Idea:
to add a sense of progression, maybe have the Ingame app version of Tightly be developing the app during a players playthrough of the game, with the player doing modifications to reach different branches, like a tech tree (without grinding, players just need to get a modification to level 3 or 5 once to unlock the next part of the branches on that part of the tech tree, without needing to redo modifications they've already done).