Terms of Service

Multilingual versions are translations to aid understanding. The Japanese original prevails for legally accurate content.

These Terms of Service (the “Terms”) set out the conditions for using “Kawaii REC” (the “Service”) provided by RATIO Lab. LLC (the “Company”). Users must agree to these Terms before using the Service.

Article 1 (Application and amendments)

These Terms apply to the Web, Windows and Mac versions of the Service and related services. In accordance with applicable law, the Company may amend these Terms by announcing the changes and their effective date through the Service or the Company's website.

Article 2 (Accounts)

Registration and login with a Google account are required to use cloud storage, billing features, AI singing consultations and similar functions. Users must provide accurate information and manage their authentication credentials at their own responsibility. Lending or transferring accounts to third parties is prohibited.

Article 3 (Plans and prices)

We offer a free plan, a one-time-purchase plan for ¥11,000, a monthly plan for ¥500 and an annual plan for ¥5,000. Unless otherwise stated, displayed prices include tax. The monthly, annual and one-time-purchase base plans provide the same Kawaii REC features, apart from differences in contract duration and guarantees. A one-time purchase permits perpetual use of the applicable version at the time of purchase and guarantees access, at no additional charge, to the latest updates provided by the Company as part of the Service for two years from the purchase date (or, for a special code, the date it is applied to the account). If the Company offers a paid major update after that period, one-time-purchase users are guaranteed the right to purchase that major update at a 20% discount from its regular selling price. Monthly and annual plans include access to updated versions during the subscription period. Kawaii Effects Rack FULL is a separate, additional one-time-purchase product, normally priced at ¥7,000: ¥5,000 through the end of August 2026; from September 2026, ¥5,000 for annual and one-time-purchase plan users and ¥7,000 for others. FULL includes VST3/AU versions with the same functionality as the Web version (with a different UI). The installer can be obtained free of charge, but exporting is unavailable until a license is applied. Users may also voluntarily tip the Company. Tips are voluntary support for the continued individual development and operation of the Service and do not constitute a promise to provide additional features, unlock paid plans, provide gifts or offer any other consideration.

Article 4 (Payment, automatic renewal and cancellation)

The Company uses Stripe for payments for monthly, annual and one-time-purchase plans and tips, and KOMOJU for sales of special codes for one-year or one-time-purchase plans. Business licenses allow monthly and annual seats to be used within the same organization, with payment through Stripe or KOMOJU from the dedicated organization page. The payment methods selected by users on each checkout screen are subject to the terms, payment deadlines, fees and other conditions set by Stripe, KOMOJU Co., Ltd., card companies, financial institutions and other payment providers.

Monthly and annual plans renew automatically at the end of each contract period until canceled by the user. Users may continue using the plan after cancellation until the end of the paid period. Special codes purchased through KOMOJU are issued after payment is confirmed and may each be applied once to one Kawaii REC account only. Purchasers are responsible for managing their codes and preventing loss, disclosure or use by unintended third parties, including before gifting a code. A redeemed code cannot be transferred to another account.

Receipts may be issued, but the Company is not a registered qualified invoice issuer. Documents issued will therefore not state a qualified invoice issuer registration number and do not constitute qualified invoices under Japan's invoice system.

Except where required by law or where the Company is responsible, the Company does not accept cancellations, prorating, returns, refunds or reissuance of codes for user-related reasons after provision of the Service has begun, after a special code has been issued or after a code has been redeemed. If payment is incomplete, canceled, expired, deemed fraudulent or refunded, the Company may decline to issue a special code or deactivate issued codes or paid features.

Article 5 (User content)

Rights in audio, projects and other content imported, recorded, edited or created by users belong to the users or the legitimate rights holders. Users are responsible for obtaining the necessary rights and permissions for backing tracks, musical works, lyrics, recordings and other materials they use. The Company handles user content only to the extent necessary to provide the Service, store and synchronize data, and respond to technical problems.

Article 6 (YouTube integration)

YouTube integration provides streaming playback through the official embedded player. The Service does not save, extract or export YouTube video or audio. Users must comply with YouTube's terms, rights-holder permissions and embedding restrictions.

Article 7 (AI features)

AI output, including that of “Vocal Coach Mashiro,” is general reference information and is not guaranteed to produce results or to be accurate or complete. It is not medical treatment or diagnosis. Stop using the feature and consult a medical institution or other qualified professional if you experience pain, hoarseness, difficulty breathing or any other abnormal symptoms. Users must independently verify information for important decisions.

Article 8 (Prohibited conduct)

Prohibited conduct includes violations of laws, public order and morals or third-party rights; unauthorized access; reverse engineering; interference with operation of the Service; impersonation; bypassing authentication, usage limits or billing controls; transmitting malware or similar software; using copyrighted works without permission; bulk or automated access to AI features; and other conduct the Company reasonably considers inappropriate.

Only accounts newly registered through the dedicated link that use “Try paid features” or any paid plan count toward invitation rewards. Self-referrals, multiple accounts held by the same person, fraudulent payments, false information and other artificial inflation are excluded. The Company may revoke results and rewards it reasonably determines to be fraudulent.

Article 9 (Changes and suspension of the Service)

The Company may change or suspend all or part of the Service for maintenance, malfunctions, disasters, suspension of external services, security needs or other unavoidable circumstances. Important changes will be announced in advance where possible.

Article 10 (Suspension of use and account termination)

If a user violates these Terms, fails to pay fees or if necessary to protect the Service, the Company may restrict use, delete data or suspend the account without prior notice.

Article 10-2 (Email notifications)

The Company may send notices concerning payments, security, amendments to terms, retention deadlines and other matters necessary for provision of the Service to registered email addresses. Optional communications about creative support, new features, JOURNAL, campaigns and similar topics are sent only with the user's explicit consent and can be unsubscribed from at any time through settings or the unsubscribe link in each email.

Article 11 (Data management)

Users must back up important recordings and projects themselves. The Company takes reasonable security measures but cannot completely prevent loss caused by device failure, deletion of browser data, failures of external services or similar events.

If a free-plan user does not log in for 12 months after their last login, the Company deletes that user's cloud audio, projects, account information and other data within the Service. Deleted data cannot be restored. This automatic deletion does not apply while a paid plan is active. However, the minimum information necessary under law or to protect the Company's legitimate rights, including payment and transaction records, fraud-prevention records and security logs, may be retained for the necessary period.

Article 12 (Intellectual property rights)

Rights in the Service's programs, designs, names, documents and other materials provided by the Company belong to the Company or the legitimate rights holders. These Terms do not transfer those rights to users.

Article 13 (Limitations on warranties and liability)

The Company does not guarantee continuous availability of the Service, fitness for a particular purpose or the completeness of recording, correction, mixing, BPM measurement or AI output. If a user suffers damage for a reason attributable to the Company, its liability is limited to the service fees paid by that user in the preceding 12 months, except in cases of intent or gross negligence or where the law does not permit such a limitation.

Article 14 (Personal information)

Personal information and similar information are handled in accordance with the separately established Privacy Policy. Privacy Policy

Article 15 (Shared business licenses)

In addition to these Terms, the application forms, quotations, agreements and operating conditions agreed between the Company and the business apply to the Creator Partner Program and other shared business licenses. Usage rights granted to affiliated individuals are generally valid only during their affiliation or contract with that business. Businesses and affiliated individuals must not share license codes with unauthorized persons or bypass seat, duration or billing controls. Rights under a personal plan separately contracted by an individual are not lost solely because business usage rights end.

Article 16 (Governing law and jurisdiction)

These Terms are governed by Japanese law. The district court or summary court having jurisdiction over the location of the Company's head office has exclusive agreed jurisdiction at first instance over disputes relating to the Service.

Established: July 6, 2026 / Last revised: August 4, 2026

Operator: RATIO Lab. LLC

Kawaii REC Pro · JPY / USD · 2026-09-15

JPY: Monthly ¥500 / Annual ¥5,000 / Lifetime ¥11,000 / Kawaii REC Pro ¥16,000 / Effects Rack FULL Standard price ¥7,000 · Annual/lifetime customer price ¥5,000. USD: Monthly US$5 / Annual US$50 / Lifetime US$110 / Kawaii REC Pro US$160 / Effects Rack FULL Standard price US$70 · Annual/lifetime customer price US$50.

Kawaii REC lifetime access, bundled with Kawaii Effects Rack FULL.

Keep using your purchased version. Kawaii REC updates are guaranteed for two years from purchase.

Own Rack FULL permanently, including the browser, VST3 and Audio Unit versions.

The bundle costs the same as lifetime access plus the eligible-customer Rack price. Existing licenses remain unchanged.

Monthly plans are available only through Stripe and renew automatically. Annual plans renew automatically with Stripe; KOMOJU and PayPal offer prepaid one-year codes without automatic renewal. Redeem purchased codes in your account. Lifetime, Pro and Effects Rack FULL purchases are also available.

New purchases in Japanese use JPY with Stripe, KOMOJU or PayPal. Other languages use USD with Stripe or PayPal. Existing subscription prices and currencies remain unchanged.

Kawaii REC Pro includes Rack FULL. Rack is sold separately from standard Kawaii REC plans.