Privacy Policy

Last updated: June 5, 2026

        TL;DR: OPC-UA Explorer is a native macOS app. It does not collect, transmit, or store any personal data. All OPC UA communication happens on your local network. No analytics, no tracking, no phone-home.
      

What OPC-UA Explorer Does

OPC-UA Explorer is a native macOS application for OPC UA client and server communication. It operates as an OPC UA client to browse server namespaces, read and write node attributes, and monitor subscriptions, or as an OPC UA server to simulate devices. It runs entirely on your Mac.

Data Collection

OPC-UA Explorer does not collect, transmit, or store any personal data. Specifically:

No OPC UA data leaves your Mac. All node values, subscription notifications, and communication logs exist only in the app's memory and your local storage.
No server information is collected. Endpoint URLs, security configurations, and certificate data entered in the app are stored locally for your convenience and never sent anywhere.
No usage analytics. The app does not include any analytics SDK, tracking pixels, or telemetry. We do not know how you use the app.
No crash reporting. The app does not send crash reports automatically. If you report a bug, you choose what information to share.

Network Communication

The app makes network connections only to the OPC UA servers you explicitly configure:

OPC UA Client: Connects to the endpoint URL you specify to browse namespaces, read/write attributes, and create subscriptions
OPC UA Server: Listens on the port you configure for incoming client connections, local only by default
License activation: If you purchased via Polar.sh, the app contacts dl-opcua-explorer.voltrus.id to validate your license key. This sends only your license key and a device identifier, no other data.

Certificate Storage

The app stores X.509 certificates locally on your Mac for OPC UA security:

Your application instance certificate and private key: stored in the app's data directory
Trusted server certificates: stored in the app's trust list directory
Rejected certificates: stored in the app's reject list directory

All certificate data remains on your Mac and is never transmitted. You can delete all certificates by removing the app's data directory.

Local Storage

The app stores the following data locally on your Mac:

Connection profiles (endpoint URLs, security mode, user identity): stored in app preferences
X.509 certificates and trust lists: stored in app data directory
License activation data: stored in macOS Keychain
Communication logs: stored in memory only, cleared when the app closes

All local data can be deleted by removing the app. No residual data is left on your Mac after deletion.

License Purchase

Licenses are processed through Polar.sh. We receive only your email address and purchase details. We do not receive or store payment card information. License keys are managed by Polar.sh.

Children's Privacy

OPC-UA Explorer is an industrial automation tool. It is not directed at children under 13. We do not knowingly collect information from children.

Cookies and Analytics

This product page (voltrus.id/opcua-explorer/) counts page views and clicks with One Dollar Stats and RevKlik. Neither sets cookies. RevKlik stores a random visitor ID in your browser; the Voltrus privacy page lists what it records. The app itself contains zero analytics.

Third-Party Services

Polar.sh: Payment processing and license key management. Their privacy policy applies to purchase data.
Cloudflare: Hosts the license validation and update server. No personal data is stored on Cloudflare beyond temporary request logs.

Data Retention

We retain your email address (from Polar.sh purchases) for as long as necessary to provide license support. We do not maintain any database of users, servers, or usage patterns. You can request deletion of your purchase data by emailing us.

Your Rights

Depending on your jurisdiction, you may have the right to:

Request access to the personal data we hold about you
Request deletion of your personal data
Object to processing of your personal data
Request a copy of your data in a portable format

Changes to This Policy

We may update this policy from time to time. Changes will be posted on this page with an updated revision date. Continued use of the app after changes constitutes acceptance.

Contact

For privacy-related questions or data requests, contact [email protected].