Privacy Policy

1. Data Controller

The data controller for personal data processing is Danilo Vaccalluzzo, reachable at the email address: info@solve4success.com

2. Data Collected

2.1 Registration data

When you create an account, we collect:

• Email registration: email address, name (optional) and password (stored exclusively in encrypted form using bcrypt hashing)
• Google registration: email address, name and profile picture provided by Google via the OAuth 2.0 protocol. We do not store your Google password.

2.2 Usage data

We automatically collect:

• Mathematical expressions and problems submitted to the solver
• Images uploaded for expression recognition (processed in real-time and not retained)
• Anonymous browsing data via Google Analytics (pages visited, session duration, device)

2.3 Payment data

For Pro subscriptions, payments are handled by Stripe. We collect and process:

• Email associated with the account and subscription
• Transaction ID and payment status (for subscription management and support)
• We do not store credit card numbers: payment data is processed directly by Stripe securely

2.4 Technical data

• Technical cookies necessary for authentication and site operation
• JWT session cookies to maintain secure access to your account

3. Purpose of Processing

We use your data to:

• Provide you access to the AI math solving service
• Manage your account and authentication
• Improve the quality and accuracy of the solver's results
• Analyze site usage to improve the user experience
• Ensure service security and prevent abuse

4. Legal Basis

Data processing is based on:

• Consent (Art. 6(1)(a) GDPR) — provided at the time of registration
• Performance of a contract (Art. 6(1)(b) GDPR) — necessary for the provision of the service
• Legitimate interest (Art. 6(1)(f) GDPR) — for the security and improvement of the service

5. Data Retention

Your account data is retained for the duration of your registration. Images uploaded for recognition are processed in real-time and are not stored on our servers. Anonymous usage logs may be retained for up to 24 months for statistical purposes.

6. Data Sharing

Your data may be shared with:

• Supabase (database hosting) — for secure storage of account data, with servers located in the European Union
• Google — for OAuth authentication (only if you choose Google login) and for Google Analytics
• Stripe — for processing Pro subscription payments. Stripe receives credit card data directly from the user and does not share it with us. Stripe servers are PCI-DSS compliant. Privacy policy: stripe.com/privacy
• Vercel — for website hosting

We do not sell, rent or share your personal data with third parties for marketing purposes.

7. Your Rights

Under EU Regulation 2016/679 (GDPR), you have the right to:

• Access — request a copy of your personal data
• Rectification — correct inaccurate or incomplete data
• Erasure — request the deletion of your data ("right to be forgotten")
• Restriction — restrict processing in certain cases
• Portability — receive your data in a structured format
• Objection — object to processing based on legitimate interest

To exercise these rights, contact us at info@solve4success.com. We will respond within 30 days of receiving your request.

8. Security

We adopt technical and organizational measures to protect your data, including:

• Password encryption using the bcrypt algorithm
• Communications secured via HTTPS/TLS
• Signed JWT session tokens with automatic expiration
• httpOnly and secure cookies for session management
• Data access limited to the data controller only

9. Cookies

The site uses the following cookies:

10. Changes to the Privacy Policy

We reserve the right to update this policy. Changes will be published on this page with an updated last modified date.

11. Contact and Complaints

For any questions about the privacy of your data, write to: info@solve4success.com

You also have the right to file a complaint with the Data Protection Authority (www.garanteprivacy.it).

12. Refund Policy

Solve4Success offers Pro subscriptions with recurring payments. Below are the conditions for requesting a refund.

12.1 Right of withdrawal (EU consumers)

If you are a consumer residing in the European Union, you have the right of withdrawal within 14 days from the subscription date, without providing any reason (Directive 2011/83/EU). To exercise the right of withdrawal, send a written communication to info@solve4success.com indicating your email address and the cancellation request.

The refund will be made within 14 days of receiving the request, using the same original payment method, unless otherwise agreed.

12.2 Refund requests beyond 14 days

Beyond the withdrawal period, we will individually evaluate refund requests for exceptional situations (e.g., double charge, persistent technical issues, purchase error). Write to info@solve4success.com describing the reason for the request. We commit to responding within 5 business days.

12.3 Subscriptions and partial refunds

Subscriptions are billed in advance (monthly or annually). In case of withdrawal or cancellation during an already paid period, no refund is issued for the portion already used. The refund, where applicable, covers only the proportional amount of the unused period.

12.4 Subscription cancellation

You can cancel automatic renewal at any time from your account settings or through the Stripe Customer Portal. Pro access remains active until the end of the already paid period.

12.5 Refund contacts

For any requests related to refunds or payment issues: info@solve4success.com