The Starlight Watchmaker by Lauren James.
 
Wealthy students from across the galaxy come to learn at the prestigious academy where Hugo toils as a watchmaker. But he is one of the lucky ones. Many androids like him are jobless and homeless.

Someone like Dorian could never understand their struggle - or so Hugo thinks when the pompous duke comes banging at his door. But when Dorian's broken time-travel watch leads them to discover a sinister scheme, the pair must reconcile their differences if they are to find the culprit in time.
 
A wildly imaginative sci-fi adventure, particularly suitable for struggling, reluctant or dyslexic readers aged 13+.