
FreetCode — Free Algorithm Interview Prep
Practice algorithm interview problems with solutions and interactive visualizers.
@Galliard232634 · X
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Practice algorithm interview problems with solutions and interactive visualizers.
@Galliard232634 · X
Come study with me on

Connect with verified mentors for 1:1 guidance in coding, startups, and career development.
@wearekrishnaite · X

Personalized learning, ACT/SAT prep, essay support, and audio tutoring in 100+ languages.
@vrajshroff · X
Personalized learning for students

A coding network where learners build visible proof through courses and challenges with mentoring and company operations.
@Michaela200_5 · X

Get AI college admissions guidance for school matching, chancing, and essay coaching.
u/Known_Second_1039 · Reddit
I built an AI college essay coach that refuses to write the essay (launching 19 days before Common App opens) Hey r/SideProject - I'm a student, and this is my first real product: Admit Pilot ( https://admitpilot.org ). The problem I couldn't stop thinking about: this application season, a huge number of college essays will be quietly ghostwritten by ChatGPT. Colleges are explicit that this violates their policies, readers are getting better at spotting the AI voice, and the students wh

Re-explain any learning material in your own words with adaptive questions that reveal what you actually understand.
@indrajit_tweets · X
Most AI learning tools explain concepts for you through summaries, notes, quizzes, and flashcards. But recognising an answer is not the same as understanding it. That’s why I built ReExplain ( for the @OpenAI Build Week Hackathon. ReExplain flips the roles - the AI becomes the curious learner, and you become the teacher. You explain the material in your own words, while the AI listens, identifies gaps, and asks follow-up questions that challenge you to think deeper. Powered by GPT-5.6 Luna and built with Codex, ReExplain is now live on Product Hunt! If the idea resonates with you, I’d really appreciate your upvote and support 😄 🔗 Product Hunt Launch Link: Watch the demo, try it, and share your feedback! #ProductHunt #OpenAI #BuildWeek #AI #EdTech #Hackathon

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

Turn PDFs and lecture videos into AI-generated study guides, quizzes, and flashcards.
u/WindsOfRegret · Reddit
StudyFocus - A study tool that analyses your material and prepares tests for you! Title pretty much says it all. I build what I would consider a perfect study tool for myself, and I use it (almost) every day. It analyzes the PDF, lecture videos, etc. and creates study material, practice problems, shows step-by-step solutions to problems, creates flashcards, and creates tests. Link: studyfocus.ai submitted by /u/WindsOfRegret to r/SideProject [link]

Free AI tutor for kids aged 7-9 that personalizes lessons in coding and technology through interactive games.
u/Designer_Process_715 · Reddit
I built a free AI tutor for kids that remembers each kid and makes learning feel like a game I'm a software engineer and dad of three. My two older kids were deep in YouTube Shorts and Roblox, and I didn't mind the screen — I minded that they walked away with nothing. So over the last ~7 months I built the thing I wished existed. It's called Aivie Spark. My favorite moment testing it: my son hit a Boss Challenge on a math topic and got stuck. Instead of giving up — or getting the answer

Play MathJump, a free online math runner game. Solve arithmetic, time each jump, and practise addition, subtraction, multiplication, and division.
barantt01 · V2EX
做了一个速算的小游戏,有空可以耍一耍 网页游戏 体验地址: https://mathjump.cc 游戏界面 

Improve judgment across parenting, communication, leadership, and finance through swipe-based scenario quizzes.
@ShashankBhutiy4 · X
Duolingo for Soft Skills and career growth

Practice coding interviews and system design with an AI coach instead of a human judge.
@preproomai · X
🟢Get ready for #vibecoding and AI #codereview. It is cutting-age & you can't miss: Time to ditch old-school @LeetCode ! #SoftwareEngineering #TechInterviews #CodingSkills #TechCareers #PrepRoom #TechCareers #SystemDesign #ITJobs #CareerGrowth