
Ultimath — stop hallucinating numbers | math API + MCP
Verify mathematical expressions reliably using multiple numeric engines via API.
@UtevR57878 · X
Not vibe-coded, rather AI assisted dev:
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Verify mathematical expressions reliably using multiple numeric engines via API.
@UtevR57878 · X
Not vibe-coded, rather AI assisted dev:


睡眠岛是一款声音驱动的睡眠 App:自然音景、耳鸣缓解、入睡自动停止、鼾声与睡眠记录反馈。
@hanzg4 · X

Free private finance tools: stress-test your portfolio against Fed rate hikes, project retirement savings with compound growth, and calculate your FIRE number. 100% browser-based —
@Big_Fin_Art · X

Calculator for Obsessed Trace game data and calculations
Obsessed Trace Calculator — Stream 游戏 Obsessed Trace 工具网站

Play 7 Takes, a card game of nerve and memory, against an AI dealer.
u/termicrafter16 · Reddit
A friend taught me a Slovenian card game two days ago. GPT-5.6 Sol helped me turn our argument into an AI opponent. Two days ago, a friend taught me Sedmice, a traditional card game we play in Slovenia. The rules are simple, but we quickly got into an argument about the best moves. Naturally, I decided the reasonable way to settle it was to build an AI opponent. I wrote out the rules, project specification, architecture, and implementation details, then handed the logic to GPT-5.6 Sol. Ab

Get personalized tarot readings, astrology charts, and numerology guidance with AI.
yoann_debidev · Product Hunt
Laminor Personalized tarot, astrology and numerology with AI

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

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

Free online calculators and converters for finance, health, and education without signup.
@Toolvica · X

Cast I Ching hexagrams and view your Zi Wei Dou Shu natal chart for spiritual guidance.
u/muyenlee · Reddit
I built iYarrow — I Ching casting + Zi Wei Dou Shu natal charts, on an open-source divination engine Two divination tools in one app: I Ching — cast a hexagram for the actual decision in front of you. Free, no account needed. Zi Wei Dou Shu (紫微斗數) — a natal chart that gives the longer-range picture your hexagram sits inside. Free full chart, all 12 palaces computed instantly, tap any palace to read it. One $5.99 unlock covers an in-depth reading + the annual (流年) report. Stack: Next.js

A daily puzzle game where you spot AI-generated errors to sharpen critical thinking.
u/CogniKing · Reddit
Play Parry — a 2-minute daily puzzle about catching AI's mistakes: spot the planted flaw, catch the answer that's lying to you I have been recently fascinated with puzzles as a way to help improve my BS-radar when using AI. I designed Parry to help with this - One puzzle a day - find the one flaw hidden in a confident paragraph, pick which of two AI answers actually helps you (one is subtly useless), call a claim true/false. Free, no account, nothing you input leaves your devi