
Brain Speed Test
Test your cognitive speed across reaction, decision, focus, memory, and inhibitory control.
@MuttyRab · X
The full gallery
Tech stack
21 projects

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

Practice typing with AI feedback, real-time scores, and personalized drills.
@AmitGajbhare · X
We build - a modern typing platform that helps people improve typing speed and accuracy with AI-powered practice, real-time feedback, progress tracking

Personal intelligence tool that links your ideas across time and suggests what to do next.
@amir_mehrabi_ · X
: Personal Intelligence

Take evidence-based psychology and brain tests measuring brain age, sleep quality, and well-being online.
@LifeGraphPlus · X

Take a 3-minute quiz to assess your AI proficiency and get personalized learning recommendations.
u/ExitRowSeat_13A · Reddit
I built a 3-min test to find out how good you actually are at using AI It's very easy. 8 questions. 3 minutes. At the end you get a level from 1–5 and a roadmap showing what to learn next. I did it because I noticed that “being good at AI” is incredibly vague, and I wanted a simple way to measure it. But honestly... I built it to learn the process of buidling something like this and I had so much fun figuring things out, its addictive! :) I'd love to have you guys give i

Test your internet download and upload speeds instantly with no app required.
@checkdotfast · X

Assess your change readiness across ten dimensions with interactive practice and feedback.
@osrn2004 · X
Check out what I just built with Lovable!

Answer 12 questions to get an estimated Praxis 5001 test score and identify your weak areas.
@7Sk2n5E8hK98730 · X

AI companion for tracking ADHD and perimenopause symptoms with personalized guidance.
u/Potential_County1505 · Reddit
Looking for honest feedback Looking for honest feedback Hi everyone! I've been building NeuroLens AI, an AI companion for ADHD & perimenopause, and I'd love your honest feedback. It helps track focus, mood, sleep, stress, brain fog, and other symptoms, provides personalized AI guidance, and generates reports you can share with clinicians. It's not a diagnostic tool—it's designed to help people better understand their health patterns. Try it: https://neurolens-ai.com What would you i

Test your reaction speed and play 17 mini-games including puzzles and arcade games.
leolee829111 · V2EX
做了个反应速度测试站, 5 个工具+17 个小游戏,求各位帮忙看看 前段时间看了个小游戏站赚美元的教程,想着自己也试试手。没搞太复杂的——先做了几个认知测试工具,又嵌了些免费小游戏,搭了个站。 地址:checkreaction.com ( https://checkreaction.com/ ) 目前有这些: - 反应速度测试,5 轮取平均,带年龄基准对比 - 瞄准训练,30 个随机目标,测速度和精度 - 打字速度,30 秒 WPM - 序列记忆、数字记忆两个记忆测试 - 17 个 iframe 小游戏,纸牌、台球、消消乐、Cut The Rope 这些 技术跟 FH6Wiki 一样简陋——纯静态 HTML + 原生 JS ,扔 Cloudflare Pages 上。反应测试就一个 4.5KB 的单文件,也扔 GitHub 开源了。 为啥做这个 顺手查了下关键词难度。"reaction time game" KD 只有 4.8/100 ,排第二的是个 DR=0 、8 个月的新站,体验分只有 22 。第六名是个床垫公司。Google 甚至拿 Red

QuizPortal helps educators create secure online quizzes with automated grading, deep analytics, proctoring, and seamless student management.
@quizportalinc · X

Upload PDFs or notes to generate AI-powered quizzes, flashcards, and spaced repetition study sessions.
u/Gloomy_Silver_1700 · Reddit
Solo-built app just passed a bigger competitor on Google Play visibility score https://preview.redd.it/cmy3haru6veh1.png?width=1510&format=png&auto=webp&s=6c9f05bd5d22a012f123e4c4f6f26d1a7c85c5e3 Sharing this because it's a small win but it's mine. I'm the solo dev behind skillably, a study app where you upload your own notes or PDFs and it turns them into quizzes and flashcards, adapting based on what you actually get wrong. No team, no funding, built around a day job.