Apple’s continued Chinese expansion saw App Store revenue in China increase by 70% last quarter. That’s according to figures from a new Q1 2014 report from app analytics firm App Annie. Key to this increase is the China Mobile deal which was announced at the end of last year, opening up Apple’s potential customer base to the 763 million users currently on the country’s biggest mobile network. However while the figures certainly sound all well and good, currently Chinese customers spend less money on iOS apps than Japan.