They have an iPhone version of the app that sells well. And they also have a Windows 7 version. Despite the huge difference in number of available devices, Partovi says he’s surprised that the app only sells 1/10th the number of installs on that platform compared to iOS. Toddler Flashcards is currently ranked #709 for all WP7 apps, and #21 in the paid entertainment category. Despite that they have only sold an average of 7.5 copies a day over a previous week. They sold 71.5 per day on iOS during the same period, about 10x more.
Why do we care? Data like this hints at the total run rate for Win7 phones. Put enough of these data points together and you can start to get a picture of how well the device is selling.
Now please excuse me while I go play startup entrepreneur flashcards. Gotta keep fresh!


Authors: Michael Arrington