Terms of use

The rules for using the Yesian studio and the apps we run for you.

Last changed: 29 October 2026

Who we are

Yesian is a craft business (obrt) registered in Croatia: Yesian, obrt za računalne usluge, vl. Jakob Crnogaj, Samoborska 3, 32000 Vukovar, Croatia (Obrtni registar, MBO 98135821), info@yesian.dev. "We" in these terms is Yesian; "you" is the person or company using the studio.

What Yesian is

In the Yesian studio you describe the app or website you need, an AI developer builds and changes it with you, and we run it on our servers. What exactly you get, what it costs and for how long is set in your offer or agreement with us; where it says something different from these terms, the agreement applies.

Your account

• Keep your sign-in to yourself and tell us at once if you think someone else used it.
• You are responsible for what is done with your account, and for the people you invite to your projects.

What is yours

• Your content (texts, images, data, what you tell the AI developer) stays yours. You let us use it only to provide the service to you.
• Once paid for as agreed, the code of your app is yours: you may take it, together with your data, to run it elsewhere. The Yesian framework it is built on is licensed to you for running and changing your app.
• You make sure you may use what you put in (texts, images, other people's data) and that your app follows the law that applies to your business.

What is not allowed

Using the studio or an app we run to break the law, to harm others or their data, to send spam, to attack other systems, or to try to get around the limits and protections of the service. We may stop an app or an account that does this, and we tell you why.

AI

The AI developer is a tool. It works carefully, but it can be wrong: check what it made before you publish it, especially calculations, prices and texts with legal effect. What it writes is checked by automatic tests and by you in the preview; publishing is always your decision.

Availability

We work to keep the studio and your apps running, backed up and secure, and we tell you about planned maintenance. We cannot promise that they never stop; agreed availability, if any, is in your agreement.

Liability

We are liable for damage we cause intentionally or through gross negligence, and as Croatian law requires. Beyond that, our liability for any one year is limited to what you paid us in that year. We are not liable for lost profit or for losses caused by content you or your users put in, or by services of others your app connects to.

Ending

You may stop using the studio at any time, as your agreement allows. When we part, we give you your code and data in a usable form, and then delete them from our servers (backups follow within twelve months).

Personal data

How we handle personal data is in our privacy policy. For the data of your app's users, you are the controller and we process it on your behalf; on request we sign a data processing agreement with you.

Changes and law

We may change these terms; we tell you by e-mail at least 30 days before a change that affects you, and you may stop using the service before it applies. Croatian law applies. Disputes go to the competent court in Vukovar, unless the law gives you, as a consumer, the right to another one.