VOCal is a classical office calculator with avirtual tape to print all operations. When operating in childrenmode, the additions, substractions and multiplications arepresented in columns as children are used to compute. The optionalvoice option turns on/off the reading or spelling of the numbersand operations.

Common features:
* Common math operations (+, -, x, /, %, inv)
* One memory register
* Virtual tape presenting all executing operations
* Landscape/portrait layouts
* Left/right-handed landscape layouts
* Haptic feedback (optional)

Virtual tape features:
* Printing of executed operations
* Double press the C key to clear the tape
* Kid mode to print base operations using school layout
* Colored for easy reading

Voice features:
* May be turned on/off
* All keys are spelled
* All results are either spelled/read (option)
* Long tap a virtual tape line to read/spell the operation

See http://vocal.lsrodier.net for furtherdetails.