PoseCam

Pose Cam is a camera application designed for taking intended compositions of photos,
featuring sensors of roll, pitch and azimuth; grid lines and indication shapes; image mix for making the same composition as particular photos with 10 steps of opacity setting; Fibonacci lines for guiding beautiful compositions; and more.

Image Mix function has "Camera Front Mode", which bring camera picture to the top of mixture image, letting for example some shrunk pictures be built in 1 picture.
You can express a route to somewhere or a cooking procedure in 1 picture!

Image Mix function also has "Erase Mode", which you can erase any area of mixture image and have the camera view into the area.
For example this is for a situation like this.
You are in a furniture store and wondering whether the lamp or sofa there fit in your room.
With PoseCam, you can imagine how the lamp or sofa will look like in your room.
1: Take a picture of your room.
2: Launch "Image Mix" function in the store.
3: Erase the area of the mixture image where you are going to set the furniture.

Of course essential features are supported such as picture size, picture quality, zoom, color, flash, exposure, etc.
*Some devices may not support one or more features above.

* Sensor indicator sometimes freezes for few minutes in the first use on Nexus 7.