Nicholas Lovell of GAMESBrief.com splits paying users into three categories: minnows, dolphins, and whales: Real whales can spend an enormous amount of money. Social Gold reckons the highest group of spenders has a lifetime value of over $1,000, with some spending over $20,000 on a single game.[116] Flurry, meanwhile, says that on iOS and Android in the US, the average transaction value for an in-app purchase is $14, and 51% of revenue is generated from in-app purchase transactions of over $20.[117]