After a first public screening at the Telluride Film Festival, the new Steve Jobs film from Danny Boyle has had largely positive reviews – even from Apple co-founder Steve Wozniak himself.

The screenplay by Aaron Sorkin – who also tackled another of the great flawed technology pioneers with his script for the Social Network – has been praised by critics, but it’s the cast who have won the most plaudits.

The film stars Michael Fassbender as the eponymous hero, with a supporting cast including Seth Rogen as Wozniak and Kate Winslet as Joanna Hoffman, one of the original members of the Macintosh team. Reviews have so far lauded Fassbender’s portrayal of the notoriously difficult, brilliant Jobs, with some critics putting him forward as an early contender for Best Actor at next year’s Oscars.

The outspoken Wozniak – who publicly criticized 2013’s Jobs movie starring Ashton Kutcher as the Apple genius – told Deadline that he felt this new film had an impressive level of realness when it came to the characters. “I saw a rough cut and I left like I was actually watching Steve Jobs and the others, not actors playing them.” In fairness, he was a paid advisor on the film so he’s likely to speak in its favor – but the fact that he was involved in the project at all should be a sign of its authenticity.

For those of us who don’t frequent film festivals, Steve Jobs will be released to a wider audience from 9 October.