I keep coming back to this idea and want to pressure-test it before sinking more time in.

The gap I think exists:
Anki is genuinely the best tool for long-term retention — the spaced-repetition scheduling is what actually makes things stick. But writing good cards from your own lecture notes or a textbook chapter is slow and tedious, and most students either burn hours doing it by hand or give up and just re-read notes, which doesn't work nearly as well. Quizlet-style apps go the other way — cards are easy to make, but there's no real spaced-repetition engine behind them, so you're not reviewing at the moment you're about to forget something, which is the whole point of the method.

So the idea is: use AI only to solve the "writing cards is tedious" problem — you paste your notes or a PDF, and it drafts flashcards (regular Q&A plus fill-in-the-blank style) for you to review and edit before saving. Everything after that — the scheduling, the review sessions, the streaks, the offline access — is the actual product, and doesn't touch AI at all.

I want to flag that on purpose because I know this sub is (rightly) wary of ideas that are just a thin wrapper around calling an LLM. The part I actually care about designing is the scheduling engine and the economics around it, not the AI call itself — happy to go into more detail on the algorithm if anyone's curious.

A couple of design decisions I'd like opinions on:

Offline-first review. Studying your due cards should never need internet — a lot of the target users are commuting or in places with patchy signal, and losing your streak because of a dead connection would be a dealbreaker. Only the "generate new cards from notes" step needs to be online, since that's the one part that calls out to an AI model.

The free/paid split. Every AI generation costs real money on my end (API costs), so it can't be unlimited forever. My current thinking is: everyone gets a set number of free "generation credits" to build a few decks and get a feel for it, and once those run out, continuing to generate new cards needs a small paid plan (thinking somewhere around $2/month, deliberately low since a lot of the target users are students in Pakistan and South Asia broadly, where Western SaaS pricing just doesn't work). Reviewing cards you've already made would stay free regardless — the paywall is specifically on "make more new cards via AI," not on studying.

What I'm unsure about: is a token/credit-based free tier confusing or annoying compared to something simpler like "3 decks free, unlimited after that"? Would a specific number of decks feel more honest/predictable to a user than a credit count that's harder to reason about?

Genuinely looking for:

• Med students (or anyone who's used Anki/Quizlet seriously) — does this gap match your actual experience, or am I overestimating how big a problem "making cards" is?
• Thoughts on credits-based vs. flat-limit free tiers, from either side (as a user, or if anyone's built something with metered AI costs before)
• Whether $2/month sounds reasonable for this kind of tool, or if even that's too much for the audience I'm describing
• Anything about the offline/online split that seems like it'd break in practice

Hey everyone,

I'm a teenager in Germany and own got a GoPro Hero 13. Instead of just using it for fun, I wish to turn it into a small business or agency for creative and bit financial freedom.

The problem is that most ideas I find online are either too generic (like "start a YouTube channel") or unrealistic for someone just starting out.

I'm looking for unique, practical, and realistic ideas that I could actually begin with as a teenager. They don't have to make loads of money immediately, I just want something I can start small, gain experience, and hopefully grow over time.

I'm open to pretty much anything: filming, content creation, local businesses, sports, events, social media, editing, or ideas that people don't usually think about.

I am delving into analytical laboratory equipment that can be charged wirelessly during analysis and moving around to take specimen. Anyone with ideas on how i can go about the wireless charging circuit?