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About

Thanks for using Transpose!
Made with ❤ in The Netherlands. For musicians, by musicians.
If you like it please leave your message here.

Our Mission: Encouraging Music Making

We believe that making music is for everyone. That’s why the core of Transpose is a powerful, free tool for your daily practice sessions. It is our contribution to the music community, to help as many people as possible grow and enjoy playing.

Privacy Policy

Last updated: October 22, 2025

We respect your privacy

We don’t serve ads, sell your data, or do anything sneaky.
Most settings stay on your device. If you sign in for Pro features, we store your data securely in Firebase until you delete it.
Your email will never be sold or shared, and we’ll only send newsletters if you’ve given us permission.

Summary of our privacy commitments

This developer declares that your data is:

  • Not sold to third parties, outside of approved use cases.
  • Not used or transferred for purposes unrelated to the extension’s core functionality.
  • Not used or transferred to determine creditworthiness or for lending purposes.

The extension complies with the Google Developer Program Policies and Chrome Web Store Terms of Service.
We do not sign separate privacy agreements for end users. Privacy is secured by this policy, Chrome Web Store rules, and applicable law.

Data we collect

Free version (no sign-in)

  • No personal data is collected.
  • No browsing history, audio, or video is recorded or stored.
  • Settings and history are stored locally or in your personal synced browser settings using Chrome’s storage API.
  • Aggregated usage statistics — collected via Google Analytics with IP anonymization; no personal identifiers, browsing history, or URLs are sent.

Pro version (Google sign-in required)

  • Account information - Google account ID, display name, and email address (via Firebase Authentication). Stored in Firebase until you delete it.
  • Extension settings and history - stored locally or in your account for sync across devices.
  • Marketing consent - if you opt in, your email address is used for newsletters only. You can unsubscribe at any time.

When you contact us for support

  • When you submit a support request via our contact form or by email, we collect your name, email address, and any other information you provide, such as your operating system, browser version, and the specific issue you are facing.
  • This information is used solely for the purpose of providing you with support, troubleshooting your issue, and improving our service.
  • Support correspondence is retained to maintain a history of your support requests. You can request the deletion of your support data by contacting us at privacy@transpose.video.

Data Processing and Compliance

Transpose (operated by Tune73 B.V.) is an independent data controller under GDPR. We don’t process data on behalf of schools or other organizations and therefore don’t sign individual Data Processing Agreements.

For Pro accounts, limited personal data (like email and subscription info) is processed for login and payment. This happens under GDPR-compliant agreements with our subprocessors, such as Firebase (Google) and Paddle.

Payments & communications

Pro subscriptions are processed by Paddle.com as Merchant of Record. Paddle handles VAT, invoicing, and payment security under their own Privacy Policy.
Paddle may send you subscription-related emails such as receipts, renewal reminders, failed payment notices, and recovery prompts, as part of their Retain functionality. These communications are transactional, not marketing.

Permissions we request

By default, the extension does not require any browser permissions and works out of the box for YouTube.

Permissions are requested only when required for functionality:

  • ActiveTab – connect to and control media playback on the active tab.
  • Tabs – retrieve URLs and communicate with inactive tabs.
  • Storage – save settings and history locally or in your account.
  • Sidepanel – open the Transpose Pro interface next to the site content.
  • Host permissions (optional) – for specific domains (e.g., Spotify, Deezer, embedded YouTube) to connect to their media players.
  • TabCapture (optional) – capture audio for pitch-shifting when no media element is found.

Cookies

  • Extension: Does not set or use cookies.
  • Website (transpose.video): Uses cookies only for Google Analytics with IP anonymization, for aggregated usage statistics.

Third-party services

We are not affiliated with or endorsed by Google, YouTube, Spotify, Deezer, or any other third party whose services may be accessed through the extension.

Your rights (GDPR)

If you are in the EU/EEA, you have the right to:

  • Access, correct, or delete your personal data.
  • Restrict or object to its processing.
  • Request data portability.
  • File a complaint with your Data Protection Authority.

To request data deletion or changes, email privacy@transpose.video.

Terms of Service

Last updated: October 10, 2025

These Terms of Service (“Terms”) govern your use of the Transpose Video browser extension and the website transpose.video (together the “Service”), provided by Tune73 B.V., trading as Transpose Video (“we”, “us”, “our”).

By installing or using the Service, you agree to these Terms. If you do not agree, do not use the Service.

1. Service Description

Transpose Video lets you adjust pitch, playback speed, and loop sections of online videos and audio in real time.
The free version works out of the box for YouTube. Certain websites, including embedded YouTube videos, Spotify, Deezer, and other dynamic media platforms, require optional host permissions to connect to the HTML media element. If no media element can be found, TabCapture (audio only) may be used as a fallback for pitch shifting.
Pro features require sign-in with Google via Firebase Authentication and may require an active subscription.

1.1 Platform availability and compatibility.

The Service relies on third‑party sites and players that may change their code, policies, or access rules at any time. We do not guarantee availability or continued compatibility with any specific platform (e.g., YouTube, Spotify, Deezer, Apple Music, Vimeo, etc.). If a platform opts out, blocks integrations, or it becomes technically impossible to connect, some or all features may stop working without notice. Device, browser, or OS limitations may also prevent the Service from functioning on certain setups.

2. Eligibility

You must be at least 16 years old or have parental consent to use the Service.

3. Accounts & Authentication

Free features do not require sign-in.
Pro features require login with Google. We store your user ID, preferences, and history in Firebase until you delete them.
Your Google account information is processed according to Google’s Privacy Policy.

4. Payments & Subscriptions

Payments for Pro subscriptions are processed by Paddle.com as Merchant of Record (handles VAT, invoicing, and payment security).
Subscriptions auto-renew unless cancelled.

Refund Policy: All sales are final. No refunds except where required by applicable law. No refunds are provided when third‑party platforms restrict, block, or remove the technical capability required for the Service, or when the Service cannot function due to technical limitations or incompatibilities on a user’s device, browser, or operating system (except where required by applicable law).

5. Browser Permissions

The Extension may request:

  • ActiveTab – Control media playback on the current tab.
  • Tabs – Retrieve URLs and communicate with inactive tabs.
  • Storage – Store settings and history locally or in your account.
  • Sidepanel – Open the Transpose Pro interface next to the site content.
  • Host permissions (optional) – For specific domains (e.g., Spotify, Deezer, YouTube embeds) to allow connecting to media players.
  • TabCapture (optional) – Capture and process audio when no media element is detected.

Permissions are requested only when required for functionality.

6. Data Usage & Analytics

We use Google Analytics to collect aggregated, non-identifiable usage data for performance monitoring and feature improvement.
No browsing history or personal identifiers are sent. IP anonymization is enabled.

7. License

A Pro subscription grants you a limited, non-exclusive, non-transferable, and revocable license for personal use by a single individual. You agree not to share your account or subscription with others.

8. Acceptable Use

You may not:

  • Use the Service to infringe copyrights or violate laws.
  • Reverse-engineer or interfere with the Service.

9. Disclaimer of Warranties

The Service is provided “as is” and “as available” without warranties of any kind.

10. Limitation of Liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, or consequential damages, including data loss.

11. Requests for Privacy Agreements

We do not sign separate privacy agreements for end users. Privacy is already governed by this Policy, the Chrome Web Store policies, and applicable law.

12. Governing Law

These Terms are governed by the laws applicable in your country of residence, with EU/EEA users covered by GDPR.

13. Contact

Email: info@transpose.video

Licenses

Summary of 3rd party software used in this application:

Bootstrap v4.1.3 (http://getbootstrap.com/)
Copyright Twitter, Inc.
Licensed under the MIT license
Angular
Copyright (c) Google LLC.
Licensed under the MIT License.
lodash
Copyright JS Foundation and other contributors
Licensed under the MIT license
RxJS
Copyright (c) 2015-2020 Google, Inc., Netflix, Inc., Microsoft Corp. 
and contributors
Licensed under the Apache License 2.0
tslib
Copyright (c) Microsoft Corporation.
Licensed under the 0BSD license
Jungle
Copyright 2012, Google Inc.
Licensed under the BSD 3-Clause license
SoundTouch JS audio processing library
Copyright (c) Olli Parviainen, Ryan Berdeen
Licensed under the GNU LGPL v2.1
Rubber Band Library
Copyright (c) 2007-2020 Chris Cannam and Breakfast Quay
Licensed under the GNU GPL v2 or later