Strum-strum Virtual Guitar App in App Store

I have just released my first iOS app, Strum-strum, in the App Store.  Strum-strum is a virtual guitar that allows you to program any chords you like, organize them into groups and play lightning-fast rhythms on your mobile device.  Additionally, you can play the strings individually (finger-style) or do slow strums by swiping up and down over the fretboard.  Here is the description as seen at the App Store:

The world's fastest guitar app! Whether you are an experienced performer/songwriter or a complete beginner, Strum-strum has everything you need to play along with your favorite songs, compose new ones, or just have fun.  

Features:  

- Real guitar sounds  

- Chord library containing standard chords  

- Intuitive chord editor for creating, modifying and saving any chord  

- Group editor for creating and saving custom chord groups  

- Alternate, user definable tunings  

- Low latency chord and single string playing; Strum-strum is as quick as you are  

- Supports high-speed flamenco techniques 

Strum-strum is compatible with all iPhone, iPad, and iPod Touch devices running iOS 7.0 and higher.

You can view a quick demonstration video here: Strum-strum demo

The website for Strum-strum is located here: http://zachwestfall.com/strum-strum

This app is free, so check it out!