Terms

Last updated: 4 November 2026

These terms are the agreement between you and Devson Software, South Africa (“Devson Software”) for the Kernline browser extension and the site at kernline.dev. Contact support@kernline.dev.

Licence

Kernline is licensed, not sold. A Free or Pro licence is personal, non-exclusive, and non-transferable. One person uses one licence. A team needs one Pro licence for each person who uses Pro features.

Plans, renewal, and cancellation

Free has no charge. Pro monthly is $6/month. Pro yearly is $36/year, which is $3/month billed yearly. The price you pay is the price shown at checkout. Polar processes the payment in US dollars. Lifetime Pro is $59, paid once.

Monthly and yearly plans renew automatically until you cancel. Cancel in the Polar customer portal. Cancellation stops the next charge. You keep Pro until the end of the period you already paid for.

If we stop offering Kernline, we stop charging. Access continues until the end of the period you already paid for. We will email the address on your Polar account.

Lifetime Pro is a one-time payment with no renewal. Its licence key does not expire, and it covers Pro and Pro updates for as long as we offer Kernline. "Lifetime" means the lifetime of the product, not of the buyer. If we stop offering Kernline, we will email Lifetime buyers at least 30 days ahead and publish a final version that keeps Pro features working without a licence check. Lifetime Pro follows the same per-person licence and the same 14-day refund as other plans.

Refunds are described on the refunds page.

Acceptable use

Don’t use Kernline to break the law, to get around the licence, or to attack the extension, the site, or the payment service. Files you copy from a page may belong to someone else. You are responsible for having the right to use them.

Disclaimers and liability

Styles, Tailwind classes, tokens, and asset downloads are a best effort. Kernline does not promise they match the page, or that a copied file is one you are allowed to use. The extension and the site are provided as they are.

To the extent the law allows, Devson Software is not liable for indirect or consequential loss. Devson Software’s total liability for a claim is limited to the amount you paid for Kernline in the 12 months before the claim, or nothing if you only used Free. Nothing in these terms limits rights under the Consumer Protection Act 68 of 2008 that cannot legally be limited.

Law

These terms are governed by the laws of the Republic of South Africa. The courts of South Africa have jurisdiction.