Circuit Board - Go with the flow!

Circuit Board - Go with the flow! comes from von Lunagames Fun & Games.

It's exactly what you'd expect: circuit boards.

The last image says Tons of Puzzles, but I saw only 48 and solved them very quickly.  The last 10 were challenging. The whole game took about an hour. It's free!
https://itunes.apple.com/de/app/circuit-board-go-flow%21/id784503931?mt=8