

So I realize the following does not directly apply in this specific case, since we are talking about a full android app. But in general, there are strictly technical limitations which absolutely requires you to use https. This for example applies to PWA’s, and it also applies to apps which are WebView-based.
Basically the w3c is disagreeing with you; there are several important javascript features which are forcefully disabled if you are not connecting over https. This is a decision made by the webbrowser itself, and not something you or the dev can disable or otherwise avoid.
For example, it is impossible to use the browser’s built-in api for getting the sha512 hash of a file, which is why i had to go through great pains to do that in other suboptimal ways in one selfhosted service i made. Most devs rightfully wouldn’t bother, since those restrictions are arbitrary and effectively pointless, as there are (usually painful) workarounds.
List of features which require https: https://developer.mozilla.org/en-US/docs/Web/Security/Secure_Contexts/features_restricted_to_secure_contexts
if this is something you’d fancy then copyparty might be worth a look – it lets uploaders undo their own uploads within a configurable timeframe, even in folders where they only have write-only access (the ability to upload files without seeing existing files).
disclaimer: I’m the author – and also thrilled to see someone else suggesting it in the thread!