File managers and strategy games are best-selling Android apps

A look at the top paid applications in the Android Market as recorded on April 4.

1. PowerAMP Full Version Unlocker
PowerAMP Full Version Unlocker is a "license key" that converts the free, 15-day PowerAMP Music player app trial into a fully functioning music app. Users say the unlocked version of PowerAMP turns their device into a better version of Apple's iPod. The app plays MP3, MP4, m4a, ogg, wma, flac, wav, ape, wv, and tta files and comes with a 10-band graphical equalizer.
Price: $4.99
Installs: 100,000 - 500,000
https://market.android.com/details?id=com.maxmpz.audioplayer.unlock

2. Robo Defense
Robo Defense is an addictive strategy game. Players keep the enemy from taking control of their tower by purchasing tanks and artillery and strategically positioning them around their territory.
Price: $2.99
Installs: 500,000 - 1,000,000
https://market.android.com/details?id=com.magicwach.rdefense

3. Titanium Backup PRO Key ★ root
Titanium Backup PRO Key is a paid app that unlocks features found within the free Titanium Backup ★ root app. Downloading the Titanium Backup PRO Key lets you manage your apps, create and save multiple application backups, freeze your apps, and kill bloatware.
Price: CHF5.45 ($5.80)
Installs: 50,000 - 100,000
https://market.android.com/details?id=com.keramidas.TitaniumBackupPro&feature=top-paid

4. ROM Manager (Premium)
ROM Manager (Premium) is an app that presents users that have rooted their Android device with a user-friendly user interface to manage their Read-only memory (ROM), make backups, restore their device, and install ROMs from an SD card or over the air in the event that their phone crashes or is "bricked." It can also be used to make automatic backups.
Price: $4.99
Installs: 100,000 - 500,000
https://market.android.com/details?id=com.koushikdutta.rommanager.license&feature=top-paid

5. Root Explorer (File Manager)
Root Explorer is a file manager for advanced users that want to gain access to the entire filing system and the elusive data folder on their Android device. The app features a text editor, multi-select, search, bookmarks, permissions, image thumbnails, a SQLite database viewer and APK binary XML viewer plus the ability to create and extract zip files, send files and execute scripts.
Price: £2.50 ($4.00)
Installs: 100,000 - 500,000
https://market.android.com/details?id=com.speedsoftware.rootexplorer

6. Fruit Ninja
Fruit Ninja is an action game where players swipe their fingers across the screen to slash, squish, splat and splatter fruit. Points are awarded for "tasty destruction" and fruit-slashing combinations. There are multiple game modes including Classic, Zen and Arcade plus unlockable blades, backgrounds and achievements.
Price: AU$1.19 ($1.25)
Installs: 100,000 - 500,000
https://market.android.com/details?id=com.halfbrick.fruitninja

According to Android application tracking company AndroLib there are currently around 310,000 applications in the Google Android Market. The estimated number of applications downloaded in the Android Market is more than 3,923,000,000.
http://www.androlib.com/appstats.aspx