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Privacy Policy

Last updated: December 1, 2025

1. Data Controller

• Identity: Jaume Sampol Alcover
• Email: main@mainlab.es
• Website: https://mainlab.es

2. Data We Collect

The information we may collect depends on the service you use:

2.1. mainlab.es (Main Website)

Data	Purpose	Legal Basis
Language preference	Remember your preferred language	Legitimate interest
Theme preference (light/dark)	Remember your visual preference	Legitimate interest
Email (if you contact us)	Respond to your inquiry	Consent

2.2. MergeExcel (mergeexcel.es)

Data	Purpose	Legal Basis
Theme preference (light/dark)	Remember your visual preference	Legitimate interest
Excel files	NOT COLLECTED - 100% local processing	N/A

2.3. Don't Be Influenced (YouTube Analyzer)

Data	Purpose	Legal Basis
Language preference	Remember your preferred language	Legitimate interest
YouTube video URLs	Analyze comments from the requested video	Consent (by using the service)
Public YouTube comments	AI processing for sentiment analysis	Legitimate interest (public data)

3. Third-Party Services

We use the following third-party services:

3.1. Don't Be Influenced

• YouTube Data API (Google): To obtain public video comments
• Google Gemini AI: For sentiment analysis and text processing

These services are subject to Google's privacy policies. Use of these services may involve international data transfers to Google servers located outside the European Economic Area, under appropriate safeguards established by Google.

3.2. General Services

• Cloudflare: CDN and security protection
• Google Fonts: Web fonts (on some pages)

4. Data Storage

4.1. Local Storage (localStorage)

We use your browser's local storage (localStorage) to save:

• Language preference
• Visual theme preference (light/dark)

This data is stored only on your device and is never sent to our servers. You can delete it by clearing your browser's browsing data.

4.2. Server

• mainlab.es / MergeExcel: We do not store personal data on server
• Don't Be Influenced: Analyzed URLs may be temporarily cached to improve performance. Analyses are not associated with identifiable users.

5. Retention Period

• Local preferences: Until you delete them from your browser
• Analysis cache: Maximum 24 hours
• Contact emails: As long as necessary to resolve the inquiry

6. Your Rights

Under the General Data Protection Regulation (GDPR), you have the right to:

• Access: Request information about data we have about you
• Rectification: Correct inaccurate data
• Erasure: Request deletion of your data ("right to be forgotten")
• Restriction: Restrict processing of your data
• Portability: Receive your data in structured format
• Object: Object to processing of your data

To exercise these rights, contact us at: main@mainlab.es

You also have the right to lodge a complaint with the Spanish Data Protection Agency (AEPD): www.aepd.es

7. Security

We implement technical and organizational measures to protect your data:

• Encrypted connections via HTTPS/TLS
• Local processing when possible (MergeExcel)
• Restricted access to systems
• Regular security updates

8. Children

Our services are not directed at children under 14 years of age. We do not knowingly collect information from minors. If you are a parent/guardian and believe your child has provided us with personal information, please contact us.

9. Changes to this Policy

We may update this privacy policy occasionally. We will notify you of significant changes by posting the new policy on this page with a revised update date.

10. Contact

For any questions about this Privacy Policy or the processing of your data:

• Email: main@mainlab.es