Ninja Launcher Unlimited is an app launcher for Android phones. Once you have this as your live wallpaper, you can launch apps by just swipes. Since it doesn't change your wallpaper visually at all, your screen looks like your usual wallpaper.
Let's take a look at this official trailer. A bit hard to see as it's filmed horizontally, but you'll get how it works.
After installing the app, tap twice on your home screen and Ninja Launcher Unlimited will show up. Then, if you swipe your finger up, down, left, or right, like you're throwing some ninja star, it will launch a designated app.
Normally, you can't see the app. It only shows up when you need it just like a ninja. They have a variety of designs for its icon, such as a circle and a lovely heart shape.
Here's how to set up.
After opening the app, tap on the arrow in the upper right corner to go to the wallpaper menu, and then select NinjaLauncher Unlimited.
Now you assign an app to each direction. You can have up to three pages of app designation. Tap twice on the home screen, and you'll get the first designation. Tap three times for the second one. Tap four times, the third.
That's it. The other thing I should mention is its lock function. If you go to the menu and check the "screen lock" box, it turns on this lock mode where the screen is locked as usual but you can still launch apps with NinjaLauncher Unlimited. If you want to unlock, just swipe away the chain at the bottom of the screen.
If you have a lot of apps that you use all the time and it annoys you to have to launch them each time, the app will definitely be great help. The regular version is 100 yen, but they also have a free version with which you can assign only four apps to the launcher.
Device used: htc Desire HD (001HT)
Last Updated: 05/04/2012
Price: 100 Yen (There is a limited edition for free)
Compatibility: Android 2.2 or higher
Translation by Tsukasa Kondo