Fleetlog is a free Android application designed for aviation enthusiasts to enhance their planespotting experience. This app allows users to track the aircraft they've seen, automatically log details, and monitor their progress with various airlines. Supporting civil, private, and military aviation, Fleetlog utilizes ADS-B data to provide comprehensive coverage. Users can engage in daily challenges, maintaining a streak by spotting at least one aircraft each day, which adds a gamified element to the experience.

Key features include livestream tracking, where users can log aircraft they see during aviation streams, and smart spotting that visually indicates logged planes. The app also boasts an extensive database of special liveries and a community photo database for sharing aviation photography. With crowdsourced accuracy, users can report discrepancies to keep the database current, making Fleetlog a must-have for any serious planespotter.