Table 1.

Features of the mHealth apps

#	mHealth App	Frequency of App Use	Features of the App
1	uSafeUS	Acutely, during times of imminent threat or violence	• Designed for college women to assist in obtaining help during times of violence, imminent harm, and resources specific to sexual/dating violence. • The app developer agreed to tailor the app for our participant population with a default tab named “demo college” for our participants for study use. • When participants accessed, they were able to use features such as triggering fake calls or texts to give them a reason to leave an area. Another feature was to alert trusted friends or family when participants did not get home or to their destination on time.
2	Nice Sex Tracker	Daily, as applicable	• Tracks sexual partners, locations, activities, and STDs in a discreet and nonjudgmental style. • Provides analytics of sexual health and behaviors and provides resources information, where to get STDs testing. • Participants were instructed to interact with app daily. There are tabs within the app to input time, activities, partners, location, and barrier methods within sexual encounters. • Tracking also includes sexual intimacy activities, lab or test results, and information about partners.