Compass is a free application developed by Sandip Bhattacharya, available for Android devices. It is a simple yet powerful compass app that can be used for various outdoor activities. The app is designed to work on a flat surface and away from magnetic interference to ensure accurate results.

One of the key features of Compass is that it requires a Magnetic Sensor inside the device to read the earth's magnetic field. Therefore, the accuracy of the app is dependent on the hardware sensors in the device. The app is easy to use and provides accurate directions.

Overall, Compass is a great app for those who need a reliable compass for outdoor activities. It is free to use, and the developer only requests that users rate the app.