iPhone 4 and Android

The App Store has productively complete 10 billion downloads and on this occasion Apple has published several Top Ten lists � Top Ten Free iPhone Apps, Top Ten Paid iPhone Apps, Top Ten Free iPad Apps, and Top Ten Paid iPad Apps.

comparable to a contest that was run on the occasion of nearing 10 Billion Song downloads approximately one year back, this time too Apple has run a contest featuring a $10,000 iTunes gift card to the lucky guy who gets selected in the draw.

Top Ten Free iPhone Apps Of All Time
1. Facebook
2. Pandora Radio
3. Google Mobile App
4. Shazam
5. Movies by Flixster, with Rotten Tomatoes � Free
6. The Weather Channel
7. Google Earth
8. Bump
9. Skype
10. Paper Toss

Top Ten Paid iPhone Apps Of All Time

1. Doodle Jump
2. Tap Tap Revenge 3
3. Pocket God
4. Angry Birds
5. Tap Tap Revenge 2.6
6. Bejeweled 2 + Blitz
7. Traffic Rush
8. Tap Tap Revenge Classic
9. AppBox Pro-Alarm Clock

Top 10 Android Apps

Android's been around for more than a year, and in that time developers have whipped up some great apps. Whether you're a new Android owner or a pro looking for new tools, these 10 great and free apps belong in your arsenal.
10. Layar
9. Listen
8. AnyCut
7. Secrets
6. TasKiller Free
5. SlideScreen
4. Shopper
3. PDANet
2. WaveSecure
1. ASTRO File Manager

 Nokia and Sony Ericsson  are supporting Android OS.