Sony is hoping to boost digital record sales with a new iPhone app that offers a discounted album every 24 hours. Prices are slashed by as much as 70 percent in the Album of the Day app, and all purchases are made through iTunes. “Every 24 hours, Album of the Day offers you one album from the artists you know and love at a special limited time only promotional price,” Sony says. Each deal comes with track previews and a comprehensive description of the album on offer.