Terms of use

usefulbuild.com is owned and operated by Karko AI Inc., 1207 Delaware Ave #412, Wilmington, DE 19806, USA. By using this site you agree to these terms. They cover the website only.

Client work is separate

Any work we do for you is governed by a written agreement we both sign, not by these terms. Prices on this site marked "from" are starting points; the fee that counts is the one in your agreement. The savings calculator gives planning estimates, not a quote or a guarantee of results.

Using this site

The content here belongs to Karko AI Inc. or its licensors. You can read it, link to it and share it for your own use. Don't republish it as your own, scrape it at scale or use our name or mark without permission.

Third-party links

The site links to services we don't control, like Cal.com for bookings and GitHub. Their terms and privacy policies apply there.

No warranties

The site is provided as is. We keep it accurate and current to the best of our ability, but content here is general information, not legal, financial or professional advice, and we can't promise the site will always be available or error-free.

Liability

To the extent the law allows, we're not liable for indirect or consequential loss from using this website. Nothing in these terms limits liability that can't be limited by law, including liability for intent, gross negligence or injury to life, body or health.

Privacy

How we handle data is on the privacy page.

Governing law

These terms are governed by the laws of the State of Delaware, USA. If mandatory law where you live gives you protections that can't be waived, those protections stand.

Changes

If these terms change, the new version appears here with a new date.

Contact

Karko AI Inc., 1207 Delaware Ave #412, Wilmington, DE 19806, USA · hello@usefulbuild.com

Effective August 29, 2026.