Outdoor Master is for outdoor enthusiasts to use during hiking, climbing ,camping and other outdoor sports. Features: - Compass: it gives you precise direction and GPS location information, which can lead you to the right way. - Whistle: you can use the whistle to show where you are or ask for help, no need to shout anymore. - Flashlight: just a simple torch that can light up the way in front of you. So you can see it is a three in one app for outdoor enthusiasts, hope it is helpful for you. If you have more need for outdoor sports, you can contact us through [email protected], and we are looking forward for your suggestions.