I usually solve the easier/smaller puzzles in Conceptis apps using my iPhone in public transport, and the harder/bigger ones on my iPad at home. It would be nice to be able to sync my progress on both devices. Just look for ecommerce web developers as that was what we will work on. I came to do this “manually” using the Solve button, so I know which puzzles I have already solved on another machine, but I have to wait until the puzzle is completely solved, even for medium size, which I don’t have time always.
