Dump1090 is an Android application developed by ebcTech that allows you to use your device in combination with a DVB-T USB stick (RTL-SDR) to receive ADS-B data. This information is then displayed on a map, showing the positions of aircraft in real-time.

The app is straightforward to use, and the interface is user-friendly. Once you have connected the DVB-T USB stick to your device, you can launch the app and start receiving ADS-B data. The map displays the positions of aircraft, as well as their altitude, speed, and flight number. It's a great tool for aviation enthusiasts, plane spotters, or anyone interested in tracking flights in real-time.

However, it's essential to note that the app should not be used for navigation purposes, and users should check their local laws to ensure that receiving ADS-B data is legal in their country. In some countries, it is illegal to receive such radio transmissions.

Overall, Dump1090 is an excellent app for anyone interested in tracking aircraft positions in real-time. The app is free and available for download on the Google Play Store.