Speller Chess is an app designed for people who have fine motor difficulties. It features a large board for two players, so two people can play at the same time on one device. It is also designed to have as few distractions as possible, so that players can focus on the game.
To move pieces, click on the piece you want to move, then click on the square you want to move that piece to. To unselect a piece, simply click it again.
As of now, there is no check or checkmate added, so click the "reset game" button when one player wins.