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Terms of use

Last updated 29 July 2026.

Tessalor is a Telarsa product.

This site is operated by Tessalor. Using it means accepting these terms. They are short because there is very little going on: no accounts, no data held, no service to be unavailable.

Using the tools

The free tier is open to anyone, with no account and no sign-up. You may use the tools for personal or commercial work. You may not resell access to them, present them as your own, or scrape the site to rebuild the catalogue elsewhere.

The tools run on your device. What you do with them, and with their output, is yours and your responsibility.

Estimates, not advice

Every result is an estimate produced by a published formula under stated assumptions. See the disclaimer. Nothing here is financial, tax, legal or medical advice, and no professional relationship is formed by using it.

Current offering

Every tool in the current catalogue is free. No paid tier is offered for sale, and no licence, account or payment is required.

Availability

This is static hosting with no uptime commitment. Tools already loaded in your browser may continue to work temporarily while the site is unreachable.

Liability

The service is provided as-is, without warranty of any kind. To the fullest extent permitted by law, Tessalor's total liability is limited to the amount you paid, which for most people is nothing.

Changes

These terms may change. Material changes will be noted on this page with a new date. Continuing to use the site means accepting the current version.

Questions: hello@tessalor.com.