Rebrain.gg
Doom learn, don't doom scroll
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Hi HN,I built https://rebrain.gg. It's a website which is intended to help you learn new things.I built it for two reasons:1. To play around with different ways of interacting with a LLM. Instead of a standard chat conversation, the LLM returns question forms the user can directly interact with (and use to continue the conversation with the LLM).2. Because I thought it would be cool to have a site dedicated to interactive educational content instead of purely consuming content (which I do too much).An example of a (useful-for-me) interactive conversation is: https://rebrain.gg/conversations/6. In it I'm learning how to use the `find` bash command. (Who ever knew to exclude a directory from a look-up you need to do `find . -path <path> -exclude -o <what you want to look for>`, where `-o` stands for "otherwise"!)Still very early on, so interested in and open to any feedback.Thanks!
HN · launched Feb 18, 2026 · 111 upvotes (top 10%) · 1 view
Niche: microlearning platforms and apps · 65 launches, 7 in the last 7 days · Explore this niche →
Category and tags
- Education
- Vertical SaaS
- B2C
- Not AI
- Commercial product
More like this: all 65 launches in microlearning platforms and apps →
Could you build this?
Yes This is an educational web application that wraps LLM structured JSON outputs into interactive quiz forms and UI cards.
Discussion
20 comments analyzed.
Competitors mentioned: ChatGPT / Claude APIs, xikipedia.org, Traditional books and documentation
Concerns raised: Accuracy/correctness of material generated, Cost of using best models not affordable, Poor UX design and color contrast, Over-reliance on multiple choice questions, High barrier to usage without pre-loaded sources
Feature requests: Settings panel for question types and ratio configuration, Chat mode for discussion instead of questions, Freeform/text entry questions beyond multiple choice, Upload documents or sources to seed learning, Move +New conversation button to upper right corner
Competitors
Other products that read as similar to this one : 167 launches clear the similarity bar, closest 8 shown.
Attention rank: #27 of 168 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 112 days after the earliest competitor.
- Doomersion - Learn Languages by Doomscrolling · yc · 2026-03-09 · 12 upvotes · similarity 0.45
- LLMnesia · hn · 2026-04-03 · 8 upvotes · similarity 0.42
- Bored People Chat · hn · 2026-06-30 · 6 upvotes · similarity 0.42
- I taught LLMs to play Magic: The Gathering against each other · hn · 2026-02-17 · 117 upvotes · similarity 0.41
- Learning Rust by writing a Markdown to HTML compiler · hn · 2026-07-29 · 25 upvotes · similarity 0.41
- I built a music theory course with games and spaced repetition · hn · 2026-04-16 · 5 upvotes · similarity 0.41
- A Daily Bible Game · hn · 2026-01-08 · 49 upvotes · similarity 0.40
- Bash4LLM+ · hn · 2026-06-28 · 60 upvotes · similarity 0.40
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