Awesome work launching the product.
You have built a very good tool as a solo dev. the slides are very text heavy. Please use a better image model to convert the text into illustration something like napkin.ai
I really like the quiz with word search generator. This could be a simple niche which other LMS's might not be targeting. Could be a good side project to a simple tool.
One more feedback as ex AI startup builder. When building the product we are in an adrenalin rush to build the coolest features hoping that customers will use it right away if it solves a problem. After launching we realise thats not the case. They only come if the pain is really bad, like there is no alternative. A easy way to workaround this is to build integrations rather than full fledged UI . If you build an integration for existing LMS, the customer will be more likely to try it than a new tool which will have to go through the ardous procurement process of school or any organisation.
Information heavy slides can have their place - distribution, and are quite often used in management consulting type sales.
Information-heavy slides have their place when you're also handing paper printouts to everyone present - otherwise knowledge transfer to any individual gets limited by both their working memory and by how sharp their vision is vs. how far are they for the screen. This is really bad in school setting in particular, as kids may not even realize they find the slides boring just because they're sitting too far back.
The information heavy slides are usually the handout.
I have also seen McKinsey style slides be information heavy, work fine on screenshares.
It's important to remember a stereotype of presentations is sparsely focused pitch decks needing to be the only format for everything. I like this format a lot, but would be missing certain opportunities where it comes up incredibly short, because people don't remember 50% twenty minutes later.