Terms of Service

What Chord Lens is

Chord Lens is run by Freedom! Family Limited, Hong Kong ("we", "us"). It comes as a Chrome extension that works on YouTube videos, and as a web Studio, a Mac app that shows the Studio in its own window, and the Studio installed on your phone's home screen, which take a link to a video or an audio file you upload. Together these are "Chord Lens".

When you give Chord Lens audio, by a link to a video or by uploading a file, our server analyses it to work out its chords, key and tempo, and makes a chart. Lyrics and some song information come from third-party services. Splitting a song into stems, and changing its key or tempo, happen on your own device. Chord Lens is an independent project, not affiliated with any video platform.

Account and acceptable use

You sign in with a Google account. The extension works without signing in; the Studio needs it. You must be at least 13 to have an account, and you are responsible for what happens under your sign-in. Please don't:

• use Chord Lens to infringe anyone's rights, including by redistributing copyrighted content;
• scrape it, copy or reverse engineer its code, or try to get around its plan limits, rate limits or other limits, online or offline;
• interfere with, overload or attack the service, or try to reach other people's data;
• use Chord Lens, or anything it makes, to train or build an AI or machine-learning model;
• use it in a way that breaks the law, or the terms of the services it works with.

Copyright and your responsibility

You alone are responsible for having the legal right to process any audio you give Chord Lens, whether by link or by file upload. By using the service you confirm that:

• you own the rights to the audio, or
• you hold a licence that permits this kind of personal processing, or
• your use qualifies as fair use, fair dealing, or an equivalent exception under the law that applies to you.

Before you split a song or get its chords, the Studio asks you to tick: "I confirm that I own or have obtained all necessary rights to analyze and separate the selected audio, and I agree to the Terms and Privacy Policy." Ticking it is the same promise as the list above, made for that song.

Chord Lens is for personal, non-commercial practice and learning. Stems you download (Premium as MP3, Pro as WAV) are for your own personal study. You agree not to redistribute separated stems, or to use them to compete with the original rights-holders' business, and not to use them to make a recording or cover you release. Using Chord Lens gives you no rights in the songs themselves: those stay with their owners.

Some content comes from others. Videos, thumbnails and titles belong to the video platforms and their owners, and lyrics and some song information come from third-party services. We don't control that content and aren't responsible for it.

Licences

What you let us do. When you give Chord Lens audio, you let us process it only to provide Chord Lens to you: to analyse it, make its chart and send the result to your device. We don't use your audio to train AI models, and our server doesn't keep it once the chart is made. A chart made from a link is kept with that video, and anyone who opens the same video sees the same chart. A chart made from an uploaded file is kept on your device, not on our server.

What we let you do. As long as you follow these terms, you may use Chord Lens, and the charts, stems and downloads it makes, for your own personal, non-commercial practice and study. This permission is personal to you: you can't sell, share or transfer it, and it ends if your account is closed. Chord Lens itself, its code, design and name, belongs to us or our licensors.

Feedback. If you send us ideas or feedback, we may use them freely to improve Chord Lens, without owing you anything.

Offline and saved songs

The Mac app and the Studio installed on your phone can keep songs on your device so you can practise without a connection: a song's chart, its audio and stems, and your sections, loops and mix. Which songs can be kept depends on your plan and where the song came from. What you keep stays on that device until you remove it.

• Your responsibility. The rights promise above covers everything you keep offline. Kept songs are for your own practice on your own devices.
• Plan limits. Offline, Chord Lens keeps to your plan's limits. Once back online, the app reports what you did offline, such as songs you played and any splits, so splits count toward your plan and songs show in your History.
• Misuse. If offline use is used to get around plan limits, we may turn offline off for that account.

Files on your device can be lost if the device fails, the app is removed or your browser's data is cleared. Keep your own copies of anything that matters to you.

Takedown notices and repeat infringement

If you believe something on Chord Lens infringes your copyright, email [email protected] with the subject "Takedown notice" and include:

• your name, address, phone number and email address;
• the work you say is infringed;
• what on Chord Lens infringes it, and where it is (a link or the address of the page);
• a statement that you believe in good faith the use is not authorised by the owner, their agent or the law;
• a statement that your notice is accurate and that you are the owner, or are authorised to act for the owner;
• your signature, on paper or electronic.

We'll review it and, if it is valid, remove or disable access to the content. We may share the notice with the person it concerns. If something of yours was removed and you believe that was a mistake, reply to our message with your reasons and we'll look again. We close the accounts of people who infringe repeatedly or seriously.

Pricing, payments and refunds

Chord Lens has a free plan and two paid plans, Premium and Pro. The plans page shows what each one includes, its limits and its price. The free plan has some limits, for example three saved loops per song in the Studio, and uploads of up to 50 MB. Our server also limits how many requests it answers in a given time. We may change these limits.

A paid plan is a subscription, billed monthly or yearly in advance. You are shown the price, and any tax that applies, before you pay. It renews at the end of each period until you cancel. Payments are handled by Stripe, and we never see or store your card number.

You can cancel at any time under Manage plan on the plans page. Chord Lens does not give refunds. The only way to stop paying is to cancel. If you cancel part way through a billing period, you keep your plan for the rest of it, and the days left are not refunded. In the rare case we refund a payment by hand, your plan ends at once and the subscription is cancelled.

If a renewal payment fails, you keep your plan for seven days while the payment is retried. After that your account goes back to the free plan's limits until a payment goes through. If you subscribed at a launch price, you keep that price for as long as that subscription runs; changing to another plan or billing period moves you to its regular price.

Data we store

We keep what we need to run Chord Lens: your account, your plan and payment records, your chart history and activity, and, if offline backup is on for your account, the edits you made offline. Stems and song audio stay on your device, not on our server. Our Privacy Policy says what we collect, why, how long we keep it and who receives it.

Disclaimers

Chord Lens works out chords, keys, tempos and stems automatically, and it gets them wrong sometimes. It is a practice tool, not a substitute for a teacher. It is provided "as is" and "as available". To the extent the law allows, we give no warranties of any kind. We don't promise it will always be available, work offline, or be free of errors, or that anything saved on your device can be recovered. We may change, pause or stop any part of it.

Nothing in these terms limits rights you have under the law that cannot be limited.

Limitation of liability

To the extent the law allows, we are not liable for any indirect or consequential loss, lost profits, or loss of data, arising from your use of Chord Lens. Our total liability for all claims is limited to the greater of what you paid us in the 12 months before the claim, or USD 50.

Indemnity

You agree to cover our reasonable costs and losses, including legal fees, from any claim against us that arises from audio you give Chord Lens, how you use what it makes, or your breach of these terms or of anyone's rights.

Termination

You can stop using Chord Lens at any time. To delete your account and data, email [email protected] from the address on your account, and we'll respond.

We may suspend or close an account that breaks these terms, infringes repeatedly, or puts the service or other people at risk. If we close an account for breaking these terms, its plan ends without a refund, and you may not open a new account to get around the closure. When an account closes, your permission to use Chord Lens ends.

Governing law

These terms are governed by the laws of Hong Kong, without overriding any mandatory consumer protection that applies to you where you live. Disputes go to the courts of Hong Kong, again without overriding those protections. If any part of these terms can't be enforced, the rest still applies.

Changes to these terms

If these terms change, this page changes with them and the date at the top is updated. If you keep using Chord Lens after a change, the new terms apply.

Contact

Chord Lens is run by Freedom! Family Limited, Hong Kong.