Sandwich Sudoku 4+

Bit late to this but I have only just discovered the Sandwich Sudoko variant so very happy to have found this app. Excellent puzzles however I dislike the way it automatically deletes my other “possibles” in the region/line etc when I place a definite number. It very often impacts on other decisions so prefer to review and erase myself, as with pencil and paper. Is there a way to turn this feature off? Also what do the random numbers in circles under the puzzle number on the menu page mean? Can’t find any explanation anywhere. Other than that I am really enjoying the puzzles and format.

Just finished all the puzzles. It is a lovely relaxing, and challenging, activity to pick one of the puzzles and work on it in the evening. I found a few quite tough - and had to laboriously try multiple paths, eliminating them one by one. So it was rewarding and good value for money to get a few weeks of challenging entertainment. The same clean interface as the rest of their apps. The tips, if you want to use them, are a bit difficult to understand - maybe they could be highlighted on the screen. Overall: very good and quite enjoyable.

The games are really good and get progressively harder. Portrait mode on iPad is cumbersome, please allow landscape. (If coded in Swift, fairly easy to do).
Disappointed that iPad and iPhone are not kept in synch. I got through several games on iPad then went to iPhone and had to start from level 1 again. While we’re waiting for synch, please remove the lock so that I can at least choose which game I want to play on either device without having to work through them all again. Locking levels is no benefit.
Also, 5 in corner pencil looks the same as 5 in the other pencil mode so please apply different styling eg colour or font style.