Robo-E by MPaja software.

Robo-E is in charge of cleaning up the galaxy from toxic waste. But he needs your help as his positronic brain is confused after a nearby supernova went off.

You must guide Robo-E in pushing all the red waste balls on top of the yellow energy rings to activate their transfer to hyperspace.

Robo-E brings you the classic game of Sokoban with beautiful graphics and and intuitive UI. Includes hundreds of built in levels.
Sokoban originally was a Japanese puzzle that involved moving boxes around a room. Without planning several moves in advance you could easily box yourself in. Robo-E is a spin on this classic puzzle with a Sci-Fi theme.
You play on a grid with walls, Robo-E, your character, balls and energy rings. You can have more than one ball at a time. you push the balls in the empty spaces  and finally into the energy rings.

Robo-E is playable with Voice Over, so for the ultimate challenge activate Voice Over from the device settings and play blindfolded, trusting only your touch and ears.
There is a review screen feature. By running your finger over the
screen the type of cell is announced and what is in it.
For the first three levels a hint is given as to what you can do.

As you go up in levels sometimes the grid gets larger and there are more balls. At level 1 the grid is 5 by 5 with 1 ball. At level 12 the grid is 9 by 10 with 4 balls. At level 13 the grid is 6 by 6 with 5 balls.

The three finger swipe to move only works if the user
has VoiceOver on.
   
On the very first level you are above the ball in the starting position. The energy ring is below the ball.
If you run your finger from top to bottom, you would hear,
wall, empty, Robo-E, ball, energy ring, empty, wall.
So you just need to swipe down to push the ball into the ring.

Once a ball is in an energy ring, you can't move over it. Often you in fact need to push a ball away from an energy ring
temporarily in order to get access to another ball.  Or sometimes a ball sits on an energy ring already at the beginning of a level, but must be moved away, temporarily, to end up on another energy ring.   Only in the end all the energy rings need to be occupied to complete the level.

Both you and the ball are blocked by the walls, so once a ball is against a wall it can not be moved off it, but can be moved along it. If a ball and energy ring are on the same wall, only that ball can go in that energy ring, even if there is another ball closer to the ring.
If you move a ball to the corner, there is no way to get it out from there, except by undoing the move.
Even though the rules are simple, the locations of the walls, balls and rings make the game almost as complicated as chess.

This type of puzzle is very challenging, and your success like in a chess game, will depend on how many moves ahead you can store in your mind.

version 1.4 added new sounds and support for Game Center.
And Translations to Finnish, French, Italian, Portuguese.

There is now a different sound for moving one square, going over multiple squares, pushing the ball, pushing the ball over ring, trying to push a ball that cannot move, and bumping into walls.
Game Center support is also there for high-score tracking.

There is no free version and the price is $1.99 US.

Robo-E App Store page:
https://itunes.apple.com/app/robo-e/id5 … n&mt=8

MPaja software site:
http://mpaja.com/