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EngineeringMay 28, 2026·5 min read

Why we build custom instead of Shopify or WordPress

OS

OnStack Engineering

The build team

Most founders start on Shopify or WordPress because they look like the safe choice. They are fast to stand up and everyone has heard of them. The problem is what happens after launch.

The rented-platform tax

Shopify takes a cut of every sale, forever. On top of your monthly fee, transaction fees quietly skim your margin on every order - and the more you grow, the more you pay for the privilege of using someone else's checkout.

WordPress looks free until you count the real cost: a stack of plugins that need constant updating, security holes when you forget, and a site that slows to a crawl as those plugins pile up. One bad update and your shop is down on a Saturday night.

What "custom" actually means

When we build custom, you get a site coded specifically for your business on a modern stack - the same Next.js and PostgreSQL foundation the best product teams use. That means:

  • Zero platform transaction fees. Your checkout is yours. Keep your margin.
  • Speed by default. No plugin bloat. Pages load in a blink, which Google rewards.
  • A design that fits. Not a theme 10,000 other stores also use.

The hidden cost templates never mention

Speed is not a vanity metric. Google ranks faster sites higher, and shoppers abandon slow ones. A custom build that loads in under a second quietly earns you traffic and conversions a bloated template leaks every day.

"But isn't custom more expensive?"

Up front, a traditional agency would charge a fortune. That is exactly why we built our subscription model - we absorb the build cost and you pay a simple monthly fee that includes hosting, your Command Centre, your Client OS portal, and dev time for updates. You get custom-grade engineering without the custom-grade invoice.

And if you ever want to leave, you can. You own your storefront and your data, 100%. That is the part the rented platforms will never offer you.

See your custom site, free.

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