Fingering Brass for iPhone provides immediate access to fingerings for various brass instruments, offering alternates for each instrument's entire playable range. The app covers a wide array of instruments including F/Bb Double French Horn, Trumpets, Trombones, Euphonium, Baritone, and Tubas. Additionally, a unique feature is the 'Piano' instrument that displays note names, piano locations, and musical notations for up to 5 pitches in different clefs.

For trombones, the app includes position guides for different valve combinations, enhancing the user experience. The app allows users to pick a written note to display fingerings and play concert pitch, as well as reveal notes on the piano. With options to navigate alternate fingerings, play notes repeatedly, and access fingerings without sound, Fingering Brass for iPhone is a valuable tool for brass players of all levels.