This Privacy Policy explains how personal data is collected, used, and protected when you interact with Once UI websites, products, and related services (the "Service"), operated by Lorant Toth e.v. ("Once UI", "we", "us").
Once UI is a product line under the Dopler brand. This Privacy Policy applies only to Once UI products and services. Other Dopler products or services may be governed by separate privacy policies.
The Service includes once-ui.com, official Once UI GitHub repositories, packages, downloads, copy-paste blocks, documentation, and related materials made available by Once UI.
Data Minimisation and Analytics
Any technical data processed is limited to what is strictly necessary to operate, secure, and deliver the Service.
Once UI does not use tracking cookies, behavioural analytics, advertising pixels, or similar technologies.
We do not collect personal data for marketing, advertising, profiling, or commercial analytics purposes. We do not sell, rent, or monetise personal data.
1. Roles and Responsibilities
Depending on how you interact with Once UI, your role — and how your data is handled — may differ.
Customers (Once UI account holders)
If you have an Once UI account, you are a customer. We process your personal data to provide access to the Service, manage your account, deliver licensed products, and communicate with you.
End Users and Visitors
If you browse Once UI websites, documentation, or public repositories without an account, we may process limited technical data necessary to operate and secure the Service.
2. Data We Collect
We may collect the following categories of personal data:
Technical data: IP address, browser type, device information
Usage data: interactions with the Service, downloads, and access logs
Payment-related metadata: subscription status and transaction identifiers (payment details are processed by third parties)
We do not intentionally collect special categories of personal data.
We do not use third-party analytics services, tracking cookies, or advertising technologies, and we do not collect personal data for analytics or marketing purposes.
3. Purpose of Processing
We process personal data for the following purposes:
Providing and maintaining the Service
Managing accounts, licences, and subscriptions
Delivering updates, documentation, and support
Communicating service-related messages
Improving product quality and user experience
Complying with legal obligations
Where required by law, processing is based on your consent. In other cases, processing is necessary for contract performance or legitimate interests.
4. Payments and Billing
Payments for paid Once UI products or subscriptions are processed by
Once UI does not store or have access to your full payment information (such as credit card numbers). Payment providers process this data in accordance with their own privacy policies and applicable regulations.
5. Data Sharing and Subprocessors
We do not sell your personal data.
We may share limited data with trusted service providers strictly as necessary to operate the Service, including:
Hosting and infrastructure providers
Database and authentication services
Payment processors
These providers are contractually obligated to protect your data and process it only for the purposes specified by Once UI.
6. Open-Source and Public Repositories
Some Once UI products are open-source and hosted on public platforms such as GitHub.
Any personal data you voluntarily include in public repositories, issues, pull requests, or discussions is publicly accessible and not subject to this Privacy Policy. Please avoid sharing sensitive personal information in public spaces.
7. Data Retention
We retain personal data only for as long as necessary to:
Provide the Service
Fulfil contractual obligations
Comply with legal requirements
If you wish to delete your account or request deletion of your personal data, you may contact us at
Once UI operates internationally. Your data may be processed in countries outside your country of residence.
Where required, we implement appropriate safeguards to ensure compliance with applicable data protection laws, including GDPR and other relevant regulations.
9. Your Rights
Depending on your location, you may have the right to:
We implement reasonable technical and organisational measures to protect personal data against unauthorised access, loss, misuse, or alteration.
However, no system is completely secure, and we cannot guarantee absolute security.
11. Cookies
Once UI does not use tracking or advertising cookies.
Only essential cookies may be used where strictly necessary for authentication or core functionality.
12. Changes to this Privacy Policy
We may update this Privacy Policy from time to time. The "updated" date at the top reflects the most recent version.
Continued use of the Service after changes become effective constitutes acceptance of the updated Privacy Policy.
13. Contact
If you have questions about this Privacy Policy or how your personal data is handled, contact us at