By Maria Pedone
July 04, 2013

Safety is a constant concern when traveling, whether you’re hopping in the car for a weekend getaway or backpacking across Europe. Besides being unfamiliar with a location, language barriers can also make communication difficult. Cue new mobile security app, React Mobile.

Free to download for iOS and select Android systems, the app allows you to create a list of emergency contacts (friends, parents, doctors, etc.) that will be instantly notified if danger strikes. Just tap once to “activate your shield” and GPS coordinates of your location will be sent to members on your list, with an option to link your Twitter and Facebook accounts. Have a serious problem? Send a message to police directly from the app. React Mobile has world-travelers covered, with availability in 39 countries and four continents including the U.S., Canada, Mexico, European Union, Australia, China, Japan, Israel, Jamaica, Philippines, Thailand, Brazil, and Argentina.

Even more impressive is the app's “Follow Me” feature ($1.99/month; $19.99/year), which allows contacts to monitor your every step via live GPS-tracking. Set your estimated time of arrival in half-hour, hour, or two-hour increments, and group members will receive an alert when you begin your journey and after you’ve arrived by pressing "I'm Safe." If your shield remains activated past the time limit, an SOS alert will automatically be broadcasted.

While React Mobile is relatively new (it launched in March), its developers are already working on expanding its international availability and increasing the two-hour time limit on trips so users can keep track of all their journeys, worry-free.

Maria Pedone is a digital editorial intern at Travel + Leisure.