No, it's not exactly like Akira, but I thought it shared many similarities, and is most likely a better movie than what would come about if someone actually did make a live action Akira.
Haven't seen The Signal. I'll have to check it out.
I remember someone saying a while back how The Signal looked like it would be a live-action Akira. Maybe that's why I was a little disappointed. There was a lot of "artsy" style in the filming of this movie. Anyone going into it expecting action will be pretty disappointed. It's a prett ystrange flick... a lot of mysteriousness and "WTF" moments that I'm not sure were fully explained, but it wasn't horrible.
It's definitely another case of "people making movie trailers should make movies" because they almost give you an entirely different idea of what to expect.
I'm figuring Lucy will be another case of that. It looks like it borrows A LOT from The Matrix. I'm guessing all those cool scenes aren't the sum of the whole movie though. Looking forward to seeing it regardless.