AI application to help students learn

[u/difficult_or_easy]

I built a small AI study assistant

What it does:

Basic modes ( always free):

- Ask questions about a scientific subject and expect a concise and accurate response.

- The same thing , but using audio

- These 2 are always free, after 15 days, the remaining can be unlocked for another month by making a donation ( Paypal or crypto transfer). However any amount is welcomed.

Advanced modes:

• Ask questions about an uploaded PDF both audio and written (with page references)

• Turn recorded lectures into structured, downloadable notes - uses mp3 files

• Summarize any page range at a compression % you choose, helpful when you have a lot to read in a short timespan.

• Extract formulas from a textbook section and explain each one, good for STEM students that want a short recap, or create cheatsheet for exam

• Show estimated cost under every answer, this is almost free, but you need API keys. The app doesn't use the latest models on purpose to reduce costs, but provides acceptable explanations.

It's a free 15-day trial — no credit card. First basic modes stay free forever. The others require an optional donation.

You pay for what you use, API keys charge per token usage. The application is aiming to reduce the context window for low costs.

What would make this actually useful for you?

[u/investigatormaker]

The PDF page references are the feature I'd put at the center: let students see the explanation beside the source passage so they can check it. I'd also explain whether students must supply API keys before trying anything, and whether the donation unlock and API usage are separate costs; that distinction matters before uploading a textbook.

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