@rsachdeva asked, “How do you know when someone buys the app?” Of course, he is referring to an iPhone. Here is a list of tools I use to reviewing my daily iPhone sales figures:
AppViz: AppViz is a brilliant piece of Mac software that allows iPhone developers to download and review their app sales. It also supports ranking and review downloads. AppViz sells for $29.95 (USD) and is well worth the price in my opinion.
AppDailySales: This is a python script that downloads daily sales reports. It’s open source and written by yours truly. I have the script setup to run daily on a server. This ensures I never miss a daily report even when I’m away from the computer for a few days.
AppSales Mobile: An open source iPhone application that is great for looking at daily sales when on the road.