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
I can see this being useful, but it needs some work. I loaded an mp3 file of an organ part I am trying to learn. It is just the organ, no other instruments to filter. I’m on an iPad Air 4. The piano roll is so light and small I can hardly see it. That needs to be brightened up a good bit to make it visible. I like that you can slow it down, but it is just too hard to see. Hopefully the developer can fix this or offer a way to adjust the view. It would change my rating considerably. It is also possible that the app is confused by the Wurlitzer effect on organ parts.
Useful with Problems
An0nymous :D
I could use this to visualize many YouTube songs for free. However, the app doesn’t provide a very clear visualization for audios without high definition sound. I do like the free 30 songs I get monthly to polynize, and the crazy cheap subscription at only a couple dollars, but overall I would recommend this.
Oops
jaygrizman
Error in processing YouTube says ... "Oops, new song ... " Having played with this app for 5 mins ... it seems like all the features are paywalled (no free trial) or simply broken.
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).
Version 2.3
The developer, Arturo Camacho Lozano, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Purchases
Location
Contact Info
Identifiers
Usage Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
