https://appagg.com/developer/martijn-ensing/free/?hl=en en AppAgg.com Tue, 21 Apr 2026 16:59:02 GMT Tue, 21 Apr 2026 16:59:02 GMT https://appagg.com/developer/martijn-ensing/free/?hl=en https://appagg.com/i/apple-touch-icon.png https://appagg.com/ios/education/learn-music-theory-with-sonid-39899969.html?hl=en Price: Free (IAP)   
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Version: 3.4.0  
By: Martijn Ensing   
Updated: 2026-04-21 16:59:02 UTC  
Release Date: 2020-01-02 08:00:00 UTC  
Category: iOS Apps › Education  

Description: 
Sonid is a music education app that allows you to learn music theory in a fun and orderly manner. It is different compared to other applications because it focuses on a single subject ... 

AppAgg: 
[ Learn music theory with Sonid ]

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]]> Tue, 21 Apr 2026 16:59:02 GMT https://appagg.com/ios/music/fretty-all-chords-scales-39899920.html?hl=en Price: Free (IAP)   
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Version: 0.5.2  
By: Martijn Ensing   
Updated: 2020-10-27 11:25:55 UTC  
Release Date: 2020-08-12 07:00:00 UTC  
Category: iOS Apps › Music  

Description: 
Did you ever need a complete tool to study and get to know your guitar better? Did you wonder how many versions of a chord you can play? How to play a certain scale? Behold Fretty, ... 

AppAgg: 
[ Fretty - All chords & scales. ]

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]]> Tue, 27 Oct 2020 11:25:55 GMT