BluePiano

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+ redesigned from scratch
+ improved usability
+ enhanced Bluetooth connectivity
+ based on Google keyboard layout
+ adjustable device commands for Bluetooth devices
+ adjustable text modules
+ integrated barcode camera scanner
+ integrated NFC reader
+ many new data modifiers
+ supports in-app purchases
+ current Android permission system
+ many other useful options (clipboard, swipe to scan, adjustable scanner keys, use soft- and hardware keyboard simultaneously, password protection, etc.)