Checkbox was developed utilizing Visual Studio 2015 and .NET 4.5. It is possible that Visual Studio 2013 may work with Checkbox but this has not been tested. Checkbox at the time of this document does not utilize features of C# 6.0, but will be updated to leverage some of those features starting in 2017.
We suggest that any development machine running Checkbox have Visual Studio 2015, .NET 4.5, and have a local version of SQL Server ( SQL Express will work ) for debugging purposes and testing purposes.