
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

Free math curriculum featuring 20 lesson plans, printable packs, and 19 browser games for ages 7–8.
@iamjoshknox · X
This is very cool - I'm starting a math circle at my son's school this year. I vibe coded some teaching instructions for it here:

Type a math problem and get step-by-step walkthroughs with explanations.
u/peterparkermarker · Reddit
MathIQ I built mathiq.io with Claude Code because I wanted a way for students struggling with college level maths to see how the problems can be broken down and not as intimidating. Each walkthrough goes from beginning to end and each step has a "why and how?" feature. Anon users get 1 free daily walkthrough powered by Haiku 4.5. Signed in users get 3 free daily walkthroughts powered by Haiku 4.5. Plus users get 5 Opus 4.6 walkthroughs plus 20 Sonnet 4.6. Pro users get 8 Opus/30

Learn math through interactive quizzes with an AI tutor across 9 topics.
@TawiahHann7270 · X
Check out what I just built with Lovable!

Interactive lessons in math, programming, data analysis, AI, and science.
@BruceWayne95290 · X
just leaving a comment cause its 1am and im vibe coding, will come back tomorrow (on an alt account for open claw fyi) I've worked with the following brands: vytadose, bajabeachco, jaje health, eric javits, 4knines, welleco, coatdefence

Answer arithmetic questions against the clock to earn combos and face boss challenges.
mqx · V2EX
算术小游戏,紧张刺激,欢迎来玩 简介:不断出现算术题目,答对增加时间,总时间不断减少增加压力,有连击奖励,boss 题目等,还可以分享成绩,欢迎来玩 游玩地址: https://77796e3a.pinme.dev/

Free platform with 1,000 DSA problems organized by topic and difficulty, with solutions in multiple programming languages.
@Hshu_15 · X
Built something I’ve been working on 🚀 a free platform with 1000 DSA problems, organized by topic & difficulty. Built with ChatGPT + Antigravity and deployed on Vercel. 🌐 ⚡ #DSA #Coding

Discover curated music selections randomly without algorithmic recommendations.
u/replaytheNight · Reddit
I built an algorithm-free music curation site using the public YouTube API to escape biased recommendations Hey Reddit, Like many of you, I grew tired of modern music streaming algorithms feeding me the same loop of corporate hits or predictable tracks. I wanted a way to discover both timeless classics and completely hidden gems without having to create an account, log in, or bypass endless ad screens. So, I spent my free time building The Amazing Jukebox : theamazingjukebox.com Wha

Pick your math level and topic, then solve generated quizzes with instant answers.
@EsaiePelinyn · X
Check out what I just built with Lovable!

Use 100+ free online calculators for math, chemistry, physics, loans, health, and AI costs—no signup needed.
u/averageChilean · Reddit
Built a free tool site to help my brother study — now has 100+ tools, would love feedback My brother's in high school and needed something more visual to study chemistry, physics, and math, so I used Claude to build him a simple site with interactive calculators and visualizers. I'm not a programmer or from a tech background, so without AI this wouldn't have happened, at least not this fast. It ended up helping him a lot more than I expected, so I kept expanding it, added a bunch of other

Calculator to estimate crypto airdrop token values based on market cap and distribution parameters.
@baofuzailushang · X
有位大兄弟制作了一个计算variational积分价值的网站,使用起来很方便: 我以市值1.5B,总积分9.3M,空投25%来计算,每分的价值是40u,1000分就是40000u 我认为这是保守估计,如果8月份variational上线了swaps和api,数据会更好看,而且以var的格局来看,空投应该不止25%,可能30%以上!

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 