BrassUp is a free Android app developed by Ideate Games under the Multimedia category, specifically designed to help brass players learn and practice notes and fingerings or slide positions. It is not a musical instrument or synthesizer, but it does offer a free play option that can be fun. The app includes scale exercises in 3/4 and 4/4 time signatures, random notes, and 12 keys to choose from. It also features a learn mode that shows proper fingering as an aid and includes alternate fingerings for each note. BrassUp caters to low brass players as well, as it includes 4-valve and 3+1 valve options. Additionally, the app comes with a fingering look-up for each key, making it a handy tool for both beginners and professionals.