The official AndroidDev Twitter account just noted today that the Android Market has passed the 100,000 app mark. Just like that, the important six-digit psychological barrier was broken. The tweet might not be the most auspicious announcement, but it is an official word on the total number of apps.
Android's app ecosystem has been growing by leaps and bounds in the last year. In November of 2009, the Motorola Droid came out, offering users their choice of 20,000 apps. Now the Market has grown by five times. That's nothing if not remarkable.
Apple is still in the lead when it comes to raw number of apps. The iOS App Store has nearly 300,000 apps within its virtual walls. It's nice to have a large number of apps, but it's which apps you need that are important. Are there apps missing from one platform that you really must have?