TEXT: Frankie Thevenot, 3, plays with an iPad in his bedroom at his home in Metairie, La. The Campaign for a Commercial-Free Childhood, a Boston-based group, is urging federal investigators to examine the marketing practices of Fisher-Price�s and Open Solution�s mobile apps. It�s the campaign�s first complaint against the mobile app industry as part of its broader push to hold accountable businesses that market technology to very young children and their parents.