Hemingway, 23, is looking to get his career back on track having spent last season at the now defunct Blackpool Panthers.
During his spell with the Panthers, Hemingway equalled Jim Sullivan’s goal kicking record from 1925, when he converted all of Blackpool’s 22 tries in their 132-0 thumping of Gateshead.
Rovers Head Coach Daryl Powell said: “Tom comes to us not as a result of our search for a Kyle Briggs replacement, but because we have shown that the system we have here is good at helping young players realise their potential. Other clubs were interested in Tom, but he chose us because he feels we can be good for him and consequently he can be good for us.”
Hemingway is likely to line up for Rovers in their pre-season game against Oldham on Saturday.