Starbucks app is available in the Android Market right now, and it’s free. It requires a minimum of Android 2.1 to run, and as you might have guessed, it won’t work everywhere – stores need to be able to scan the card’s bar code rather than its magnetic strip like a credit card, so without the proper technology, it’s useless. But 9,000 or 8,800 or whatever locations is quite a few, so it should make the world slightly more convenient for quite a few people. Starbucks also reports that 1 in 5 transactions at its stores take place using the app, which not only suggests that it has great coverage, but that it really is pretty convenient for most people.