Fully customizable piano keyboard view with @IBDesignable properties in swift.

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• Swift 3+
• iOS 8.0+
• tvOS 9.0+
• macOS 10.9+

pod 'PianoView'

You need to add this post installer script to your podfile in order to use @IBDesignable libraries with pods.
More information on this cocoapods issue

post_install do |installer|
installer.pods_project.build_configurations.each do |config|
config.build_settings['LD_RUNPATH_SEARCH_PATHS'] = ['$(FRAMEWORK_SEARCH_PATHS)']
end
end

• PianoView is just a regular UIView.
• Either setup inside storyboard or initialize from code.
• Draws desired key count in its view rectangle.
• Could be draw notes on keys with or without octaves.
• You could use octave to show pressed note in physical device.