I bought a DGT Pegasus e-board, a chessboard to play online chess. According to the information in the product description of the DGT Pegasus for the connection between this electronic chessboard and Chess.com a free 'DGT Chess App' (Android and iOS) would be made available. Recently DGT announced via the FAQ that the connection between the e-board and Chess.com will not be possible via the DGT Chess App, but that Chess.com itself will make this possible via its own apps.
Now it appears that the connection via iOS, on the iPhone or iPad, is not yet possible. DGT refers to Chess.com, I quote: "Chess.com has it's own app which is compatible with DGT Pegasus. Please make sure you have the latest version of the chess.com app. At this moment connection is only possible with an Android device." So, according to DGT, Chess.com would have to make an update to the iOS app to enable the connection to the DGT Pegasus e-board.
I hope the information from DGT is correct — i.e. soon there will be an update of the Chess.com iOS app ready for download in the Apple App Store, allowing the connection to the DGT Pegasus e-board.