Interesting that most saw no change in revenue. While the article does make a point for price testing and competitive intelligence, the story I'm taking from the data is that it might be a bigger issue of marketing. What channels are driving your new user interest and sales? Pricing is so marginal - $0.99, $1.99, $2.99 - that it seems there's a relative inelasticity for app pricing. Consumers are more interested in what apps they have a perceived "need" for and thereby exposure and recommendations are a larger determiner of sales than pricing.