Maths app targeting UK schools is criticised over premium model

Complaint in US says children being manipulated into paying $100 a year for Prodigy membership perks

A mobile game used by schools to teach maths through a fantasy role-playing world has been accused of unfairly manipulating children into paying more than $100 a year for premium items.

Prodigy, which offers versions for in-school and at-home play, is the centre of a complaint to the US Federal Trade Commission submitted by a coalition of children's rights groups led by the Campaign for a Commercial-Free Childhood (CCFC).