% (25%)	65% (60%)	0% (0%)	55% (35%)	27.5% (25.8%)
Games (in)	15% (10%)	10% (10%)	5% (10%)	0% (0%)	20% (15%)	5% (10%)	9.2% (9.2%)
Pop-up messages (out)	85% (75%)	25% (20%)	85% (80%)	70% (60%)	75% (70%)	30% (30%)	61.7% (55.8%)*
Reference information (out)	70% (65%)	85% (90%)	55% (80%)	70% (70%)	30% (70%)*	30% (70%)*	56.7% (74.2%)
Social network connections (out)	20% (30%)	20% (20%)	10% (25%)	30% (25%)	40% (40%)	0% (0%)	20% (23.3%)
Analysing data to return insights (out)	80% (80%)	15% (20%)	80% (80%)	65% (75%)	75% (75%)	55% (50%)	61.7% (63.3%)
Linking to formal care or coaching	35% (30%)	5% (20%)	30% (45%)	5% (30%)	30% (25%)	0% (5%)	17.5% (25.8%)
In app rewards or badges	30% (40%)	0% (5%)	10% (20%)	20% (0%)*	55% (70%)	0% (0%)	19.2% (22.5%)
In app interventions (eg, CBT)	80% (65%)	5% (10%)	60% (55%)	30% (60%)	25% (30%)	5% (5%)	34.2% (37.5%)
Mean flag rating	1.05 (1.2)*	0.55 (0.3)*	0.95 (0.9)	1.4 (1.4)	0.75 (0.9)*	0.75 (0.55)	0.91 (0.88)

CBT, cognitive behavioural therapy.