The most important rule of traveling, especially when you’re alone, is making sure you’re safety is a priority. If you’re a frequent traveler, having to worry about putting something else in your suitcase is probably the last thing you want. Luckily, there are apps for your mobile device designed to keep you safe, while letting others know where you are if you ever feel uncomfortable. Listed below are the top three apps that, in my opinion, have the best features. All three apps are available for Android and iOS devices and work both internationally and domestically.