It's nice to see you on Reddit and see you here again.

For now, I will focus on functions as a basic SR program for the time being. So the next big updates are: The feature to manage contents through a tree structure, the feature to divide media such as images into multiple parts to make it questions, and of course mobile app.

And, actually, I have more ambitious goals than just the SR program. My goal for this is to build an integrated learning environment. In my opinion, the ability to hold personal knowledge can be small but right entry point for bigger things.

Specifically, the first is a ML-powered learning resource viewer. If you can simply view multiple formats (pdf, video, etc) in one place and make it work with LO on the spot, that would be good. But it can go further than that. Now, text readers are all bad, because I think they aren't taking full advantage of the digital interactivity. They are just putting paper books on the screen. I want to build a viewer that allows users to interact with texts using ML (like IDE for reading).

The second is a finder of learning resources. Now, the learning resources are quite scattered, and I think it would be nice to be able to manage various learning resources in one place. I think that way, I can build an app like Netflix for learning resources.

And like any other edtech software, I may be able to make it possible for users to collaborate with others in this app. But I don't have many ideas for this part yet.

Maybe the goals you've mentioned aren't about features. As for the success of the app, actually, it couldn't get popularity and is used only by very few people. Maybe I better put all of my brilliant plans behind, pay attention to marketing above all and decide the fate of this depending on the result... (it won't go away, but how much I should focus on it)