Polynizer: see what you hear

About this app

WHAT CAN YOU DO WITH POLYNIZER - View a piano roll for any song—whether it's on YouTube, stored locally on your device, or played live through your mic. - See precise chord names, guitar chord charts, staff notation, keyboard voicings, and more—customized to your level: basic, intermediate, or advanced. - Customize chord naming: English or Italian note names, jazz symbols, Roman numeral analysis, and more. - Define bars, time signatures, and key signatures to match the song structure. - Detect and adjust the song’s tuning. - Transpose the song to any key—including audio transposition for local files.* - Change playback speed to suit your learning pace. - Export chords and lyrics as a PDF for practice or sharing. *Audio transposition is available only for local audio files, not YouTube videos. HOW TO USE MICROPHONE MODE 1. Select Microphone from the menu and start playing. Polynizer will listen in real time and transcribe the notes into a piano roll. The volume adjusts automatically to your playing level. 2. Press the Record button if you want to save the audio for later use. HOW TO USE YOUTUBE VIDEOS OR LOCAL FILES 1. Choose the song you want to analyze—either a YouTube video or a local audio file. In just a few seconds, Polynizer will display a piano roll with the detected notes. 2. Tap the Play button to listen along. 3. To add a chord, press and hold the Hold for Chord button for the full duration of the chord. Polynizer will suggest up to three chord options. Once you have introduced some chords, you can explore other Polynizer’s great features: set key and time signatures, define bars, adjust speed, and more. With flexible subscription plans, there’s an option for every need. Play the music you love with Polynizer! Privacy policy: https://polynizer.com/privacypolicy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

These are the latest and most exciting features: - Live Piano Roll from Microphone: Get real-time transcriptions of music captured through your device’s mic. You can also record the audio by tapping the Record button. - Cloud or On-Device Processing: Choose between cloud-based analysis or faster, on-device processing (ideal for short songs and high-performance devices).

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1. First observed Aug 19, 2026 · 6:03 AM Free