๐ I want to figure out my mortgage, rent, or a loan9 tools
How much per month? How long? What is the real cost over the life of the loan? Includes early-repayment savings.
๐ผI want to check my salary, tax, or take-home pay4 tools
UK, US, and general income tax โ plus overtime, bonuses, and the difference between gross and net.
๐I want to compare prices, deals, or unit costs15 tools
Multi-pack maths, energy tariffs that flip rank at certain usage, true cost-per-use.
๐ฐI want to budget, plan, or forecast my money7 tools
Monthly budget, sinking funds, invoices, cashflow, pay-yourself-first splits.
๐I want to convert a measurement, weight, or currency18 tools
Universal converter, currency, paper, ring, bra, shoe, and the awkward ones nobody else has.
๐I want to calculate compound interest, savings, or an investment6 tools
Future value, present value, retirement projections, and the magic of compound growth visualised.
๐I want to build or test a password, hash, or secret1 tools
Generate passwords, hash strings, encode/decode base64, decode JWTs, generate UUIDs.
๐งโ๐ปI want to format, validate, or debug JSON or code2 tools
JSON, regex, YAML, SQL, CSV โ linters, prettifiers, validators, and explainers.
๐ฉบI want to check or improve my BMI, calories, or macros10 tools
BMI, TDEE, calorie targets, macro split, water intake, ideal weight โ and what the numbers actually mean.
๐I want to plan a run, race, or training week4 tools
Race pace predictor, training zones, splits, VO2 estimates, hike planning โ and the honest Riegel formula.
๐ซI want to sleep, breathe, or feel calmer14 tools
Breathing exercises, grief support, anxiety, sleep, lucid dreaming, grounding.
๐ I want to take care of my aquarium10 tools
Volume, stocking, COโ, lighting PAR, water chemistry, nitrogen cycle โ the day-to-day of a planted tank.
๐I want to take care of my dog10 tools
Calorie portioner, training, life-stage, breed health โ caring for the dog without the marketing.
๐ญI want to look at the stars or the moon7 tools
Telescope eyepieces, lunar phases, deep-sky exposure, redshift, dark-sky quality.
๐ฆ I want to identify or appreciate a bird10 tools
Bird ID, song mnemonics, life list, feeder nutrition, optics โ for the birder with or without binoculars.
๐ณI want to cook, bake, or brew something11 tools
Coffee ratios, sourdough hydration, sugar stages, candy temperatures, brining, sous vide.
๐ฏ๐ตI want to learn Japanese9 tools
Hiragana, katakana, kanji, JLPT vocabulary, keigo, particles, verb conjugations.
๐ฃ๏ธI want to learn French, German, Spanish, Korean, or Chinese8 tools
Verb conjugators, pronunciation, case systems, tones, and the bits the textbook skips.
โ๏ธI want to write a cover letter, resume, or email3 tools
Cover letter, resume, business writing, emails, memos, proposals โ and the proofreading that follows.
๐คI want to work with AI or LLMs10 tools
Token counts, prompt injection defence, MCP testing, embeddings, cost/latency matrices.
๐น๏ธI want to use a Second Life or virtual-world tool7 tools
Region map, marketplace search, texture alignment, currency exchange.
๐ตI want to make music or work with audio14 tools
BPM tap, tuner, metronome, scales, chord builder, audio tone generator, Morse code.
๐I want to watch, plan, or read an anime10 tools
Binge-watch calculator, filler guide, cosplay prop scaler, con budget, character archetypes.
๐ฑI want to relax, plan my day, or be more productive13 tools
Habits, planners, sleep, mindful minutes, household emergency plan, declutter.
๐ฟI want to look up a herb, remedy, or acupressure point9 tools
Adaptogens, herbs, acupressure points, tincture ratios โ with the disclaimers traditional-medicine content needs.
๐ฎI want to play, watch, or simulate something for fun10 tools
The arcade category: simulators, sandboxes, and toys that don't take themselves too seriously.
๐ผ๏ธI want to generate or manipulate an image8 tools
Generative art, pixel painters, kaleidoscopes, mandalas, 3D spirograph.
๐ ๏ธI want a tool for the household (paint, tile, fence, garden)7 tools
Coverage calculators, material estimates, paint per coat, tile per square metre, fence post spacing.
โ๏ธI want to write better, faster, or just spell things right7 tools
Spell-check, grammar, proofreading, readability, reading time, paraphrasing.
๐I want a productivity or business tool for my SaaS4 tools
Subscriptions, MRR, churn, invoice generators, the boring-but-essential business maths.
โI want to learn or teach maths (calculus, algebra, probability)14 tools
Step-by-step solvers, formula references, visualisations for the parts of maths that look scary in a textbook.
Or browse by category or AโZ
๐ฒ Open the interactive catalogue ๐ Full index by category โญ Most popular ๐ Just added