Science & space

65 projects, page 1 of 2

• Habit Toll — Guess the True Yearly Cost of Your Daily Habits

  A 10-round guessing game that forces you to commit to a number before revealing the shocking cumulative total of everyday habits. Backed by transparent USDA nutritional math.

  Games & challenges · Science & space

• Speed Sense — Calibrate Your Crash Energy Intuition in 10 Rounds

  A 10-round guessing game that trains your gut to feel how non-linearly speed translates into crash energy. See two speeds, guess the energy ratio, discover you were wrong.

  Games & challenges · Science & space

• Guess the Gig — Train Your Data Gut in 2 Minutes

  A 10-round timed guessing game. Estimate how much cellular data everyday digital activities burn. Every reveal cites real specs. Build your gut reflex.

  Games & challenges · Science & space

• Wait Rank — Test your wait-time intuition in 30 seconds

  Wait Rank is a 30-second game: rank 5 everyday services by wait time, see your score, the correct order, and your biggest blind spot, backed by official data.

  Games & challenges · Science & space

• Move Math — Break-Even Calculator for Apartment Switching

  See the exact month a cheaper apartment actually pays off. Enter your rent, deposit, and all hidden moving costs to get your break-even month.

  Calculators · Science & space

• Loss Math — How Much Gain to Recover a Loss?

  A timed 10-round solo game to train your gut instinct for the asymmetric math of investment recovery. See a loss, guess the gain needed to break even.

  Calculators · Science & space

• Prompt Guard — Strip personal data from your AI prompt in 5 seconds

  Paste your AI prompt draft. Prompt Guard instantly highlights emails, phones, financial amounts, dates, addresses, URLs, and company names. Toggle what to redact and copy clean text. 100% in-browser.

  Tools & utilities · Science & space

• Hard Message — Turn difficult conversations into ready-to-send drafts

  A simple tool for difficult messages: resignation, saying no, apology, complaint, or boundary. Pick your situation, fill a few blanks, and instantly see three professional drafts — firm, balanced, and gentle — side by side. Copy the one that fits. No AI, no storage, no prompt engineering.

  Tools & utilities · Science & space

• Overwork Math — Is Overtime Worth It Calculator

  See what overtime really costs you in money and weekends before you say yes. A transparent overtime calculator that translates extra hours into lost time.

  Calculators · Science & space

• Bet Tally — Guess Your Win Rate, Face the Real Number

  A 30-second honesty check for casual bettors. Enter your recent bets, estimate your win rate, then confront the gap between your memory and the math.

  Games & challenges · Science & space

• AI Signs — 8 Signs a Text Is AI-Generated, Ranked

  A free one-screen reference listing 8 structural signs of AI-generated text, ranked by reliability. Each sign comes with a one-sentence explanation and a before/after example so you can judge any text yourself — no detectors, no uploads, no black-box scores.

  Checkers & references · Science & space

• Watt Wise — Learn Which Appliances Drain Power Fastest

  A rapid 10-round game where you tap which of two household appliances uses more electricity. Real wattage numbers from the US DOE Energy Saver guide turn each wrong guess into a felt ratio you will remember.

  Quizzes & personality tests · Science & space

• AI Confide — Check Before You Share With an AI Chatbot

  A pre-share privacy checker for AI chatbot users. Pick a topic and instantly see a five-badge risk grid with honest yes/no answers and one concrete safer alternative.

  Checkers & references · Science & space

• My AI Risk: See which of your daily tasks AI can actually do

  Pick your O*NET occupation, customize the task list to match your real daily work, and get a per-task automation exposure profile built on published research from Frey & Osborne and McKinsey GCI.

  Quizzes & personality tests · Science & space

• Med Timeline — When Your Medication Starts Working & Side Effects Hit

  See exactly when your medication starts working — and when side effects hit — on one visual timeline. Reference data from FDA labels and clinical trials for 40 common prescriptions.

  Checkers & references · Science & space

• Task Trust — Should you delegate this task to AI?

  Task Trust is a 10-second impulse check for anyone about to delegate a task to an AI agent. Answer 5 plain yes/no questions and get a clear delegate / review-first / keep-human verdict with the single factor that drove the call.

  Checkers & references · Science & space

• Follow Damage — See What Bought Followers Do To Your Engagement Rate

  A free arithmetic tool for creators tempted by follower-buying services. Enter your current followers, average views per post, and a hypothetical bought-follower count to instantly see your post-purchase engagement rate, the step-by-step dilution math, and how many real followers you

  Generators & makers · Science & space

• Zodiac Sign Game — Sign Blind

  A 60-second matching game: assign 12 horoscope predictions to zodiac signs and discover if your sign

  Games & challenges · Science & space

• Stain Removal Reference — Stain Off

  Mobile-first reference tool that gives you the exact chemistry-based removal protocol for any stain-on-surface combination in two taps. Built for the 60 seconds after a spill, with explicit do-not warnings and a shareable link for every combo.

  Checkers & references · Science & space

• Percentage Math Game — Pump Math

  Pump Math is a daily micro-game building calibrated intuition for crypto percentage claims. Guess the value of real headlines, see the math, verify sources. 5 questions, zero fluff.

  Games & challenges · Science & space

• Vehicle Costs Calculator — Gig Math

  Transparent calculator for rideshare and delivery drivers. Enter payout, miles, and hours to instantly see your true hourly rate after vehicle costs, benchmarked against local minimum wage.

  Calculators · Science & space

• School Science Game — Fact Flip

  Fact Flip is a quick daily game where you guess whether science claims once taught in school still hold, were refined, or got overturned. Commit to your guess, see the real story with a citation, and enjoy the specific delight of being wrong. 120 curated claims, 5 per round, replay to beat your…

  Games & challenges · Science & space

• I'm Fine — See what it costs you to perform normalcy

  A self-assessment tool that measures your Performance Load — the psychological gap between what you show and what you feel. Quantifies the energy cost of performing normalcy while sensing something is wrong, projects its cumulative toll over months and years.

  Calculators · Science & space

• Debt Order — Which Debt to Pay First | Compare Avalanche, Snowball & Equal Split

  Enter your debts and available cash to instantly compare avalanche, snowball, and equal-split strategies side by side. See the exact dollar cost of each choice for your actual numbers. No signup, no data stored.

  Quizzes & personality tests · Science & space

• 🔍 AI Trust Index — Transparency scorecard for frontier models

  The AI Trust Index is a public scorecard measuring how transparent today

  Tools & utilities · Science & space

• With or Without ⚖️ | Win-Rate Significance Calculator

  Settle any star-player debate with real math. Enter with/without W/L/D records to instantly see the win-rate delta, p-value, confounder warnings, and share a verdict card.

  Games & challenges · Science & space

• Time Guess — Test Your Planning Fallacy in 60 Seconds

  Score your time-estimation accuracy against real survey data in 60 seconds. See how wrong you are and discover your bias pattern.

  Games & challenges · Science & space

• ⚡ Sync — Rhythm Timing Trainer

  Tap in perfect sync with the pulse. 30-second rounds, instant accuracy feedback, streak counter, and personal best saved on your device. No accounts, no data sent anywhere.

  Trainers & drills · Science & space

• Still Open — Guess if famous science problems are solved

  A daily 5-question game where you bet whether famous math, physics, CS, and biology problems are Solved, Still Open, or Proven Impossible.

  Games & challenges · Science & space

• Meteor Tonight — Will the Moon Ruin the Meteor Shower?

  Get a clear go/maybe/skip verdict for tonight

  Checkers & references · Science & space

• Schengen Days Calculator | Visual 90/180 Day Tracker

  See your Schengen days on a real calendar and know when you can safely re-enter the Schengen Area without doing date math by hand. Visual 90/180 day calculator.

  Calculators · Science & space

• Permission Match — What Can 3 AI Permissions Actually Do?

  A daily puzzle: see 3 permissions an AI tool requests, guess which 6 actions are possible. Each answer reveals a logical chain. Build intuition for AI permission risks in 2 minutes.

  Games & challenges · Science & space

• Hype Math — Oversubscription Calculator

  Turn "X times oversubscribed" headlines into your actual odds and expected allocation in one paste. For IPOs, housing ballots, and ticket lotteries.

  Calculators · Science & space

• Hybrid Math — When Does a Hybrid Pay for Itself?

  See the exact month a hybrid pays for itself on YOUR commute. Enter daily km, fuel price, electricity price, and hybrid premium. No "it depends".

  Tools & utilities · Science & space

• House Edge — Guess the Casino's Cut and What It Costs You

  A 10-round guessing game. Estimate the house edge on real casino bets, then see the actual edge and your dollar-per-hour loss at your own stake. Built on published gambling math.

  Calculators · Science & space

• Cost Stack — Guess What Life Really Costs

  A 60-second daily game. Rank 8 expenses for a major life event, lock in your guesses, then see real sourced data and your score. Come back tomorrow for a new scenario.

  Calculators · Science & space

• Childcare Math — Does childcare cost more than you earn?

  Enter your salary, childcare, commuting, and work costs to instantly see your net monthly gain or loss and the maximum childcare price where working still pays.

  Calculators · Science & space

• AI Pattern Lens - See and Fix AI Text Patterns

  Transparent AI pattern recognition tool. Paste your text and see highlighted patterns with plain explanations and rewrite examples.

  Tools & utilities · Science & space

• Watt Guess — Daily Energy Cost Comparison Game

  Build energy intuition in 2 minutes a day. Guess which appliance costs more, learn real wattage, annual kWh, and cost from US DOE and EIA data.

  Games & challenges · Science & space

• Screen Wise — Screening Test PPV & NPV Calculator

  See what your screening test result really means. Personalized to your age and sex with a per-1,000 person visualization based on USPSTF and Cochrane data.

  Calculators · Science & space

• Eclipse Time — Exact Solar & Lunar Eclipse Times for Your Location

  Auto-detects your location and shows the precise start, peak, and end times for the next solar or lunar eclipse at your exact coordinates, plus coverage percentage. Computed from NASA-published Besselian elements.

  Tools & utilities · Science & space

• Bad Math — Spot the Math Errors on Real Bills

  A daily 10-question game that trains your reflex to catch common math mistakes on restaurant bills, store discounts, loan quotes, and currency conversions before you pay.

  Trainers & drills · Science & space

• Watt Quiz: Memorize Appliance Wattages in 60 Seconds

  A 60-second guessing game to memorize real household appliance wattages for sizing generators, inverters, and solar setups. Sourced from US DOE Energy Star.

  Quizzes & personality tests · Science & space

• Wager Math — Neutral Bonus Calculator | Real Bonus Cost

  Wager Math is a neutral bonus calculator that shows the true expected cost of gambling deposit bonuses. Enter the bonus terms and instantly see total wagering required, expected loss, net value, and a plain-English verdict. No affiliate, no signup push — just arithmetic you can verify.

  Calculators · Science & space

• Meteor Tonight ☄️ Is It Worth Going Outside?

  Enter your city or latitude to see if tonight

  Tools & utilities · Science & space

• Strait Facts — Compare Maritime Chokepoints Side-by-Side

  Strait Facts is a reference tool for comparing maritime chokepoints side-by-side. See oil %, container %, daily vessels, detour distance, and who controls access using sourced, dated data.

  Checkers & references · Science & space

• Exit Plan — Get Your Data Out of Every Platform

  Exit Plan generates a personalized checklist with direct, verified links to download your data from every platform you use. Check your apps, get exact clicks, complete in 20 minutes.

  Checkers & references · Science & space

• How Long — Test Your Time Intuition Against Real Data

  A daily 5-question game where you guess how long everyday tasks actually take — from defrosting a chicken to charging your phone. Each answer is backed by a cited source, and your accuracy builds a personal calibration score showing whether you systematically over- or underestimate time.

  Games & challenges · Science & space

• Wallet Audit — 60-Second Hardware Wallet Security Check

  Answer 6 yes/no questions to get a prioritized fix list mapped to specific manufacturer advisories (Ledger 2024-03, Trezor 2023-11, Coldcard 2024-01) and NIST SP 800-57. Runs entirely in your browser — no wallet connection, no data leaves your device.

  Checkers & references · Science & space

• Sold As — Reverse the Frame, Prove the Cost

  Detect institutional upframing. Calculate real compounding costs. Build your personal cost ledger with verified precedent and financial math.

  Calculators · Science & space

• Sky Tonight — Moon Phase, Meteor Showers & Eclipses for Your Latitude

  Pick your latitude band and date, get one card showing moon phase, meteor shower hourly rate, approximate viewing window, and the next eclipse visible from your location. No login, no planetarium.

  Tools & utilities · Science & space

• Redact Guide — Strip Sensitive Data Before Pasting Into AI

  A searchable reference of copy-paste anonymization patterns for 7 data types. Apply in 30 seconds before pasting into ChatGPT or any AI tool. Based on GDPR, NIST, and trade secret law.

  Checkers & references · Science & space

• Real or Bot — Can you still tell AI from real?

  Spot the AI fake in 5 daily items. Prove your eye is sharp, then call out the friends who fell for it. Daily challenge. 60 seconds.

  Games & challenges · Science & space

• The Quiet Compounder — Math vindicates the boring life

  A personalized 30-year Monte Carlo simulator that compares your bold move (crypto, startup, career pivot, big city) against a steady index-fund path. Real base rates for failure, divorce, bankruptcy, and modest compounding. Built for exhausted 28-year-olds tired of SpaceX-welder and memecoin…

  Tools & utilities · Science & space

• Platform Exit Audit — Know what you'd lose if a platform disappears

  Select your messaging apps and get a personal exit audit: per-platform difficulty scores (1–5), transparent migration effort formula, prioritized checklists with official export docs, and alternative suggestions per data type. No accounts, no tracking, works offline.

  Checkers & references · Science & space

• Percent Rush — Daily Percentage Math Challenge

  60 seconds. 10 percentage questions about crypto pumps, retail markups, tips, and viral stats. Same set for everyone each day. Train your percentage brain.

  Games & challenges · Science & space

• Loss Math — Is that weight-loss claim physically possible?

  Enter claimed kg lost, timeframe, and starting weight. Get an instant math-based verdict: possible, extreme, or physically impossible. Built on caloric constants, not opinions.

  Checkers & references · Science & space

• Edge Score — See every combination that beats your score

  Configure your scoring rules and scores, instantly see every main exam + bonus combination that beats your total, ranked by minimum bonus needed at each level. Deterministic math, no simulated pools.

  Games & challenges · Science & space

• Comeback Math — Guess the Gain to Recover a Loss

  A 10-round daily game: guess the % gain needed to break even after a loss. Feel the gap between your gut and the real math.

  Games & challenges · Science & space

• Cable Choke — Simulate Submarine Cable Cuts, See Latency Physics

  Click any submarine cable to cut it — watch global traffic reroute with real latency physics. Interactive resilience scorecard for engineers and curious minds.

  Tools & utilities · Science & space