Terms of use
Last updated: 8 November 2026
Draft: the text has yet to be reviewed by a lawyer.
These terms govern the use of Mestor (mestor.app). By using the service you accept them.
Who provides the service
Mestor is provided by Ivan Antonino Pace, e-mail nk1530htu@mozmail.com.
What Mestor does, and what it does not
Mestor estimates how pigments mix, from published measured data and the information you enter. Recipes, corrections and photo readings are the best possible estimate, not exact measurements: tubes vary from brand to brand and batch to batch, and a camera cannot tell apart colours that look alike under one light but behave differently (metamerism). Always check on the palette.
Pigments marked as estimates are not measured in your medium, and we say so.
Health and safety
Some pigments (for example cadmium, cobalt, lead) and solvents can be harmful. Mestor gives no safety advice: follow the manufacturer’s safety data sheets and good studio practice.
Permitted use
You may use Mestor for your artistic, teaching or professional work. You may not use it unlawfully, overload it with automated systems or bypass its protections.
Your content
The images you load stay on your device and remain yours. We acquire no rights in them.
Intellectual property and third-party data
The Mestor software, texts and brand belong to the provider. Pigment data come from published sources, used under their licences and credited on the site.
Free and Pro
Free features are available without an account. The Pro plan is not live yet: before it opens we will publish the purchase terms (price, renewal, cancellation and the consumer right of withdrawal).
Availability and liability
The service is provided as is and may change or be suspended. To the extent permitted by law we are not liable for indirect losses, such as wasted materials or painting results that differ from expectations. Liability for wilful misconduct or gross negligence, and the mandatory rights the law gives consumers, are not affected.
Changes
We may update these terms; the date at the top shows the latest version. Significant changes will be announced on the site.
Governing law
Italian law applies. If you are a consumer, you keep the mandatory protections of the country where you live and may bring proceedings in the courts where you reside.