Legal
Privacy Policy
Last updated: March 20, 2026
1. Introduction
Plexon AI ("we", "our", "us") is operated by Hellenic Development. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our desktop application and website (collectively, the "Service"). Please read this policy carefully. By accessing or using the Service, you acknowledge that you have read and understood this Privacy Policy.
2. Information We Collect
Account Information
When you create an account or sign in using Google OAuth, we receive your name, email address, and profile picture from Google. This information is used solely to identify your account and provide the Service.
Local Data
All your working data (sessions, conversation history, API keys, code files, and preferences) is stored exclusively on your local machine, encrypted with AES-256-GCM. We do not have access to this data.
Usage Analytics
We may collect anonymous, aggregated usage metrics such as feature usage counts and error rates to improve the product. No personally identifiable information, code content, or conversation data is included in these analytics.
Install Count
The desktop app counts installs so we know how many people run Plexon and on which operating system. A random number is created on your computer and sent when it is created, once a day while the app runs, and when Plexon is uninstalled. It carries your operating system and app version and nothing else: no name, email, account, IP address, file names, folder paths, or anything from your conversations. It is never linked to your account, and it is not derived from anything about your machine, so deleting the file that holds it (install-id.json in your Plexon folder) makes your computer a new install with no way for us to connect the two. Turn it off in Settings, under Advanced, in the Privacy section. Turning it off sends one last message so your copy stops being counted, and then nothing further.
3. Google User Data
Our use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. We only request the minimum scopes necessary for authentication (email and profile). We do not use Google user data for advertising. We do not share Google user data with third parties except as necessary to provide and improve the Service, comply with applicable law, or as part of a merger, acquisition, or sale of assets. We do not use Google user data for purposes unrelated to the core functionality of Plexon AI.
4. How We Use Your Information
We use the information we collect to: create and manage your account; provide, maintain, and improve the Service; communicate with you about the Service, including support requests; send you technical notices and security alerts; comply with legal obligations; and protect against fraudulent, unauthorized, or illegal activity.
5. Data Sharing & Disclosure
We do not sell your personal information. We may share your information only in the following circumstances: with AI providers (Anthropic, OpenAI, Google, etc.) when you use their services through Plexon AI, where your prompts are sent according to their respective privacy policies; with service providers who assist us in operating the Service (e.g., hosting, analytics), under strict data processing agreements; to comply with applicable laws, regulations, or legal processes; and to protect the rights, property, or safety of Hellenic Development, our users, or the public.
6. Data Retention
Account information is retained for as long as your account remains active. Our server is 100% stateless: it maintains zero state between requests (no sessions, no caches, no logs). All working data (code, conversations, API keys) remains on your local machine and is never transmitted to or stored on our servers beyond the duration of a single request.
7. Data Security
We implement industry-standard security measures to protect your data. API keys are AES-256-GCM encrypted during transmission. The server decrypts them on-demand for AI provider requests and never persists them. Our stateless architecture means server-side data breaches of your working data are architecturally impossible. However, no method of transmission over the internet is 100% secure, and we cannot guarantee absolute security.
8. Your Rights & Choices
Depending on your location, you may have the following rights regarding your personal data: the right to access the personal data we hold about you; the right to request correction of inaccurate data; the right to request deletion of your account and associated data; the right to data portability; and the right to withdraw consent at any time. Since the vast majority of your data resides locally on your machine, you can manage, export, or delete it at any time. To exercise rights regarding your account data, contact us at contact@hellenic.dev.
9. Cookies & Tracking
Our website uses essential cookies required for authentication and session management. We do not use advertising cookies or third-party tracking cookies. You can configure your browser to refuse cookies, but some features of the Service may not function properly without them.
10. Children's Privacy
The Service is not intended for children under 13 years of age (or the applicable age of consent in your jurisdiction). We do not knowingly collect personal information from children. If we learn that we have collected information from a child, we will delete that information promptly. If you believe we have inadvertently collected data from a child, please contact us at contact@hellenic.dev.
11. International Data Transfers
Your information may be processed in countries other than your country of residence. We ensure that appropriate safeguards are in place to protect your data in accordance with applicable data protection laws.
12. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of material changes by posting the new policy on this page and updating the "Last updated" date. Your continued use of the Service after changes constitutes acceptance of the updated policy.
13. Contact Us
If you have questions about this Privacy Policy or wish to exercise your data rights, contact us at contact@hellenic.dev.