Small software.
Built like it matters.

Independent apps, field calculators, and embeddable tools for people who do real work. Each one is focused, documented, and maintained by the person who built it.

Explore the apps Read the build notes

Tools for real work, made to be used.

Built for the jobPractical inputs and clear results.

Embeddable by designFocused components when a site needs them.

Transparent processDecisions documented in public build notes.

Useful on purpose.

Practical software for builders, makers, and small-business operators. No inflated suite, no feature theater.

Live and free

Site Check-up

Run a check-up →

Live and free

Contractor Calculators

Field math for estimates, materials, and job planning.

Open calculators →

Live and free

Etsy Fee Calculator

See the marketplace math before choosing your channel.

Compare fees →

Live

Embeddable Widgets

Focused components that add a useful action to a site.

Browse widgets →

The code is part of the product.

Useful software should explain itself, respect the person using it, and stay understandable after launch.

Static-first delivery: Pages are prerendered when they do not need request-time logic.
Accessible interfaces: Semantic structure, visible focus, readable contrast, and reduced-motion support.
Privacy-aware measurement: Collect only what helps operate and improve the product.
Documented decisions: Tradeoffs and implementation details live in public build notes.

Browserrequests a page→ Cloudflare edgeserves static assets→ App logiconly when needed→ VertaFlowCRM actions only

worker.tsBUILD NOTE

01 const url = new URL(request.url);
02
03 if (isStaticAsset(url)) {
04   return env.ASSETS.fetch(request);
05 }
06
07 return handleAppRequest(request, env);

Build notes,
not content filler.

Architecture decisions, implementation details, and lessons from shipping useful web tools.

Jul 19, 2026 Architecture

How I ship a static Astro app on Cloudflare

The exact boundary I use between prerendered pages, browser-side calculations, Worker routes, assets, cache headers, and release checks.

Read →

Jul 18, 2026 Technical SEO

Canonical strategy across a three-domain product family

How I divide intent, redirects, sitemaps, internal links, and entity references across .online, .com, and VertaFlow without making three sites compete.

Read →

Jul 17, 2026 Product SEO

What a useful calculator page needs to earn search visibility

A calculator needs more than inputs and a result: clear intent, visible math, useful defaults, explanations, examples, FAQs, and an honest ownership model.

Read →

See every build note →

Common questions

Are the tools really free?

The Site Check-up, contractor calculators, and Etsy Fee Calculator are free to use without creating an account. A product page states clearly when an optional service or paid component is separate.

What data do the apps store?

Most calculators run entirely in your browser. The Site Check-up sends the public URL you enter to the same-origin audit service so it can run the job. Contact details are collected only when you choose to submit them. The privacy page documents the current behavior.

Can I embed these on my site?

Some tools have an embeddable version and others are designed to stay on this site. The Widgets page identifies what can be embedded and what requires VertaFlow or a custom implementation.

Who builds and maintains them?

Anthony Jones designs, builds, tests, and maintains this product division from Rome, New York. The source decisions and implementation lessons are documented in the Build Notes.

View all FAQs →