Not a mobile app, but I did see a team of 50 working on one project - enterprise Java in... 2002. It still wasn't all developers - between 30 and 35, then some

Not a mobile app, but I did see a team of 50 working on one project - enterprise Java in... 2002. It still wasn't all developers - between 30 and 35, then some PM, testers, etc. I can envision projects being that size, I'm not sure I can see a good justification for that state though. I can see 60 devs on a project, just not the need for them, if that makes any sense. I'm accustomed to seeing a lot of people work on stuff getting very little done, mostly talking to each other about how stuff should work, but not doing it.