@bastien.fournerono3q - did you mention above that there was a log-in screen in your app? If that were the case then a web app would be a strong option.
We’ve posted about them in more detail here: 🎉 New Thunkable ✕ PRO Feature: Publish your Project as a Web App 2020-03-11
Here’s a simple example of a web app that I’ve published:
And here’s how to add any web app to your home screen, so it “feels” like a native app:
https://intercom.help/thunkable/en/articles/3828958-add-to-home-screen