I know this forum is mainly for developers. But just curious anyone does not only wanna do coding work, but also has some interests of designing a mobile game together?
My idea is to design a small but creative strategy game. It's gonna release in AppStore. The story of the game is that the player drives a spacecraft to explore the unknown universe and look for a planet that fits for human being to live. The story is inspired by the movie - Interstellar. I like it so so much. The game strategy is mainly about designing a most effective way of upgrading your spacecraft so that you could travel farther. I personally like hard sci-fic so I want the game to be visually hard sci-fic. In my current design, I'm looking at a 1 man/month coding work size of project so I'm looking for just one experienced developer to work with. If anyone happened to be a hard sci-fic fan or just be interested in making such a game, please let me know. We could talk more. I'm pretty confident that the gameplay is very attractive. And I have some creative design for in-game-purchase so we are not doing charity. But the very first thing is I need a trustworthy partner. Are you the one?
By the way, I don't think we have to sit together to work on the game. So, where you and I live is not a question. We can work out some doable procedure to make sure it's a healthy remote working relationship.
You haven't mentioned anything about what the app is supposed to do, your skill set, what tools you intend to develop the app with etc.
At the very least do some initial research, see how far you get, and then (and only then) post a specific question when you need some help.
"There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult." - C.A.R. Hoare
There is no single unified IDE for both mobile platforms unless you are considering cross platform development. In which case I would highly recommend Xamarin. A good introductory article (written by me) can be found here Introduction to Xamarin.Android[^]