JamKey: Key & BPM Finder

JamKey is built for musicians, guitarists, producers, songwriters, and anyone who needs to understand what they’re hearing fast. Whether you are learning a song, practicing over a track, preparing to jam, or trying to find the right scale to solo with confidence, JamKey helps you identify the musical key and BPM of a song in seconds.

Record audio through your microphone or upload a file from your device, and JamKey analyzes the track using advanced harmonic detection. In just moments, you can see the song’s key, tempo, and the musical information you need to play with more confidence and less guesswork.

► Instantly detect the key and BPM of any song • Record live with your microphone or upload an audio file • Analyze at least 15 seconds of audio to identify the song’s musical key • Detect BPM so you can quickly understand the tempo of the track • Great for practice, rehearsal, songwriting, covers, and learning songs by ear

► Transpose keys with ease in Basic • Shift the detected key up or down by semitones • Instantly see the new key after transposition • Useful for changing songs to match your vocal range, instrument preference, or practice goals • Quickly explore alternate keys without doing the theory manually

► Understand what to play with Premium insights • Unlock scale recommendations based on the analyzed song • See mode suggestions that help guide your improvisation and lead playing • Discover options like major, minor, and modal approaches that fit the track • Designed to help players move from detection to action

► Visual fretboard guidance for guitar players • View a guitar fretboard that maps out playable notes for the recommended key or scale • Use the visual layout to find notes faster and start playing immediately • Ideal for soloing, noodling, writing leads, or practicing scale shapes in context

► Play for the feeling, not just the theory • JamKey does more than name the scale • Premium guidance also helps describe the feel or mood associated with different scale and mode options • Understand whether a recommendation feels darker, brighter, more resolved, more expressive, or more tense • Helpful for musicians who want to choose notes based on emotion as much as theory

► Save your progress with analysis history • Revisit previous analyses anytime • Keep track of songs you have studied, practiced, or transposed • Build a more useful practice workflow over time

What’s included in Basic • Upload audio or record with your microphone • Detect musical key • Detect BPM • Transpose keys by semitone • Access analysis history

What’s included in Premium • Scale recommendations • Mode guidance • Guitar fretboard note visualization • Feel-based musical insight for what to play

JamKey helps remove the friction between hearing a song and knowing how to play with it. Instead of guessing the key, searching for tempo, or wondering which scale will work, you can get the answers quickly and keep your focus on making music.

Subscription Premium is available as a monthly subscription. Payment is charged to your Apple ID at confirmation of purchase. Subscription renews automatically unless canceled at least 24 hours before the end of the current period. You can manage and cancel your subscription anytime in your Apple account settings.

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