Software
They run on your own computer and open in your browser. Every listing says what you need, what a run costs you and where your text goes.
Every Kitson Pro document comes with “Why I suggested this” and “Check these yourself”, and downloads as a Word file.
Thirty-second version
Start with the job. Each card takes you to the apps made for it.
Kitson Pro · works with Claude Opus 5.5
Contract Explainer, Job Application Tailor, Business Plan Reviewer, Complaint Letter Writer, Study Guide Maker, Spreadsheet Formula Builder, Grant Application Helper, Small Business Policy Writer, Meeting Action Plan and Document Q&A.
Guided questions and a built-in sample, so you never face a blank box. When an app quotes your document, it checks the wording and marks any quote it cannot find.
Not for you if you need professional advice: these apps explain, summarise and draft, and what they write can be wrong.
What each one does: the app guide.
What you need: 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.
$29 each
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).
Get all 10 Kitson Pro apps · $249 Watch 10 free videos firstPay on Payhip with PayPal or card Instant download Can’t get it running? Email within 14 days: help, or a refund of the app price
App Maxxing Early release
Spreadsheet Formula Checker, Data Sheet Comparer, Statistics Reporting Checker, Revision Change Register, Test Results Against Limits, Reference List Checker, Long Report Consistency Checker, Evidence Table Builder, Requirements Trace Matrix and Reviewer Response Matrix.
The apps point things out for you to check: they do not certify, approve or sign off anything.
What each one does: the app guide.
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.
What 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.
$39 each
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).
Get all 10 App Maxxing apps · $335 Watch 10 free reviews firstPay on Payhip with PayPal or card Instant download Can’t get it running? Email within 14 days for a refund of the app price
Quick sorting apps
Paste a pile of messages, reviews, tasks or transactions and get them sorted, with unsure rows marked for you to check, and a spreadsheet (CSV) download.
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.
Not for legal, medical or emergency messages. Automated sorting can be wrong.
What each one does: the app guide. Also sold on Ko-fi.
$13 each
All 10 quick sorting apps in one download: $110. Code SAVE10 takes the package to $99.
Get all 10 quick sorting apps · $110 Watch 10 free videos firstPay on Payhip with PayPal or card Instant download Can’t get it working? Email within 14 days for help, then a full refund if we still can’t
Private AI apps Early release
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.
These are early, educational releases: we’re learning and improving them with every update, and AI answers can be wrong.
What each one does: the app guide. Also sold on Ko-fi.
$16 to $21 each
Seven apps, bought one at a time. All seven are also inside the Mega Bundle below.
Pay on Payhip with PayPal or card, or on Ko-fi Can’t get one running? Email within 14 days and I’ll help, or refund you
Two more families, each with its own page
Biz Maxxing Sales
All ten are out, from follow-ups, quotes, sales reviews and forecasts to objection practice, commission statements, win-loss analysis and call reviews. Figures come from code; the apps never contact customers.
Each app is reviewed on video by Biz. Biz is an AI host with a computer-generated voice; his background is a character story written by Kit, who runs Kitson Workshop and reviews every script.
Kitson Maxxing Trading
Review your own trades against your own rules, test a strategy honestly, practise with the future hidden. Every number is worked out and checked in code, and the apps never tell you what to buy or sell.
Educational only. Not financial advice. Trading can lose money. The apps never place trades.
From each listing, October 2026
Four families, one table. Read the row for your family before buying.
| Detail | Kitson Pro | App Maxxing | Quick sorting apps | Private AI apps |
|---|---|---|---|---|
| Apps | 10 | 10 (early release) | 10 | 7 (early release) |
| Price | $29 each; all 10 $249 | $39 each; all 10 $335 | $13 each; all 10 $110 | $16 to $21 each |
| AI service | Claude Opus 5.5 (switchable to Sonnet 5.5) | OpenAI models | Jev, a fast decision model from TypeSafe AI | Free Ollama on your computer, or your own AI provider |
| What you need | Your own Anthropic account and key. A Claude chat subscription does not include it. | Your own OpenAI account with API access and a key. A ChatGPT subscription does not include one. | Your own API key from TypeSafe (may have a waitlist) or Vercel AI Gateway | Ollama with 8 GB+ RAM (Private mode), or your own AI provider key (Cloud mode). No AI model is included. |
| Running cost (our tests) | About 4 to 30 cents a run, paid to Anthropic | About 3 to 35 cents a run on short sample files, paid to OpenAI; longer files cost more | About a thousandth of a cent per check at launch prices, paid to your provider | Nothing extra in Private mode; your provider’s prices in Cloud mode |
| Where your text goes | To Anthropic, under its terms. Not to us. | To OpenAI, under its terms. Not to us. | To TypeSafe (or through Vercel), after the app removes email addresses, phone numbers and card-like numbers | Stays on your computer in Private mode; to your provider in Cloud mode |
| Cost controls | Cost shown before and after each run; you set a limit for one run | Cost shown before and after each run; you set a limit for one run | — | — |
| Watch first | 10 free videos | 10 free reviews | 10 free videos | See the app list |
| If you can’t get it running | Email within 14 days: help, or a refund of the app price | Email within 14 days: a refund of the app price | Email within 14 days: help, then a full refund if we still can’t get it working | Email within 14 days: help, or a refund |
Running costs are our own measurements on sample inputs and depend on your documents and on each provider’s prices, which can change. Kitson Workshop is not affiliated with or endorsed by Anthropic, OpenAI, TypeSafe AI or Vercel.
Packages
Code SAVE10 = extra 10% off any package below.
Mega Bundle: 36 products
$440 for 36 products
$550 if bought separately. The Mega Bundle price is applied automatically, with no code needed.
Pay on Payhip with PayPal or card Instant download Can’t get it working? Email within 14 days for help, then a full refund if we still can’t
Budget planner spreadsheet + Debt Payoff Workbook + Sinking Funds Workbook: pay off debt, then stay out of it.
$45 · $40.50 with SAVE10
Buy on PayhipTax tracker spreadsheet, tax set-aside workbook, Expense Sorter and Lead & Form Sorter.
$61 · $54.90 with SAVE10
Buy on PayhipListing Writer, Reply Desk, Review & Comment Moderator and the Price It Right pricing book.
$58 · $52.20 with SAVE10
Buy on PayhipSort by urgency, draft calm replies, check the tone before you send.
$40 · $36 with SAVE10
Buy on PayhipStudy Buddy app, Study Smarter workbook and Task Prioritizer. Ages 13+.
$39 · $35.10 with SAVE10
Buy on PayhipCode Explainer, Read Code You Didn’t Write, and Bug Report Triage.
$49 · $44.10 with SAVE10
Buy on PayhipFinish-your-first-Godot-game workbook, Bug Report Triage and Feedback Theme Sorter.
$40 · $36 with SAVE10
Buy on PayhipJob Match Checker, Email Writer and Email Tone Check.
$38 · $34.20 with SAVE10
Buy on PayhipMoney Smart Kids, No More Surprise Bills and Expense Sorter.
$35 · $31.50 with SAVE10
Buy on PayhipEvery quick app in one download, all using your one Jev key.
$110 · $99 with SAVE10
Buy on PayhipTen 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
Buy on PayhipEvery 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
Buy on PayhipInstant downloads
Spreadsheets that do the math for you, plus printable planners and templates.
Excel (.xlsx) · Excel 2016 or newer
$20
For personal budgeting and education only; not financial advice.
Excel (.xlsx) · Excel 2016 or newer
$22
Helps you organize your numbers; not tax advice.
Secure checkout by Payhip or Ko-fi, with PayPal Instant download Can’t get it working? Email within 14 days for help, then a full refund if we still can’t
Free, no sign-up: the One-Page Budget (PDF) and the seller fee calculator, which shows what you keep after PayPal, Payhip, Ko-fi, Fiverr or Etsy fees. Want a template we don’t make yet? Tell me what you’d use.
Small jobs, clear prices
Tell me what you need, I reply with a fixed price and delivery date, and you pay a PayPal invoice before work starts.
Python, JavaScript, PowerShell or GDScript. Working, commented code with an explanation of the fix.
from $35
Movement, cameras, inventory, loot, save/load and UI, delivered with a demo scene.
from $75
Fast, mobile-friendly sites you can host for free, with contact forms and PayPal buttons.
from $100
Clean, merge and format Excel or CSV data, or automate a task you repeat every week.
from $35
Work is AI-assisted, then reviewed and tested before delivery.
No. Kitson Pro needs an Anthropic API account and key, and App Maxxing needs an OpenAI API account and key. Chat subscriptions do not include API access. Each listing explains how to get a key.
Only the private AI apps in Private mode, which use free Ollama on your own computer. The other three families send your text to their AI provider.
Yes. Every family says so on its listing. Check anything that matters before you rely on it.
Watch the free videos for the family first, and read the setup section of the listing. If you buy and can’t get it running, email [email protected] within 14 days.
For educational purposes only: not legal, financial, tax, medical or other professional advice. Read the full app comparison · Terms