Softek Solutions, Inc. ("Softek Solutions," "we," "our," or "us") operates DevDiagrams (devdiagrams.com), a web-based grammar visualization tool. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our service.

Please read this policy carefully. If you disagree with its terms, please discontinue use of the service.

Information you provide directly:

• Account information obtained through OAuth login providers (Google, Microsoft, GitHub) — including your name, email address, and profile picture where provided by the OAuth provider.
• Grammar text you submit for rendering.
• Preferences and settings you configure within the application.

Information collected automatically:

• Render history — grammar inputs you submit are stored to provide history functionality.
• Usage data — general usage patterns for the purpose of improving the service.
• Payment information — we do not store payment card details. All payment processing is handled by Stripe. We store subscription status, license keys, and transaction identifiers.

We use the information we collect to:

• Provide, operate, and maintain the DevDiagrams service.
• Process transactions and manage your subscription or license.
• Store your render history according to your account tier's retention period.
• Respond to your comments and questions.
• Send administrative information such as subscription confirmations and license keys.
• Improve and optimize the service.
• Comply with legal obligations.

We use the following third-party services:

• OAuth Providers (Google, Microsoft, GitHub) — used for authentication. Your use of these services is governed by their respective privacy policies.
• Stripe — used for payment processing. Stripe's privacy policy governs the handling of your payment information. We do not store payment card details.

Render history is retained according to your account tier:

• Free accounts — render history is retained for 30 days.
• Educational licenses — render history is retained for 6 months.
• Professional subscriptions — render history is retained for 2 years.

Account information is retained for as long as your account is active. Upon account deletion, your personal data is removed from our systems within a reasonable period, except where retention is required by law.

We implement appropriate technical and organizational measures to protect your information against unauthorized access, alteration, disclosure, or destruction. All data is transmitted over HTTPS. However, no method of transmission over the internet or electronic storage is 100% secure, and we cannot guarantee absolute security.

You have the right to:

• Access the personal information we hold about you.
• Request correction of inaccurate information.
• Request deletion of your account and associated data.
• Unlink OAuth providers from your account.

You can exercise these rights directly through your Account page, or by contacting us at the address below.

DevDiagrams is not directed to children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe we have inadvertently collected such information, please contact us immediately.

We may update this Privacy Policy from time to time. We will notify you of any significant changes by updating the effective date at the top of this page. Your continued use of the service after any changes constitutes your acceptance of the updated policy.