Apple passed 1 million apps in the App Store in October 2013. Android passed 1 million apps in Google Play in July 2013.
Adam Rifkin stashed this in Business Facts
Above: the Verge article announcing AppStore hitting a million apps.
Here's the article where Android hit 1 million apps in Google Play:
I found that on this Android statistics page:
AndroidRank says at least 180,000 apps have achieved 10,000 installs:
There are over fifty Android apps with more than 100 million installs:
"As of September 2013, Google Android OS have been installed on 80% of the world smartphones according to industry analysis, and there have been more than 1 billion Android mobile activations."