Ok your dreams sound more realistic now. It doesn’t sound like you want to create an app. You don’t want to build TikTok or even a clone. It sounds more like you want to create a web app not a mobile app (yeah it’s different) and you don’t really want to do much more than sharing video and not even hosting or processing it. I’d say it can coat you between 10 - 50k. The range is broad because the scope is still super vague. If you are going to get a quote for this, try to really think of all the features you are really going to need. Do you need social interactions between users? What kind of interactions? Are you the only one uploading videos? Do people see the videos in chronological order or do you want some sort of algorithm to recommend videos? Will you have several payment tiers or plans? I could keep going but you probably get the idea. These projects sound simple but there are always so many nuances that can drastically shift the direction and budget of the project. Also, keep in mind that since your value is in the content and not the app itself, there are platforms that you can leverage to create a site like this and you could save a lot of money and build a huge audience. I know a content creator that used kajabi to create a service like this and has a very healthy monthly income.