Product 001
Change Check
Mac appAvailable
Check what changed before you import the next spreadsheet.
$19one-time launch licenseView product
Small tools. Thoughtfully made.
Useful tools.
Less busywork.
For work that shouldn’t be manual.
Focused apps and workbooks that do one job exceptionally well.
US$19 · one-time purchase · 3 devices
No setup calls.No implementation projects.Just useful tools.
THE PLAIN METHOD COLLECTION001 / 004
Seller Profit & Inventory OSExcel workbook · US$24.99 one-time
AvailableQuote & Margin OSExcel workbook · US$16.99 one-time
AvailableRental Business Operations OSExcel workbook · US$24.99 one-time
AvailableFocused apps and workbooks, from Plain Method.Native app recording · Synthetic samples
Built for the work.Focused tools ✳Clear pricing ✳No busywork about the busywork.
The product store
Tools that solve one job well.
Product 002
Seller Profit & Inventory OS
Excel workbookAvailable
Stop guessing what you made. Track stock, fees, shipping, COGS and real order profit in one practical Excel workbook.
$24.99one-time purchaseView product
Product 003
Quote & Margin OS
Excel workbookAvailable
Price service jobs with overhead and contingency, compare floor and target quotes, and prepare a printable customer quote.
$16.99one-time purchaseView product
Product 004
Rental Business Operations OS
Excel workbookAvailable
Track rental bookings, pooled inventory, deposits, returns, damage, and maintenance in one practical Excel workbook.
$24.99one-time purchaseView product
How Plain Method works
Less setup. More done.
◎Find the job→
✳Pick a focused tool→
↗Make room for real work
01
Pick a tool
Understand what it does in seconds. One clear job, made simple.
02
Open it
No setup call. No implementation project. Just a useful tool for the job.
03
Get the result
The tool does its job and gets out of your way. Get back to yours.
The Plain Method way
Built around
the work.
Not around
the AI.
The best tools don’t ask for your attention. They give you some back.
A little structure. A lot less guesswork.
01A clear input▤
02A focused check⌘
03An answer you can inspect✓
01
Focused by design.
One tool. One clear job. Every feature earns its place.
02
Ready when you are.
No sales call, consultants, or onboarding project.
03
Local when it matters.
Tools work close to the files and records you already use.
04
A price you understand.
Individual tools. A future Pass. Clear terms for each.
05
Evidence over magic.
When a result matters, you should be able to inspect it.
In focus · Product 001
Meet Change Check.
Check what changed before you import the next spreadsheet.
A closer look$19 one-time
New from Plain Method
A small beginning.
Explore the Plain Method collection.
Focused apps and workbooks for real work.Questions, answered
A few things to know.
Clear answers. No small-print surprises.
What is Plain Method?
Plain Method makes focused apps and workbooks for real work. We start with a clear job and build a tool that is easy to understand and use.
Are these AI tools?
Each tool starts with the work it needs to do. Some future tools may use AI when it helps; Change Check compares spreadsheets using explicit identifiers and rules. AI is not a requirement for the library.
Do I need a subscription?
Individual products have their own purchase terms. Change Check is available for a US$19 one-time launch license. Plain Method Pass is a separate, coming-soon membership option.
Can I buy tools individually?
Yes. Each product page shows its purchase link and terms. Change Check and Underlimit checkout are hosted by Creem; Seller Profit & Inventory OS, Quote & Margin OS, Rental Business Operations OS, and Operations Review & KPI OS are delivered by Payhip after a one-time purchase.
What is Plain Method Pass?
A planned membership for access to eligible Plain Method tools while membership is active. Pricing, the eligible library and any member benefits will be announced before launch.
What types of products does Plain Method offer?
The collection includes desktop apps and Excel workbooks, with requirements listed on each product page. Change Check and Underlimit are Mac desktop products; Windows availability for Change Check will be announced separately.
Do I need a setup call?
Our goal is zero-touch tools: understand what a product does, install the app or open the workbook, and use it to get a useful result. No sales call or implementation project should be needed.
How do updates work?
Update and upgrade terms will be stated for each product before purchase. A one-time purchase does not promise every future major version or every future Plain Method product.