Terms of Use

Musami · Effective November 12, 2026 · Version 2026-11-12

These terms are an agreement between you and WavePrism Labs LLC, a California limited liability company (2108 N St, Ste C, Sacramento, CA 95816, support@waveprismlabs.com, (415) 907-0709) ("we", "us"), for the Musami app on iPhone, the website at musami.app, and the service behind them (together, "the service").

On iPhone, your license to use the app comes from Apple's Standard Licensed Application End User License Agreement (the "Standard EULA"). These terms add to it. If they conflict about the app's license, the Standard EULA wins.

Our Privacy Policy explains what we do with your data. Subscriptions are summarized in our Subscription terms.

1. Who can use the service

• Anyone can use the lessons.
• Accounts are for people 16 and over. Under 16, the app works without one: your progress stays on your device and nothing syncs (see the Privacy Policy, "Children and age").
• If you are under 18, or under the age of majority where you live, a parent or legal guardian must agree to these terms for you and is responsible for your use of the service, including purchases made on their Apple Account.

2. The service

Musami teaches music theory in short lessons, with practice, review, and a Studio for making simple songs.

• Free: Unit 1, the first guitar module, the placement test, the daily review, the Studio and the jam room. In the iPhone app, the free plan opens up to three new lessons a day; lessons you have finished, reviews and quizzes stay open.
• Pro (a subscription in the iPhone app): the later units, the other guitar modules and the electives, with no daily limit on new lessons.

We keep improving the lessons, so content will change: we may add, rewrite, reorder or retire lessons. If a change makes Pro worse for you in more than a minor way during a period you have paid for, we will tell you in advance. You can then end your subscription within 30 days of our notice or of the change, whichever is later, and get back the unused part as section 11 describes.

3. Your account

• An account is optional. It keeps a copy of your progress so you can use it on other devices. You sign in with Apple or Google.
• Keep access to your Apple or Google account secure; anyone who can sign in to it can use your Musami account.
• You can delete your account any time in Settings › Account and data › Delete account. This deletes your synced data. It doesn't cancel an App Store subscription (see section 4).
• We may suspend or close an account that breaks these terms, after telling you why where we reasonably can.

4. Subscriptions and payment

• Pro is for people 13 and over. The app doesn't sell it to anyone we know is younger.
• Pro is sold in the iPhone app through Apple's in-app purchase. Apple takes the payment and handles the tax. In the United States and some other countries Apple acts as our agent, so we are the seller. In the EU, the UK and many other countries, Apple Distribution International Ltd. sells it to you in its own name. Apple's terms and refund policy apply to the purchase. The plans, the price in your currency and any free trial are shown before you buy and in Apple's purchase sheet.
• Subscriptions renew automatically until you cancel. Cancel any time in your iPhone's Settings › Apple Account › Subscriptions, at least 24 hours before the trial or the current period ends, or from the app: Settings › Subscription › Manage subscription.
• Refunds for App Store purchases are handled by Apple (reportaproblem.apple.com, or Settings › Subscription › Request a refund in the app).
• Price changes for existing subscribers follow Apple's process, which tells you in advance and, where required, asks for your agreement.
• The website doesn't sell anything.
• Restoring: use Restore purchases on the Pro screen or in Settings › Subscription on a device signed in to the same Apple Account.

The full details are in the Subscription terms.

5. Our content and your license to use it

The lessons, exercises, recordings, text, graphics and software are ours or our licensors'. Subject to these terms (and, on iPhone, the Standard EULA), we give you a personal, non-exclusive, non-transferable license to use them for your own learning. Please don't copy, resell or redistribute them, scrape the service, or try to get round Pro or the service's security.

The open-source software and the sounds and fonts in the app come with their own licenses, listed in Settings › Legal › Open-source licenses. Nothing in these terms limits your rights under those licenses.

6. Your songs

Songs you make in the Studio are yours. If you are signed in, you give us permission to store them and copy them to your devices, only to provide the service to you. We don't publish them, show them to others or use them for anything else. If you share an image of a song or milestone, you choose where it goes; we don't host it.

7. Acceptable use and what we store

• Don't use the service to break the law, to harm the service or other people, or to access accounts or data that aren't yours.
• Don't store anything illegal in the service, or anything that infringes someone else's rights, such as copied lyrics or recordings you have no right to use. Don't use sync as general file storage: each account holds at most 50,000 synced items and 25 MB.
• How we moderate: we don't read, scan or automatically review your songs or progress. We act only on a report of illegal content, a legal order, or a security need, and a person reviews every case.
• What we may do: in proportion to the problem, remove the item, pause your sync, or close your account. Closing an account doesn't cancel an App Store subscription, so we will remind you to cancel it. We tell you by email (if you have an account) or in the app what we did and why, unless the law stops us.
• Complaints: if you disagree with a decision, write to support@waveprismlabs.com within 6 months. A person reviews it and answers within 14 days. You can also go to court.
• Reporting illegal content: anyone can report it in the app (Settings › Legal › Report illegal content) or to support@waveprismlabs.com. Say why you believe it is illegal and where it is, give your name and email, and confirm that you are reporting in good faith. This address is also our contact point for users and for authorities, in English.

8. Apple

On iPhone, these terms also include the following:

• Acknowledgement: these terms are between you and us only, not Apple. We, not Apple, are solely responsible for the app and its content. These terms set no usage rules that conflict with the Apple Media Services Terms and Conditions.
• Scope of license: your license to the app can't be transferred, and covers use on Apple-branded products you own or control, as the Usage Rules in the Apple Media Services Terms allow, including through Family Sharing, volume purchasing and Legacy Contacts.
• Maintenance and support: we alone provide maintenance and support for the app, as these terms say or the law requires. Apple has no duty to provide any.
• Warranty: we are solely responsible for any product warranties, whether express or implied by law, to the extent they aren't effectively disclaimed. If the app fails to conform to an applicable warranty, you may notify Apple and Apple will refund the purchase price, if any. To the maximum extent permitted by applicable law, Apple has no other warranty obligation, and any other claims, losses, liabilities, damages, costs or expenses from a failure to conform to a warranty are our sole responsibility.
• Product claims: we, not Apple, are responsible for addressing any claims by you or a third party about the app or your possession and use of it, including product liability claims, claims that the app fails to conform to a legal or regulatory requirement, and claims under consumer protection, privacy or similar legislation.
• Intellectual property: if a third party claims that the app or your possession and use of it infringes their intellectual property rights, we, not Apple, are solely responsible for the investigation, defense, settlement and discharge of the claim.
• Legal compliance: you represent and warrant that you are not located in a region subject to a US Government embargo, or one the US Government has designated as "terrorist supporting", and that you are not on any US Government list of prohibited or restricted parties.
• Developer name and address: questions, complaints and claims about the app go to us: WavePrism Labs LLC, 2108 N St, Ste C, Sacramento, CA 95816, support@waveprismlabs.com, (415) 907-0709.
• Third-party terms: you must comply with the applicable third-party terms when you use the app, for example Apple's and Google's sign-in terms and your mobile data plan.
• Third-party beneficiary: Apple and its subsidiaries are third-party beneficiaries of these terms, and on your acceptance of them Apple will have the right (and will be deemed to have accepted the right) to enforce them against you as a third-party beneficiary.

9. Disclaimers

We work hard to make the lessons accurate and the service reliable. If you live in the EU, the EEA, the UK or Switzerland, you have your legal rights when digital content or services are faulty, and nothing in these terms limits them.

Everywhere else, to the extent the law allows, we provide the service "as is" and "as available", and we disclaim all implied warranties, including the implied warranties of merchantability, fitness for a particular purpose and non-infringement. We can't promise the service will always be available or free of errors.

Everywhere, nothing in these terms limits rights you have as a consumer that the law doesn't let us limit.

10. Limitation of liability

If you live in the EU, the EEA, the UK or Switzerland: we are responsible for loss you suffer that is a foreseeable result of our breach of these terms or our failure to use reasonable care and skill. We are not responsible for loss that was not foreseeable. In Germany, we are liable without limit for intent, gross negligence, injury to life, body or health, and under the Product Liability Act; for slight negligence, only for breach of essential obligations, and limited to the typical, foreseeable damage.

Everywhere else: to the extent the law allows, we aren't liable for indirect or consequential losses, or for lost data you could have kept with the export or an account, and our total liability to you is limited to the greater of what you paid for Pro in the 12 months before the event that gave rise to the claim, and USD 100.

Everywhere: nothing in these terms limits or excludes liability for death or personal injury caused by negligence, for fraud, gross negligence or willful misconduct, or for anything else the law doesn't allow us to limit or exclude.

11. Ending the agreement

You can stop using the service any time, and delete your account in the app.

If we end Pro or the service before a period you have paid for ends, for a reason other than your breach of these terms, we will:

• tell you at least 30 days before, in the app and by email if you have an account;
• stop new purchases and renewals;
• make sure you get back the unused part of what you paid, in proportion to the time left. Apple took your payment, so the refund comes through Apple: we will ask Apple to grant it and show you how to request it. If Apple declines, we will refund the unused part ourselves.

We may close an account that seriously or repeatedly breaks these terms, as section 7 describes.

12. Changes to these terms

We may change these terms for a valid reason, such as a change in the law, in the service, in Apple's rules or in how we run Musami, or to correct an error. We will post the new version with a new effective date. If a change matters to you, we will tell you in the app, and by email if you have an account, at least 30 days before it applies. If you don't agree, you can stop using the service, delete your account and cancel your subscription before it applies. If you live outside the EU, the EEA, the UK and Switzerland and keep using the service after a change takes effect, the new terms apply to you. If you live in one of those places, our notice will tell you how long you have to object and what happens if you don't. A change doesn't apply to a dispute that arose before it took effect. You can get an earlier version by writing to support@waveprismlabs.com.

13. Law and disputes

• These terms are governed by the laws of the State of California, without regard to its conflict-of-laws rules, and applicable US federal law.
• If you are a consumer, you keep the protection of the mandatory laws of the country where you live, and you may bring claims in your local courts. We will bring claims against you only in the courts where you live.
• In the United States, claims may be brought in the state or federal courts in Sacramento County, California, or in the small-claims court where you live.
• Please contact us first at support@waveprismlabs.com and give us 30 days to resolve the problem before going to court; most problems are solved quickly that way. This doesn't stop you from going to court sooner if you need to protect your rights.

14. General

• If a court finds part of these terms unenforceable, the rest stays in force.
• These terms, the Subscription terms and Apple's Standard EULA are the whole agreement between you and us about the service. If you live in the EU, the EEA, the UK or Switzerland, this doesn't limit your right to rely on what we told you before you bought.
• If we don't enforce a term right away, we can still enforce it later.
• You can't transfer these terms to someone else. We can transfer them to a company that takes over the service. We will tell you first, your rights under them stay the same, and you can end this agreement if you don't want to continue.
• Outside the EU, the EEA, the UK and Switzerland, we aren't responsible for delays or failures caused by events we can't reasonably control, such as outages at Apple or our providers.

15. Contact and legal notice

WavePrism Labs LLC, 2108 N St, Ste C, Sacramento, CA 95816 · support@waveprismlabs.com · (415) 907-0709. See also Support and contact.