I would like to ask you a question about playing a text game on iOS :D

What's the question? Is it related to Quest or just Interaction Fiction in general or MUDs (Multi-User Dungeons) as you said "text games"? If the former someone else more knowledgeable will have to help. If it is the other two I may be of some assistance.

Yes, this question is not related to this topic.

The user didn't specifiy whether they were tslking about Quest or any other programs, so this IS the right topic!

You can already play games on your phone online. Some people have made their text games as apps as well, but I don't know how they did it.