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Privacy Policy

Last updated: May 15, 2026

1. Introduction

Simple Invoice Generator ("we", "us", or "our"), operated by Stefan Marković in Serbia, is committed to protecting your personal information. This Privacy Policy explains how we collect, use, and safeguard your data when you use our Service at invoicegenapp.com.

By using the Service, you agree to the collection and use of information as described in this policy.

2. Data We Collect

Account Information: When you register, we collect your name, email address, and profile picture (if signing in via Google or GitHub).

Invoice Data: We store the invoice content you create, including company names, addresses, line items, and amounts. This data is stored in Google Firebase Firestore.

Payment Information: Subscription payments are processed by PayPal. We do not store your credit card or bank account details. We store your PayPal subscription ID to manage your plan status.

Usage Data: We may collect anonymous usage data such as pages visited and features used to improve the Service. No personally identifiable information is included in this data.

Technical Data: Firebase automatically collects certain technical data including IP addresses, browser type, and device information for security and performance purposes.

3. How We Use Your Data

We use your data to:

  • Provide and operate the Service
  • Manage your account and subscription
  • Send transactional emails (invoices, account notifications)
  • Improve and develop the Service
  • Comply with legal obligations
  • Prevent fraud and ensure security

We do not sell your personal data to third parties. We do not use your invoice data for advertising purposes.

4. Legal Basis for Processing (GDPR)

For users in the European Union and Serbia, we process your data on the following legal bases:

  • Contract: Processing necessary to provide the Service you signed up for
  • Legitimate interests: Improving the Service and preventing fraud
  • Legal obligation: Complying with applicable laws
  • Consent: Where you have given explicit consent (e.g. marketing emails)

5. Third-Party Services

We use the following third-party services to operate the Service:

  • Google Firebase — Authentication, database storage, and hosting. Privacy policy: firebase.google.com/support/privacy
  • PayPal — Payment processing. Privacy policy: paypal.com/privacy
  • SendGrid (Twilio) — Email delivery. Privacy policy: sendgrid.com/policies/privacy

Each of these services has its own privacy policy and data practices. We recommend reviewing their policies.

6. Data Storage and Security

Your data is stored on Google Firebase servers, which are located in the United States. Google Firebase is certified under various security standards including ISO 27001 and SOC 2/3.

We implement appropriate technical and organizational measures to protect your personal data, including encrypted connections (HTTPS), access controls, and secure authentication.

While we take security seriously, no method of electronic storage is 100% secure. We cannot guarantee absolute security of your data.

7. Data Retention

We retain your personal data for as long as your account is active. If you delete your account, we will delete your personal data within 30 days, except where we are required to retain it by law.

Invoice data is retained as long as your account exists. You may delete individual invoices at any time from within the Service.

8. Your Rights (GDPR)

As a user, you have the following rights regarding your personal data:

  • Access: Request a copy of the personal data we hold about you
  • Rectification: Request correction of inaccurate data
  • Erasure: Request deletion of your personal data ("right to be forgotten")
  • Portability: Request your data in a machine-readable format
  • Restriction: Request that we limit how we process your data
  • Objection: Object to certain types of processing
  • Withdraw consent: Where processing is based on consent

To exercise any of these rights, please contact us using the details in Section 11.

9. Cookies

The Service uses cookies and similar technologies for:

  • Authentication: Firebase uses cookies to keep you logged in
  • Preferences: We store your theme preference (light/dark) in your browser's local storage
  • Security: Firebase uses cookies to prevent fraudulent activity

These cookies are essential for the Service to function. By using the Service, you consent to the use of these cookies.

10. Children's Privacy

The Service is not directed at children under 16 years of age. We do not knowingly collect personal data from children under 16. If you believe we have collected data from a child under 16, please contact us immediately.

11. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes by email or by displaying a notice in the Service. The date at the top of this policy indicates when it was last updated.

12. Contact and Complaints

For any questions, requests, or complaints regarding this Privacy Policy or your personal data, please contact us:

Simple Invoice Generator
Stefan Marković
Serbia
hello@invoicegenapp.com

If you are located in the EU and believe we have violated your privacy rights, you have the right to lodge a complaint with your local data protection authority.

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