UseLink by LinkApp LLC is a social networking application designed for iPhone users. It focuses on ensuring the safety of individuals during activities such as hiking, traveling, or meeting new people. The app allows users to share their real-time location with trusted contacts every two minutes, providing peace of mind to those concerned about their safety.

With UseLink, users have the flexibility to control when their location is shared by easily toggling the location broadcast on or off. In case of emergencies, trusted contacts can quickly share the user's location history with authorities. The free version offers features like broadcasting location, adding one trusted user, and storing location history for 7 days. For additional functionality, users can opt for the Link Unlimited subscription at $0.99 per month, offering features like unlimited Link requests, unlimited trusted users, and ad-free experience.