Terms of Service

Version 2026-10-29 · Effective 29 October 2026

1. Who we are and what these terms cover

Riff Killer (riffkiller.fun, the “Service”) is run by an individual who is registered in the Russian Federation as a self-employed professional (payer of the professional income tax, “НПД”) (“we”, “us”). Our full name and taxpayer number (ИНН) are printed on every receipt and are given on request. Contact: support@riffkiller.fun.

These Terms are a public offer to conclude an agreement on the terms below. You accept them when you create an account, sign in, or pay for premium. If you do not agree, please do not use the Service. Our Privacy Policy explains how we handle personal data.

2. Accounts

• You need an account to save progress across devices and to buy premium. You can sign up with email and password, a one-time email link, Google, Yandex or Patreon.
• You must be at least 16 years old, or have the consent of a parent or guardian where the law of your country requires it.
• Keep your login details safe. You are responsible for what happens in your account. Tell us at once if you think someone else has accessed it.
• Give us a real email address: we use it for sign-in, receipts and important notices about your account.
• You can delete your account at any time in your profile (Profile settings → Delete account).

3. Free and premium access

Riffs marked “Free” are available without payment. Premium gives access to every riff in the library and every practice feature for the period you paid for. The library grows and changes over time; we may add, update or remove riffs, but a paid period always includes the premium library as it is during that period.

4. Prices and payment

• Prices, the billing period and the currency are shown on the Plans page and at checkout before you pay. Taxes, if any, are included in the price shown.
• Payments are processed by independent payment services: lava.top (bank cards), Patreon (membership), and a direct USDT (TRC-20) transfer to the wallet shown at checkout. The payment service’s own terms also apply to the payment. We never see or store your full card details.
• Premium is switched on when the payment service confirms the payment. For USDT, this happens once the exact amount arrives on the blockchain within the time shown at checkout.
• A receipt is issued for each payment in line with Russian tax rules for self-employed professionals.

5. Auto-renewal and cancellation

• Card payments through lava.top and Patreon memberships renew automatically at the end of each period, for the same period and at the price in effect at that time, until you cancel. The renewal is charged to the same payment method.
• You can turn off auto-renewal at any time on the My plan page (for Patreon, in your Patreon account). After cancellation no further charges are made, and premium stays on until the end of the period you have already paid for.
• USDT payments are one-off: they do not renew. To continue, you pay again before the end date; the new period is added to the remaining one.
• If we change the price of a subscription, the new price applies only from your next renewal, and we will tell you by email in advance, so you can cancel before it applies.
• If a renewal payment fails, premium ends when the paid period ends. You can buy premium again at any time.

6. Refunds and the right of withdrawal

• Premium is digital content that you receive immediately after payment. By paying, you ask us to start access right away and you acknowledge that, where you have a statutory right of withdrawal (for example, as a consumer in the EU or the UK), you lose it once access has started.
• This does not affect your other rights under the consumer law of your country. If you were charged twice, charged after you had cancelled, or could not use premium because of a fault on our side that we did not fix, write to support@riffkiller.fun within 30 days of the charge and we will refund the payment for that period.
• Refunds are made through the same payment service you paid with. USDT transfers can only be refunded in USDT to an address you give us, minus the network fee; a transfer sent with the wrong amount or after the time shown at checkout is handled the same way on request.

7. Promo codes and gifts

A promo code or gift gives premium for the period stated with it. It cannot be exchanged for money, is valid only until the date stated with it, and may be used once unless its terms say otherwise.

8. Content and intellectual property

• The videos, tabs, Riff DNA breakdowns, texts, design and software of the Service belong to us or to our licensors. Musical works and recordings referred to in the lessons belong to their respective rights holders; the lessons are educational performances and analysis of short excerpts.
• We give you a personal, non-exclusive, non-transferable licence to use the content for your own practice during your access. You may not copy, download (except through features of the Service), record, share accounts, publish, resell or otherwise use the content commercially, or use it to train software, without our written permission.
• The share card you can create when you kill a riff is yours to post on social networks.
• If you believe something on the Service infringes your rights, write to support@riffkiller.fun with the details and we will review it promptly.

9. Acceptable use

Do not break the law through the Service, try to get around premium restrictions, interfere with the Service or other users, scrape it automatically, or test its security without our permission. We may suspend or close an account that seriously or repeatedly breaks these Terms; if we close it without fault on your part, we refund the unused part of a paid period.

10. The Service “as is”

We work to keep the Service available and the lessons accurate, but we cannot promise that it will always be uninterrupted or error-free, or that you will reach a particular playing level. Practise at a comfortable volume and take breaks; stop if you feel pain.

11. Liability

To the extent the law allows, our total liability to you under these Terms is limited to the amount you paid us in the 12 months before the claim, and we are not liable for indirect losses. Nothing in these Terms limits liability that cannot be limited by law, including your mandatory rights as a consumer.

12. Changes to these Terms

We may update these Terms, for example when we add features or the law changes. The version and date are shown at the top. For important changes we will tell signed-in users by email or on the site at least 14 days in advance. Changes do not affect a period you have already paid for. If you do not agree, you can cancel and delete your account.

13. Law and disputes

These Terms are governed by the law of the Russian Federation. If you are a consumer, you also keep the protection of the mandatory rules of the country where you live. Please write to us first: most issues can be solved quickly by email. EU consumers can also use their national dispute-resolution bodies.

14. Contact

Email: support@riffkiller.fun. We answer within 10 working days, usually much sooner.

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