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By Daniel Casady

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Key+ is a handy tool for estimating the musical key of digital recordings and live audio. A must-have for musicians and DJ's, Key+ analyzes audio and returns both the key and it's relative major or minor signature.

What's New in Version 2.2

*Updated UI

iPhone Screenshot

iPhone Screenshot 1
iPhone Screenshot 2

Customer Reviews

I like it

Works well, setting sample rate at a longer time helps.
It's not perfect but mostly correct, some songs are very complex and hard for software but most popular music songs work, I use it when playing harmonica!

I want a Refund!!!

This app has not gotten not one key right yet!!!


Hasn't gotten any keys right.

View In iTunes
  • $1.99
  • Category: Music
  • Updated:
  • Version: 2.2
  • Size: 1.7 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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