Microsoft trails behind with 120,000 apps on Windows store.
Google has confirmed that its Play store has exceeded 700,000 apps, matching Apple's iOS store in the process.
Apple announced the milestone last week when it unveiled the iPad Mini and iPad 4. The two smartphone and tablet market leaders will now battle it out to the coveted one million apps milestone.
It'll be interesting to see who does reach that milestone first, though. Apple has an approval process in place in regards to apps submissions, while Google allows any developer to submit their apps.
Either way, Apple has argued that iOS has led to more sales for developers, with the firm stressing that it has paid $6.5 billion to developers since the App Store's inception in 2008.
Apple will release the iPad Mini and iPad 4 on November 2. Google, meanwhile, recently announced an enticing lineup of forthcoming Android smartphones and tablets: the Nexus 7 will now be available as a 32GB model, accompanied by the promising Nexus 4 and 10-inch Nexus 10 tablet.
Microsoft, meanwhile, said its Windows store boasts 120,000 apps.

Probably the same number as on Android.
Curious to see how many paid vs free on Appstore and Google play.
So an App averages $20/month in profit for the developer.
Actually much less as the majority of the money goes just to the top 500 or so Apps of course.
Apple is pretty much the only one cleaning out in the Apps game. and to be fair, so are Google and M$
Maybe a lot for a high school kid, but nothing for a serious developer.
To the person taking total Apps and divided it into money paid, your calculations are pointless.
There are a huge number of free Apps where developers don't need to make money. My bank has an App for online banking. My university has an App. My hockey, football and basketball teams have Apps. Even my local butcher has an App. All free and provided as a SERVICE, not a way to make money for the developer.
These days an App is like having a web page.
Oh, and I see no mention of developers choice. iOS is still preferred by developers more than 2:1 vs Android. Developers know where the money is.
That is true. Many are free.
But than, if you bring 'earnings' into it you have to break down the numbers into free and paid Apps. Otherwise the numbers are as pointless as my simple statistics.
I could have calculated the standard deviation for you but I am not here to tick off people with college level math.
You can't compare the two that easily. Angry Birds for iOS is $0.99. Angry Birds for Android is free and Rovio makes money from inline ads. So to properly compare, you'd also have to ask every developer how much they made in ad revenue.
Also, Google Play is not the only Android market. You're free to add any market to Android if you wish - the most well-known is probably Amazon's App Store.
Judging by Apple's approval process, I'm sure iOS has more 'working' apps that aren't scams. Too many times I have android apps not doing what they advertise.
Talking cats and playing angry birds isn't exactly something to get excited about..
A lot of apps are useless, even on my tablet I prefer to use the desktop mode in the browser, I find the app versions are light diet coke and their notifications can be really annoying.
But good on Google for their progress and being competitive, a bonus for the Android users out there.
So, you just install without checking the reviews?
This is from very early in the life of Angry Birds-- but back in December 2010, they were selling the iOS version for $0.69 [after Apple's cut] and were making about the same every five months per user...
If you got an app that people will use a lot for a long time, ad supported can make you a ton more than selling it.
http://www.intomobile.com/2010/12/03/angry-birds-android-1-million-ad-revenue/
crApps