When Amazon first announced the Kindle Fire, many people heralded it as the first tablet with a chance in the market against Apple’s iPad by virtue of the fact that it was less than half the price, and more portable, with a 7″ screen.

Those predictions were recently validated, with Amazon selling an estimated 5.5M in the first quarter of release. Not bad, but we learned today that Apple sold 15.43 Million iPads, a 111% increase over the same period last year. It is an interesting contrast, but I wondered how the Kindle Fire’s sales compared to those of the iPod Touch.

My reasoning in comparing the two is that the Kindle Fire competes more directly with the Touch than the iPad. The iPad has a 10″ screen. When the first 7″ Android tablets hit the market, Steve Jobs said that Apple had considered smaller tablets, but found that the iPad was the smallest device they could make that allowed a significantly broader range of interactions than the iPhone. You can type on an iPad, as well as create documents, spreadsheets, and presentations. The Kindle Fire, on the other hand, is a lot like a big iPod Touch. The bigger screen is better for reading and browsing the web, and perhaps a little better for viewing movies. On the other hand, the iPod Touch is significantly more portable; it fits in a pocket, the Fire, in a purse.

I wondered how Kindle Fire sales compared to iPod Touch sales. Apple reported that iPod sales were down 21% to 15.4 million, but over 10 million of those were iPod touches. With a little digging, I found that Apple sold about that many iPod Touches during the same period a year prior. So, even without an update, the iPod touch is selling about twice as well as the similarly priced Kindle fire. Of course, the Fire seems to be on an upswing, while the Touch is just holding steady.