However, Mr McGuigan's fiancee Nicci Prestage, 37, has urged the court not to be swayed by the claims of the defence.

BBC: Ex-soldier Danny Fitzsimons awaits Iraq murder verdict

Nicci Prestage, from Droylsden, Greater Manchester, was due to marry 37-year-old Paul McGuigan in 2010 after giving birth to his child.

BBC: Danny Fitzsimons says 'only God' can judge him

Along with Michael Flexer and designer Nicci Gabriel, the bootstrapped company Duck Duck Moose was founded in 2008, and got to work building an app especially for tykes.

FORBES: Duck Duck Moose: How To Do UX Design, When The User Is A Preschooler