Null launcher is a launcher that does nothing. Yes really. It's useful when combined with Wave Launcher Swapps and similar.

After installing press your home button. Then depending on your Android version either check the "Use by default" box and tap Null launcher or tap Null launcher then tap "Always."

If you've accidentally switched to Null Launcher with no way to get out pinch-zoom on the wallpaper and you can change back to your old launcher.

Null Launcher is open source: get the code at .