SudoCubed

Play your favorite number puzzle game in 3D! There is a single solution to each cube.
Game play is simple, but solving the cube is a challenge! Can you do it?
Rules:
Add numbers to the grid.
The numbers 1-9 must appear a single time in each row, column and 3x3 box.
There is a single solution for the entire cube!
This is a 3D puzzle.
Edge values of each cube face are shared between adjacent sides of the cube. When placing edge values, make sure to rotate the cube to check the other sides! You may find that the number you just placed should not be there!
Puzzles can be unlocked for free by watching a reward video. You also have the option of making a single in-app purchase to unlock all puzzles.
Controls:
Simply drag your finger to rotate the cube.
Tap a space to toggle the number.
Double tap the cube to auto-rotate it.
Use the pencil option to place multiple values in a square if you are unsure.
Expert mode is difficult and should be avoided unless you are truly an expert!
It may take several hours to complete an expert puzzle without any hints or error checking.
Enjoy!