Checkers & references — page 4

275 projects, page 4 of 5

• Tech Fossil ID: Identify Old Media Formats in 30 Seconds

  A visual tool to identify obsolete media formats. Filter by shape and connector to find your format and get a verdict on whether to recycle, digitize, sell, or keep.

  Checkers & references · News & media

• Supplement Clash — Check Supplement–Drug Interactions in One Search

  See every known interaction between the 60 most-used supplements and common prescription medications. Type one name, get a severity-tagged, source-cited answer on a single screen.

  Checkers & references · Words & language

• Old Enough — Is your child ready? Check tonight.

  A reference tool for parents deciding if their child is ready for a new activity — e-scooters, smartphones, walking to school, staying home alone. Pick the activity and your child

  Checkers & references · Everyday life

• Trip Card — Printable Trip Plan & Overdue Response Instructions

  Generate a printable trip card with your route, group, vehicle, and check-in times on top, and step-by-step

  Checkers & references · Travel & transport

• Shop Scan — Check any online listing for scam red flags in 30 seconds

  Free decision-tree tool. Answer 6 quick yes/no questions about the online shop you are considering. Get a clear risk verdict with each matched red flag explained in plain language.

  Checkers & references · Safety & emergencies

• Offer Check — Verify Overseas Job Offers by Sector

  Free reference tool to verify overseas job offers. Get a printable 12-point checklist with sources for teaching, tech, factory, cruise, or domestic work.

  Checkers & references · Work & productivity

• What They Get — Instant Data Risk Check

  Check what they are asking for. Instantly see what each data point unlocks, whether it is reversible, and its risk level. Sourced and itemized.

  Checkers & references · Safety & emergencies

• Teen Signal — Honest Teen Behavior Check for Parents

  An interactive checklist that lets parents check observed behaviors against official warning signs from child-safety organizations, with each sign contextualized against adolescent developmental baselines.

  Checkers & references · Safety & emergencies

• Ferment Safe — Know if your ferment is safe in 5 seconds

  One-screen safety reference for home fermenters. Pick your ferment type and instantly see safe temperature zones, ready-to-eat windows, minimum safe pH, and contamination warning signs — each cited from FDA, USDA, or peer-reviewed food microbiology literature.

  Checkers & references · Safety & emergencies

• Food Fraud Field Guide — Spot Fake Food in 15 Seconds

  A pocket reference for the 30+ foods most vulnerable to fraud. Search any item to see its most common adulteration type, shelf-ready red flags, and an honest verdict on whether any home test works.

  Checkers & references · Food & drink

• Shelf Life — Is Your Canned Food Still Safe to Eat?

  Get a clear safe or toss verdict for your old canned food based on FDA/USDA rules. Check if the date is

  Checkers & references · Food & drink

• ✈️ Flight Rights — See Your Exact Compensation in 10 Seconds

  A clean no-ads reference for stranded passengers. Pick your jurisdiction and cancellation reason to see your refund right, compensation amount, claim deadline, and a copyable script to read to the agent.

  Checkers & references · Travel & transport

• Dual Rules 🛂 Will you lose your citizenship? Compare dual citizenship rules side-by-side

  Dual Rules is a reference tool for expats, migrants, and global planners. Pick your current citizenship and a target country to instantly see a side-by-side breakdown of naturalization requirements, restrictions, and whether you will lose your original passport.

  Checkers & references · Travel & transport

• 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

• Lightning Rule: Is It Safe? Instant Thunderstorm Verdict

  Instant lightning safety verdict for your exact activity. No reading required. Tap your activity (pool, golf, car, tent, shower) and get a one-screen SAFE/UNSAFE/GET INSIDE NOW verdict with NWS-cited actions.

  Checkers & references · Safety & emergencies

• Fridge Safe — Know What to Eat First During a Power Outage

  Enter when your power went out and check off what is in your fridge and freezer. Get an item-by-item safety countdown and eat-first plan, sourced from FDA and USDA guidelines.

  Checkers & references · Safety & emergencies

• Leak Check — See What Personal Info Your Message Leaks

  Paste a message before you post it in a group chat. Instantly see phone numbers, emails, cards, IPs, crypto wallets, and more highlighted with plain-language risk notes. 100% local, zero network requests.

  Checkers & references · Safety & emergencies

• Underfoot — Structural Integrity Audit

  Underfoot maps your situation to a specific historical collapse archetype, then generates the three exact stress tests you need to run before the floor gives way.

  Checkers & references · Health & body

• Warehouse Concentration Check — Instant Inventory Risk Score

  Calculate your multi-warehouse inventory concentration risk using the Herfindahl index. Get risk score, max single-site loss, and rebalance targets in 10 seconds. No signup, all local.

  Checkers & references · Safety & emergencies

• Severance Check — Legal Minimum vs Market Reality in 30 Seconds

  Severance Check instantly shows what the law guarantees versus what packages typically include for your role, tenure, and jurisdiction. Enter four numbers, get a dual-view result with clickable statute links across 8 jurisdictions. No signup, no gatekeeping, no lawyer upsell.

  Checkers & references · Law, rights & politics

• 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

• Messenger Security Matrix — Compare Recovery, 2FA & Backup

  Compare WhatsApp, Telegram, Signal, Viber, and Threema recovery methods, 2FA types, and backup options side-by-side with dated official sources. Select your messengers, tick personal enablement checkboxes, and share a configured URL.

  Checkers & references · Everyday life

• 🥡 Keep or Toss — Is Your Leftover Still Safe to Eat?

  Get a clear Safe / Use Today / Toss verdict for your exact leftovers. Select food type, storage method, and days since cooking or purchase — powered by USDA FoodKeeper guidelines.

  Checkers & references · Food & drink

• Your Real Rate — Prove your inflation is real

  Enter what you actually spend, compare it against official CPI live, and seal a timestamped record of the gap that nobody can edit or delete.

  Checkers & references · Money & crypto

• Yes Filter — Decide whether to say yes in 30 seconds

  Yes Filter is the in-the-moment decision tool for people who default to yes. Type the request you just received, slide three honest numbers, and get a transparent verdict plus a paste-ready reply.

  Checkers & references · Everyday life

• World Body — What can international bodies actually enforce?

  A plain-language reference that translates the enforcement powers of the ICC, UN, UNESCO, WTO and other treaty-based bodies into a structured can / cannot / exit grid with one real precedent per organization.

  Checkers & references · Words & language

• Window Rule — Know if opening windows cools your home

  Window Rule tells you exactly when to open or close windows during heat waves. Enter your indoor and outdoor temperature and humidity — get an instant OPEN/CLOSE verdict backed by dew-point physics. No guesswork, no AC needed.

  Checkers & references · Weather & climate

• 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

• 🧗 Unclipped — Verify every rope you're counting on

  Unclipped is the verification tool that reveals which of your safety nets — insurance, emergency contacts, wills, backups — are actually attached versus merely assumed.

  Checkers & references · Safety & emergencies

• Trip Hazard — Know what to ask before you book

  Safety checklists for adventure excursions. Pick an activity, get a risk profile, and print an Operator Interview Card with 5–7 verifiable questions and good-answer benchmarks.

  Checkers & references · Safety & emergencies

• Travel Prep Card — Sourced Travel Checklist for Any Country

  Get a screenshotable travel prep card with emergency numbers, visa links, vaccines, customs limits, and advisories — all sourced from official databases.

  Checkers & references · Travel & transport

• Tone Check — Is My Email Too Aggressive? Free Instant Tone Checker

  Free instant tool that color-codes aggressive, passive-aggressive, anxious, and condescending phrases in your messages before you send them. No account, no cost.

  Checkers & references · Work & productivity

• The Spread — Your Life Portfolio Is Underperforming

  The Spread is a personal values audit disguised as a crypto portfolio report. Name what matters to you, show where your time actually goes, and get devastating analyst commentary on the gap.

  Checkers & references · Money & crypto

• The Flip – Map Your Advantages Against Historical Inversions

  Inventory your personal dependencies – passport, credentials, platforms – and cross-reference them against concrete historical flips. Find out which advantage becomes a cage first, and what survives.

  Checkers & references · Travel & transport

• The Forensics — The family fact-checker, without the burnout

  Paste any forwarded message. We dissect the manipulation pattern, list the red flags, and draft a kind reply you can actually send back. Built for the family skeptic.

  Checkers & references · Everyday life

• TG Risk Check — See what lawyers say about your Telegram action

  Pick a Telegram action — renew Premium, send a paid message, use Wallet — and instantly see verbatim quotes from named legal experts and officials about that exact action. Sourced, dated, no legal advice.

  Checkers & references · Safety & emergencies

• Stay Go — Should I Evacuate or Shelter? 60-Second Decision Tree

  A thinking aid that helps you decide to evacuate or shelter in 60 seconds for wildfires, floods, chemical spills, power outages, and civil unrest. Four questions, one clear answer. Always follow official evacuation orders.

  Checkers & references · Safety & emergencies

• Speed Risk — See Your Real Crash Risk Multiplier Before You Drive

  Enter your speed and road condition to instantly see your stopping distance, crash risk multiplier, and fatality risk — every formula cited, no scare tactics, just physics you can verify.

  Checkers & references · Safety & emergencies

• Solar Quote Check — Verify Installer Incentives Against Official Sources

  Verify any solar installer quote in 30 seconds. 12 countries, 5 incentive fields, explicit source dates, editable payback calculator. No account, no tracking.

  Checkers & references · Everyday life

• Smell Safe — Know what to do when industrial odors hit

  Smell Safe helps residents near industrial zones identify immediate graded actions (ventilate, monitor, evacuate, call) by matching odor character and symptoms to cited exposure limits from ACGIH 2024 TLVs and WHO 2021 guidelines.

  Checkers & references · Safety & emergencies

• Slip Check — See your exact slippage before you buy

  Calculate personalized slippage, price impact, and tokens received for any AMM trade. Enter pool liquidity and buy amount from DexScreener — get instant results with constant-product formula shown step-by-step.

  Checkers & references · Money & crypto

• 2 AM Sleep — CBT-I Techniques for Your Specific Insomnia Symptom

  A free, no-signup reference that matches your specific insomnia symptom to 2-3 evidence-based CBT-I techniques with clinical citations. Designed for the 2 AM moment when you need the right technique, not another generic listicle.

  Checkers & references · Health & body

• Said/Seen — Seal the gap between what they said and what you saw

  Record the difference between official narratives and your direct witness. Hash-stored on-chain with an immutable timestamp. No edits, no deletions — your unalterable record of the truth you lived.

  Checkers & references · Everyday life

• The Rope Check — Is your safety system rated for your speed?

  Before you sign, commit, quit, or leap — inspect your rope. A speed-safety inspection tool that reveals whether your safety system can respond at the speed you

  Checkers & references · Safety & emergencies

• Risk of Entry — Your real travel risk, in 30 seconds

  Risk of Entry is the first personalized travel risk lookup — enter your passport, destination, and exposure factors to get a data-backed risk score in 30 seconds. Built for the era of extraterritorial enforcement and weaponized Interpol notices.

  Checkers & references · Safety & emergencies

• Ride Safety Audit — 30-Second Pre-Ride Checklist

  Verify 6 ride details in 30 seconds. Get a calibrated risk level (Green/Yellow/Red) and a personalized verbal script with your contact & ETA. Works offline, no tracking.

  Checkers & references · Travel & transport

• Repair Rights Check — Know Your EU Spare-Part Rights in 10 Seconds

  Pick your appliance and purchase year. Get the exact EU spare-part availability years, repair-information rights, and directive articles you can cite. No account, no jargon, one-tap copyable card.

  Checkers & references · Law, rights & politics

• 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

• Is My Car Recalled? — Free VIN Recall Check with Risk Verdict

  Enter your VIN and get an instant, plain-English recall verdict from live NHTSA data. Transparent risk classifier tells you whether to stop driving or fix it at your next service.

  Checkers & references · Safety & emergencies

• Privacy Check — Hidden Camera Check for Hotel, Airbnb & Changing Rooms

  Check any room for hidden cameras in 60 seconds — no app, no reading, just your eyes and phone flashlight. Space-specific visual checklist backed by EFF, FTC, and law enforcement guides.

  Checkers & references · Law, rights & politics

• Prep Index — Emergency Action Cards Sourced from FEMA, Red Cross & WHO

  Searchable emergency checklists. Tap a scenario and get one card: DO NOW, HAVE READY, AVOID — every line sourced from FEMA, Red Cross, or WHO.

  Checkers & references · Safety & emergencies

• Powerbank Fly — Can I bring my powerbank on a plane?

  Free tool for travelers. Enter the mAh and voltage from your powerbank, drone battery, or spare lithium pack label — get an instant cabin-ok / needs-airline-approval / banned verdict with the exact IATA rule cited and which bag to pack it in.

  Checkers & references · Travel & transport

• Post Check — Check any post for privacy risks before you share

  Post Check is a free tool for anyone who

  Checkers & references · Safety & emergencies

• 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

• Plain Speak — decode diplomatic jargon in 3 seconds

  A reference glossary that translates diplomatic and political euphemisms into plain English subtext, with real usage examples. Built for news readers who hit jargon mid-article.

  Checkers & references · News & media

• Pet Safe Clean — Instant Pet-Safe Verdict for Any Cleaning Product

  Free tool that tells pet owners if a cleaning product is safe for their specific animal. Select pet species and product category for an instant color-coded verdict with the toxic ingredient named.

  Checkers & references · Safety & emergencies

• Pet Ready — Species-Specific Pet Emergency Checklist

  Get a pet emergency checklist built for your exact animal, threat, and home. Sourced from ASPCA, FEMA, Humane Society, and AVMA. No account, no data stored.

  Checkers & references · Safety & emergencies

• Pet Evac — Species-Specific Pet Evacuation Checklist in 60 Seconds

  A scannable, printable evacuation action checklist for your exact pet type. Select your animal and get carrier requirements, food and water amounts, medications, temperature tolerance, shelter acceptance rules, and vet-labeled stabilization basics.

  Checkers & references · Safety & emergencies

• Payment Privacy Grid — Stop $0.01 Payment Stalking Across 8 Apps

  Select your payment apps to see the exact toggle name, Settings path, and whether it blocks $0.01+message harassment. Sourced from official help centers with verification dates.

  Checkers & references · Law, rights & politics

• Pack Clear — Check Your Packing List Against Customs Bans

  Pack Clear cross-references your packed items against destination-specific customs regulations. Instantly see which items are banned, restricted, or need declaration, with fine amounts and official source links.

  Checkers & references · Travel & transport