Iris

Iris is an extremely useful tool for your everyday life. It makes it possible to use your Android as you walk down the street without worrying about running into anything or anyone. It's very simple to use, since once you open it, you don't have to touch anything – just let it run in the background.

This app makes your screen transparent, making it much easier to walk down the street without risking running into something you wouldn't see otherwise. This way even while you're texting you can watch out for something in front of you, or know which way you need to turn without even looking up from your device.

To make using it simpler, Iris lets you adjust the level of transparency so you can see where you're walking better, or see more of the screen that you need to see. This feature is useful on days when the sun makes it hard to see your screen, letting you adjust the level exactly to how you need it. You have a pull-out menu to easily adjust it whenever you need to.

Iris has the advantage over other similar apps that when you set the transparency level, it won't move unless you change it manually. No matter what app you're using, it stays at the same level in all circumstances and conditions.