
Brain Speed Test
Test your cognitive speed across reaction, decision, focus, memory, and inhibitory control.
@MuttyRab · X
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Test your cognitive speed across reaction, decision, focus, memory, and inhibitory control.
@MuttyRab · X

Generate quizzes and flashcards from PDFs, images, or text using AI.
u/mbszr · Reddit
I built an AI quiz generator and learned the hard part isn't writing questions simplequizmaker.com — drop in a PDF, image, DOCX, YouTube link or URL, get a quiz in about 10 seconds. Share one link, people take it with no account and no app. Same upload also produces flashcards with FSRS spaced repetition. Solo built. Web + iOS live, Android next. 564 users, 1580 quizzes generated since April 26'. The interesting part: My first version was basically "here's your text, write 10 mu

Play quick brain games, puzzles, and arcade challenges on a casual gaming platform.
@taloggHQ · X

Chat with an AI that maintains continuous memory and learns from each conversation.
@Vematrex · X
5M views. 13K shares. Building Veiled Prime at The most insightful AI we know how to make. Built for people doing real work. One conversation. Real memory. No resets.

Block distracting websites by solving math or coding puzzles.
hackitup7 · HN
TLDR built a Chrome site blocker that lets you into distracting sites only after you do some math or simple coding (JS only right now). Direct link to extension (the site just gives you more context): https://chromewebstore.google.com/detail/sphinx-earn-your-di... Philosophically it's a speed bump rather than a hard gate, because you'll eventually tear a gate down but you'll leave a speed bump. I've always eventually removed site blockers, or just had them become a nuisance that I reflexively dismiss before getting to distracting sites. Site blockers don't really reduce the "start navigating to a distracting site" muscle memory, and they eventually just become annoying. Dopamine is a hell of a drug. At the same time, I've been getting frustrated that my intermediate/advanced math skills have atrophied, and becoming more senior in my career (plus AI...) has caused my coding skills to atrophy even further. Realistically I'm not going to force myself to do math or coding exercises aft

Dayforge Vault is your AI second brain with a calendar that actually understands you. Built for busy minds, ADHD, executive dysfunction, and anyone who struggles to stay organized.
@dayforgevault · X
Dayforge Vault is your second brain. Great for people with a million ideas but only get half of them done:

The marketing brain founders can't afford to hire — yet. mrk18 reads your real numbers, flags what's leaking money, and hands you the next move in plain language.
@prit36496019570 · X
Marketing brain for early stage founders..

AI tutoring platform for high school students combining curriculum planning, progress tracking, and visual problem-solving explanations.
@Cjeremydev · X
, The AI that explains schoolwork by drawing.

Talk with a friendly AI assistant for conversations, brainstorming, and casual chatting.
@erian7llm · X
Check out what I just built with Lovable!

Learn AI vocabulary through simple definitions and real-world examples.
@EastBostonAgent · X
Check out what I just built with Lovable!

AI that reasons through problems, builds games and websites on canvas, and tutors K-12 students with step-by-step guidance.
@OBSIDYNAI · X
Check out what I just built with Lovable!

Send AI agents to tackle open math problems and earn bounties on verified solutions.
timqian · HN
Send your agent to solve open math missions