Budget planners, money trackers and game systems, made from scratch by Kitson. Instant download after checkout, paid securely with PayPal or card.
Free videos and samples on every page
History of Computers: 20 free videos with printable lessons for ages 11-14. Lesson 1 is free.
Free to $129Kitson Arcade: ten original 8-bit browser games. Play level 1 of each free, no ads, no accounts.
Free demos · $6, or $29 for all 10Kitson Maxxing Sales: honest AI helpers for customer follow-ups, quotes and proposals, monthly shop reviews and sales copy checks. You check every draft; the apps never contact customers.
Free video reviews · App downloadsKitson Maxxing Trading: ten educational apps that review your own trades and test strategies honestly. They never place trades.
$49 to $69 · $449 for all 10A tested state machine and save/load kit, and a workbook for finishing your first game.
from $11Ten safe, practical first jobs for a dot, each with a free video and a free step-by-step ebook.
FreeTen engineers of the 1950s, from the seat belt to the laser. Free videos and sourced books.
$19 booksTen AI scientists whose recent work helps people, in sourced Maxxing Edition books.
$39 booksTen honest tips for new creators, each with a free video and a free book.
FreeA budget and debt payoff planner, workbooks, and a free One-Page Budget.
Free to $45New · $29 each · works with Claude Opus 5.5
All 10 Kitson Pro apps in one download: $249. Bought separately they cost $290. Code SAVE10 takes a further 10% off the package ($224.10).
A plain-language walk-through of a contract or lease before you sign: dates, money, unusual terms and questions to ask.
$29 · BuyYour resume and cover letter matched to one job posting. Never invents experience you don't have.
$29 · BuyA frank review of your plan or pitch: what is strong, what is missing and what a reader will ask.
$29 · BuyA firm, polite, factual complaint letter, a shorter email version and a follow-up for when nobody replies.
$29 · BuyTurn a chapter or your notes into a summary, key terms, flashcards and a practice quiz with answers.
$29 · BuyDescribe what you want; get the Excel or Google Sheets formula, explained, with test cases to run yourself.
$29 · BuyA draft answer to each grant or scholarship question from your own notes, plus what is still missing.
$29 · BuyFirst drafts of plain-language refund, delivery and privacy pages, plus what to settle with a professional.
$29 · BuyA transcript or rough notes in; decisions, a task table with who and when, and a follow-up email out.
$29 · BuyAsk questions about a long document. Quotes are checked against your text and marked if not found.
$29 · BuyWhat you need (please read before buying): each app runs on your own computer with free Node.js 18+ (Windows, Mac or Linux) and your own Anthropic account and key. You pay Anthropic directly for what you use, on top of the price of the app: in our own tests a run cost about 4 to 30 cents. The app shows the cost before each run and after it, and you set a limit for one run. A Claude chat subscription does not include this.
Every finished document comes with "Why I suggested this" and "Check these yourself", and downloads as a Word file. For educational purposes only: not legal, financial, tax, medical or other professional advice, and what the apps write can be wrong. Kitson Workshop is not affiliated with or endorsed by Anthropic. If you can't get one running, email [email protected] within 14 days and I'll help, or refund the price of the app.
Early release · $39 each · needs your own OpenAI API key
Early release: please read before buying. Each app needs your own OpenAI API key. It will not run without one, and a ChatGPT subscription does not include one. These apps still need further testing: each has passed our own offline tests and has been run on its built-in sample against the live service (October 2026), but has not yet been tried on a wide range of real files. You may meet faults. After you buy, please tell us what you find: email [email protected] with the subject "Maxxing feedback". Fixes are sent to buyers free.
All 10 App Maxxing apps in one download: $335. Bought separately they cost $390. Code SAVE10 takes a further 10% off the package ($301.50).
Look for the odd formula, the typed-over number and the total that misses a row in your own Excel workbook.
$39 · BuySet two to five data sheets side by side: every value with its sentence and page, units converted in code, and "not like for like" where the conditions differ.
$39 · BuyBuild one table from papers you may send: one row a paper, each value with its sentence and page, sent in planned batches.
$39 · BuyCheck that the statistics in your own manuscript agree with each other: p-values reported with a t, F, chi-square, r or z statistic are re-computed in code.
$39 · BuyLook for the places where your own long report does not agree with itself: a value given two ways, a table that does not add up, a reference to a table that is not there.
$39 · BuyCompare your measured results with the limits in your own specification. The model reads the limits; the app does every comparison.
$39 · BuyTie the citations the app can read in your own manuscript to their entries in the reference list, and see the loose ends.
$39 · BuyDraft a point-by-point response to the reviewers of your own manuscript, with each change it cites looked up in your revised file.
$39 · BuyCompare two revisions of your own document. The app finds the differences in the text itself; the model only describes them.
$39 · BuyWhich of your requirements have a test pointing at them? The app finds the IDs and the references itself; the model only suggests links, and none counts until you tick it.
$39 · BuyWhat you need: each app runs on your own computer with free Node.js 18+ (Windows, Mac or Linux) and your own OpenAI account with API access and a key. You pay OpenAI directly for what you use, on top of the price of the app: in our own tests on short sample files a run cost about 3 to 35 cents, and longer files cost more. The app shows the cost before each run and after it, and you set a limit for one run.
For educational purposes only, and for your own research and your own documents. The apps point things out for you to check: they do not certify, approve or sign off anything, what the AI writes can be wrong, and they are not a substitute for review by a qualified person. Kitson Workshop is not affiliated with or endorsed by OpenAI. If we cannot get an app running for you, email [email protected] within 14 days for a refund of the app price.
Code SAVE10 = extra 10% off any package
Mega Bundle: 36 products, 20% off. 7 spreadsheets, 8 ebooks, 2 printable packs, a website template, a Godot kit, 7 private AI apps and 10 quick sorting apps in one download. $550 if bought separately; the Mega Bundle price is $440, applied automatically with no code needed.
Budget planner spreadsheet + Debt Payoff Workbook + Sinking Funds Workbook: pay off debt, then stay out of it.
$45 · $40.50 with SAVE10 · BuyTax tracker spreadsheet, tax set-aside workbook, Expense Sorter and Lead & Form Sorter.
$61 · $54.90 with SAVE10 · BuyListing Writer, Reply Desk, Review & Comment Moderator and the Price It Right pricing book.
$58 · $52.20 with SAVE10 · BuySort by urgency, draft calm replies, check the tone before you send.
$40 · $36 with SAVE10 · BuyStudy Buddy app, Study Smarter workbook and Task Prioritizer. Ages 13+.
$39 · $35.10 with SAVE10 · BuyCode Explainer, Read Code You Didn't Write, and Bug Report Triage.
$49 · $44.10 with SAVE10 · BuyFinish-your-first-Godot-game workbook, Bug Report Triage and Feedback Theme Sorter.
$40 · $36 with SAVE10 · BuyMoney Smart Kids, No More Surprise Bills and Expense Sorter.
$35 · $31.50 with SAVE10 · BuyEvery quick app in one download, all using your one Jev key.
$110 · $99 with SAVE10 · BuyTen checking tools for engineers and scientists in one download. Early release: needs your own OpenAI API key and still needs further testing.
$335 · $301.50 with SAVE10 · BuyEvery printable lesson from the free video series in one download, ages 11-14. Lessons 2 to 20 cost $152 bought one by one.
$129 · $116.10 with SAVE10 · BuyPrintable PDFs
A freelancer's tax workbook, US edition. General education, not tax advice.
$19 · BuyFree videos, with a printable lesson for each one
All 20 printable lessons in one download: $129. One lesson for each episode, from the abacus to AI on your own desk. About a term of lessons at one a week. Bought one by one, lessons 2 to 20 cost $152.
How the abacus taught us to count. A free 5-minute video with our own drawings.
Free · Watch the videoA 10-page printable lesson that follows the video step by step: pause times, questions, a worksheet and a quiz with answers. Ages 11-14. Lesson 1 is free, so you can try it with your class.
Free · Get the lessonBronze gears from a Greek shipwreck, and the first machines that could do sums. A free 6-minute video.
Free · Watch the videoA 12-page printable lesson that follows the video: pause times, questions, two worksheets with a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA loom that reads punched cards, Babbage's engines, and Ada Lovelace's notes. A free 7-minute video.
Free · Watch the videoA 12-page printable lesson that follows the video: pause times, questions, a "be the engine" game with counters, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA census that took years to add up, and the machine that read holes in cards with electricity. A free 7-minute video.
Free · Watch the videoA 12-page printable lesson that follows the video: pause times, questions, a "be the tabulator" card-counting game, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyAn imaginary machine from 1936, the Enigma puzzle, and the machines built to help solve it. A free 7-minute video.
Free · Watch the videoA 12-page printable lesson that follows the video: pause times, questions, a paper tape machine, a turning-wheel cipher, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA computer the size of a room, the women who programmed it, and the big argument: which computer was first? A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a "Paper Baby" stored-program game, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA slab of germanium, a prize for three, and a prediction that the parts on a chip would keep doubling. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, logic gates played with counters, doubling sums, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyComputers rented by the month, languages that looked like maths and English, and a five billion dollar gamble on one family of machines. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a "be the compiler" game, numbers built from four boxes, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA computer with a screen for one operator, a space battle game, an $18,000 machine for one lab, and a system rewritten in C and then moved. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a "chalk disk" file list, a "Move it" game on two pretend machines, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyAn order for calculator chips, four engineers, the Intel 4004, and a processor sold for twenty-five dollars. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a "program the chip" game with counters, numbers shown with four bits, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA computer sold as a kit, a club of hobbyists, three ready-built machines in 1977, the first spreadsheet program, and the home computers of the early 1980s. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a 256-box memory grid, a paper spreadsheet with "what if?" questions, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA personal computer built in a year from off-the-shelf parts, an open design, and the compatible machines that made it a standard. A free 8-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, "make or buy" sums, a "clean room" rule-finding game, a ten-counter market share model, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyAn imaginary desk that linked documents, the mouse and a famous demonstration in 1968, a research computer that was never sold, and the Lisa, the Macintosh and Windows. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a "roll the mouse" grid game, pictures made from squares, a "three windows" puzzle, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyThe first computers joined in a network, messages cut into packets, the at sign, networks joined into an internet, and the Web that began at CERN. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a packets game with paper strips, a gateways model, a paper web of linked pages, a cut-out timeline, and a quiz with answers. No computer needed. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA 24-pound computer you could carry, a low-power chip from Britain, a black laptop with a red pointer, a wooden model in a pocket, and a phone, music player and internet device in one. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, halving and weighing sums, a "count the steps" design game, a hundred-square model, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyGame graphics in the 1990s, a chip its maker called a graphics processing unit, many sums at once, science on graphics chips, and a thousandfold speed-up in ten years. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, pixels coloured by rule, "hand over the sums" and "share them out" games, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuySharing one big computer by turns in the 1960s, a rack of 80 PCs, renting storage and computing by the hour, and the buildings full of computers behind it all. A free 8-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a "take turns" sharing game, racks, hours and gigabytes sums, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA machine from 1958 that learned to sort cards, the lean years, a library of labelled pictures, a network trained on two graphics cards, and the awards that followed. A free 8-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a paper "sorter" that learns from its mistakes (our own model), counting games, a cut-out timeline, and a quiz with answers. No computer needed. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyA 1966 program with canned replies, the 2017 paper behind the Transformer, models that predict the next piece of text, and the chat assistants that followed. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, a paper next-word model built from a tally table (our own model), why a fluent sentence can still be untrue, a cut-out timeline, and a quiz with answers. No computer or AI tool needed. Ages 11-14. Pay once, reuse with your own class.
$8 · BuyThe series finale: small desktop computers with 128 GB of shared memory, why the largest models still run in data centres, and a look back from the abacus. A free 7-minute video.
Free · Watch the videoA 13-page printable lesson that follows the video: pause times, questions, "will it fit?" memory sums, a timeline card sort across the whole series, a cut-out timeline, and a quiz with answers. Ages 11-14. Pay once, reuse with your own class.
$8 · Buy10 free videos, each with a free ebook
The 10 best, safest ways to use OpenAI's new ChatGPT dots, picked by an expert panel. Every video is free, and every ebook is a free download: a plain, readable book with step-by-step setup and instructions you can copy. Dots need a paid ChatGPT Pro or Business Premium plan and are for ages 18+. Independent: not affiliated with or endorsed by OpenAI. For educational purposes only.
A short read-only summary of your calendar and email, every weekday morning.
Free · Get the ebook · WatchSorts your inbox and drafts replies. Never sends or deletes without you.
Free · Get the ebook · WatchSpots finished jobs you haven't billed for and drafts the invoices for your approval.
Free · Get the ebook · WatchOne list from your email, with warnings in good time. Never cancels or pays.
Free · Get the ebook · WatchTurns course outlines into a deadline list and weekly plan. Plans and quizzes, never writes your work.
Free · Get the ebook · WatchSorts customer enquiries and drafts replies, asking before every message goes out.
Free · Get the ebook · WatchSchool and club emails turned into one family list. Payments and consent forms stay with you.
Free · Get the ebook · WatchTracks matching roles, drafts cover letters and reminds you to follow up. You send every application.
Free · Get the ebook · WatchResearches options, keeps a shortlist and re-checks prices. You decide and you buy.
Free · Get the ebook · WatchDraft show notes, clip ideas and posts from each transcript. You edit and publish.
Free · Get the ebook · Watch10 free videos, each with a full book ($19)
Ten engineering breakthroughs from 1950 to 1960 that moved people forward: safer cars, medical scanning, implanted pacemakers, solar power, clean water, open-heart surgery, fibre optics, aerospace research, the laser and the hovercraft. Every video is free. Each book tells the full story in a regular, readable book for engineers, professionals and curious adults, with sources for every fact. Our own drawings, not photographs or likenesses. For educational purposes only.
The belt you buckle with one hand, and why its geometry works.
$19 · Get the book · WatchHow an industrial flaw detector learned to see inside the body.
$19 · Get the book · WatchMoving the pacemaker from a wall socket into the body.
$19 · Get the book · WatchThe day sunlight turned a toy Ferris wheel.
$19 · Get the book · WatchThe film that turns seawater into drinking water.
$19 · Get the book · WatchThe machine that took over a heart and lungs during surgery.
$19 · Get the book · WatchGlass threads that carry light round corners.
$19 · Get the book · WatchMeasuring where fast air turns rough.
$19 · Get the book · WatchThe pink ruby that made laser light work, and its civilian uses.
$19 · Get the book · WatchTwo coffee tins and a craft that flies on air.
$19 · Get the book · Watch"I became a movie star overnight": 10 free videos, 10 free books
Ten honest tips for new YouTube creators, one for each thing beginners struggle with most, picked by an expert panel from YouTube's own help pages and creator surveys. Every video is free and every book is a free download, with things you can try this week. The title is a joke: nobody can promise you views or money, and we don't. Not affiliated with or endorsed by YouTube. For educational purposes only.
Why four views is normal, and five free fixes for your first views.
Free · Get the book · WatchPick a viewer first, then find the gaps they're searching for.
Free · Get the book · WatchEarn the click with a clear picture and a promise you keep.
Free · Get the book · WatchOpenings that tell the right viewer they're in the right place.
Free · Get the book · WatchStart with the phone you have. Free sound and light fixes.
Free · Get the book · WatchHow each one works, and a simple four-week test.
Free · Get the book · WatchClaims versus strikes, safe music and the settings on every upload.
Free · Get the book · WatchA pace you can keep, comment filters and planned time off.
Free · Get the book · WatchThe real Partner Program levels, and how to spot fake sponsors.
Free · Get the book · WatchInstant downloads
Clean one-page invoices and quotes, with a log of what is paid and overdue. Excel.
$13 · BuyEvery application in one place, with follow-up flags and interview prep. Excel.
$13 · BuyPick the week's meals and the grocery list fills itself in. Excel.
$13 · BuyPrintable charts for kids 4 to 12: chores, Save-Spend-Give and a savings goal. PDF.
$9 · BuyA small-business site with price cards and PayPal pay buttons. HTML and CSS, with a setup guide.
$25 · BuyTested GDScript with a playable demo and 35 automated tests.
$11 · BuyInstant downloads
Secure checkout by Payhip or Ko-fi. Pay with PayPal. For personal budgeting and education only; not financial advice.
Secure checkout by Payhip or Ko-fi. Pay with PayPal. Helps you organize your numbers; not tax advice.
Want a template we don't make yet? Tell me what you'd use. The most-requested ideas get built next, and whoever asked gets first dibs at a launch discount.
Request a template · or email [email protected]
Early release
Paste an error and your code; get a plain-English explanation and a fixed version.
$21 · Payhip · Ko-fiCalm, professional replies to customer emails and reviews. You stay in control of refunds and discounts.
$19 · Payhip · Ko-fiFlashcards and quizzes from your own notes, and hard topics explained simply. Ages 13+.
$16 · Payhip · Ko-fiMessy notes in; a summary, decisions, action items and a follow-up email out.
$19 · Payhip · Ko-fiTitles, descriptions and exactly 13 tags for Etsy, eBay, Payhip and more. Never writes fake reviews.
$19 · Payhip · Ko-fiHow they run: each app runs in your browser from your own computer. Use free Ollama for Private mode (8 GB+ RAM), or your own AI provider key for Cloud mode. Needs free Node.js 18+ on Windows, Mac or Linux. No AI model is included.
What should we build next? Tell me what you'd like an AI helper for, at work, school or home. The most-requested ideas get built next, and whoever asked gets first access. Suggest an agent
These are early, educational releases: we're learning and improving them with every update, and AI answers can be wrong. If you can't get one running, email [email protected] within 14 days and I'll help, or refund you.
$13 each · your own Jev key
Paste a pile of messages, reviews, tasks or transactions and get them sorted in seconds. These small apps run on your computer and use Jev, a fast decision model from TypeSafe AI, with your own API key (about a thousandth of a cent per check at launch prices). Your text goes to TypeSafe, after email addresses, phone numbers and card-like numbers are removed; they're not offline apps.
No sign-up
Print it, fill it in, and give every dollar a job. Found it useful? Leave a tip on Ko-fi. Thank you!
See what you keep after PayPal, Payhip, Ko-fi, Fiverr or Etsy fees, or find the price that nets your target.
The same four debts paid both ways, month by month, with the real interest difference.
A plain-English guide to self-employment tax, quarterly payments and a simple set-aside habit.
Small jobs, clear prices
Python, JavaScript, PowerShell or GDScript. Working, commented code with an explanation of the fix.
from $35Movement, cameras, inventory, loot, save/load and UI, delivered with a demo scene.
from $75Fast, mobile-friendly sites you can host for free, with contact forms and PayPal buttons.
from $100Clean, merge and format Excel or CSV data, or automate a task you repeat every week.
from $35How it works: tell me what you need, I reply with a fixed price and delivery date, and you pay a PayPal invoice before work starts.
Prefer to order online? Book a service on Ko-fi.
Email: [email protected]