It all depends on the number of users and the nature of your app. Typically 1-2%...

		_csoz on Sept 23, 2011 \| parent \| context \| favorite \| on: Ask HN: Small product, single founder success stor... It all depends on the number of users and the nature of your app. Typically 1-2% of users buy virtual goods, and eCPM from ads is pretty decent for US/Aus/EU/Ca audience. Aim for an addictive experience and the users will come.