1. Key task: We give access to different pages with different passwords. One user can have several passwords with access to all pages or only one. We need one password to work ONLY ONCE (so that another user cannot use someone else's password) and after that, the access for the customer is saved forever. If you know in advance that this method is not possible, we are ready to make a new path for the user, for example, through unique access to the app and then opening access to specific pages
2. We have an audio player with various tracks in the database. We need:
a. After the finish of one track, the next one is started. Ideally, the ability to enable and disable such a function by the user
b. The listened audio in the general list was somehow marked (highlighted/ ticked/ etc.)
c. The ability to download audio in the app to listen to it without an Internet connection
d. Adding a track to the favorites section
3. We also have short audio tracks for a few seconds and images. We want audio to be played when clicking on an image.