Last updated: March 2026
DeltaX Studio (“we”, “us”, “our”) operates the website deltax.gr and the DeltaX Studio application available on Google Play. This Privacy Policy explains how we collect, use, and protect your information when you use our audio tools and services.
1. Information We Collect
Account Information: When you create an account or subscribe to DeltaX Pro, we collect your email address and, if provided, your name. This information is necessary to manage your account and provide access to Pro features.
Payment Information: Payments are processed exclusively through Stripe, a third-party payment processor. We do not store your credit card number, bank details, or any financial information on our servers. Stripe handles all payment data in accordance with their own privacy policy and PCI-DSS compliance standards.
Google Sign-In: If you choose to sign in with Google, we receive your email address and display name from Google. We do not access your Google contacts, files, or any other Google account data.
2. How Your Audio and Video Files Are Handled
Your files and your privacy are extremely important to us. Different tools in DeltaX Studio handle files differently:
On-Device Processing (your files never leave your device):
- DeltaX Editor – All audio editing, recording, cutting, and mixing is performed entirely in your browser using the Web Audio API. Your audio files are never uploaded to our servers.
- DeltaX Voicer – All voice enhancement, AI Magic analysis, noise reduction, de-reverb, EQ, dynamics processing, and export happen entirely on your device. No audio data is transmitted to any server.
- DeltaX Effector – All audio effects (reverb, delay, chorus, pitch shift, etc.) are applied locally in your browser. Your audio stays on your device.
- DeltaX Converter – All format conversions (MP3, WAV, FLAC, OGG, AAC, M4A) are performed on your device using browser-based encoding. No files are uploaded.
Server-Side Processing (temporary upload required):
- DeltaX Video ReSound – When you export a processed video, the original video file and the mastered audio are temporarily uploaded to our server for remuxing (combining the original video with the new audio track). The processed file is made available for you to download. All uploaded files and processed outputs are automatically deleted from our server within one hour of processing. We do not retain, review, share, or use your video or audio content for any purpose other than completing the requested processing.
3. How We Use Your Information
We use the information we collect for the following purposes:
- To provide and maintain your account and access to DeltaX Studio tools
- To process your Pro subscription through Stripe
- To communicate with you regarding your account, service updates, or support requests
- To improve our tools and user experience
We do not sell, rent, or share your personal information with third parties for marketing purposes.
4. Analytics
We may use standard web analytics tools (such as Google Analytics) to collect anonymized usage data, including pages visited, time spent on the site, browser type, and device information. This data helps us understand how our tools are used and improve the overall experience. No personally identifiable audio or video content is collected through analytics.
5. Cookies
We use cookies for the following purposes:
- Essential cookies: To maintain your login session and remember your authentication status
- Preference cookies: To remember your settings and preferences within the tools
- Analytics cookies: To collect anonymized usage statistics (if analytics are enabled)
You can control cookie settings through your browser. Disabling essential cookies may affect your ability to use account features.
6. Data Security
We take the security of your data seriously:
- All data transmitted between your device and our servers is encrypted using HTTPS/TLS
- User passwords are securely hashed and never stored in plain text
- Video ReSound temporary files are stored in a protected directory and automatically purged within one hour
- We enforce single-device session management for account security
7. Third-Party Services
We use the following third-party services:
- Stripe (stripe.com/privacy) – Payment processing for Pro subscriptions
- Google Sign-In (Google Privacy Policy) – Optional authentication method
- Google Analytics (Google Privacy Policy) – Anonymized usage analytics (if enabled)
Each third-party service operates under its own privacy policy. We encourage you to review their policies.
8. Data Retention
- Account data (email, name) is retained for as long as your account is active
- Audio files processed by Editor, Voicer, Effector, and Converter are never stored on our servers – they exist only on your device
- Video ReSound files are temporarily stored for processing and automatically deleted within one hour
- Payment records are managed by Stripe in accordance with legal and financial requirements
9. Your Rights
You have the right to:
- Access the personal data we hold about you
- Correct any inaccurate information in your account
- Delete your account and all associated data by contacting us or through your account settings
- Export your personal data in a machine-readable format
- Withdraw consent for optional data processing at any time
If you are located in the European Economic Area (EEA), you have additional rights under the General Data Protection Regulation (GDPR), including the right to lodge a complaint with your local data protection authority.
10. Children’s Privacy
DeltaX Studio is not directed at children under the age of 16. We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us and we will promptly delete it.
11. Changes to This Policy
We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated “Last updated” date. We encourage you to review this page periodically. Continued use of DeltaX Studio after changes constitutes acceptance of the updated policy.
12. Contact Us
If you have any questions about this Privacy Policy, your data, or wish to exercise your rights, please contact us: