enable Tuner provides real-time tuning for a range of instruments, with presets for instruments including guitar, bass, violin, cello, saxophone and clarinet in a range of styles and transpositions. The tuner will determine your instrument's current frequency and corresponding musical note, and show you whether your instrument is tuned accurately. Tuning by ear is facilitated by the output play feature which generates the note you are trying to tune to while you are tuning it.