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IQuantize End User License Agreement
This document covers the iQuantize app and its sync backend. Use of this website is governed by the Website Terms of Use and the Website Privacy Policy.
Last updated: August 3, 2026
This End User License Agreement ("Agreement") is between you and Relato Garrido - Unipessoal Lda ("IQuantize"), a company registered in Portugal under VAT number PT516683152, with registered office at Rua das Palmeiras, Lote 5, 244, Quinta da Marinha, 2750-005 Cascais, Lisboa, Portugal, for use of the IQuantize app and related backend services (the "Service"). If the student is under the age of majority, a parent or guardian must review and accept this Agreement for the student.
1. Acceptance
The app displays a startup agreement before account-backed sync begins. By selecting the agreement checkbox, you accept this Agreement and acknowledge that you received the Privacy Policy. If you choose a paid subscription, submitting Stripe or Apple purchase confirmation also confirms the subscription terms below. Acknowledging the Privacy Policy is not blanket consent for processing that requires separate consent. If you do not agree, do not use the app.
2. License
IQuantize grants you a limited, non-transferable, non-exclusive license to use the app for personal music practice and learning. You may not copy, reverse engineer, resell, or redistribute the app or its content except as allowed by law or by platform terms.
3. Student Practice Service
IQuantize listens to MIDI drum input, compares played notes with authored practice material, and gives feedback about timing, rhythm, note accuracy, dynamics, tempo, and progress. The app is an educational practice tool. It is not a substitute for professional music instruction, medical advice, or safety supervision.
4. Automatic Account-Backed Sync
After the startup agreement is accepted, the app creates or validates a guest account-backed sync identity, including installation, setup, local profile, and server-token state. No name, email address, username, or password is required for guest sync. A name and verified email are required only for an optional website-billed Pro account. Sync then runs automatically when a network connection is available. The student does not manually manage sync state.
Synced data can include installation and profile identifiers, practice attempts, per-bar and per-axis metrics, timing/statistics, user-song progress, settings, MIDI maps, favorites/tombstones, library/cache state, redacted latest hardware configuration, analytics sessions/events, and teacher/student link state. Sync is used for app functionality, progress continuity, diagnostics, analytics, and product personalization inside IQuantize.
Practice data is stored on the device first. Core local practice features are designed to remain available without a network connection. Account sync, remote content, deletion confirmation, progress continuity across installations, and other online features require connectivity and may be delayed or unavailable. Queued changes sync when service becomes available. Backend availability is not guaranteed.
5. Verified Pro Accounts and Subscriptions
The Developer ID-distributed macOS app may offer iQuantize Pro through a Stripe subscription. To subscribe, you provide a name and email address, confirm a single-use email link, and enter billing details only on Stripe's hosted Checkout. The verified email is the account identifier and cannot be changed through the account page. Passwordless browser access lasts for up to 120 days and can be renewed by requesting another single-use link. Separate app installations that verify the same email share the subscription entitlement but do not merge practice histories.
The app may include a 14-day local Pro trial. That trial does not itself create a paid subscription, require payment details, or automatically charge you when it ends. A paid Stripe subscription begins only after you approve Stripe Checkout. Before purchase, Checkout displays the selected plan, billing period, amount, currency, applicable taxes, and any trial or promotion that actually applies. Website subscription prices are shown as 14.99 EUR per month or 120 EUR per year unless Checkout displays an updated price before you confirm. Subscriptions renew automatically for the selected billing period until canceled.
Use the Stripe Billing Portal from the account page to update payment information, review the current subscription, cancel, and download available invoices or receipts. Cancellation normally takes effect on the date shown by Stripe; Pro continues only while Stripe confirms an entitled subscription or the documented limited offline grace applies. Account deletion cancels non-terminal Stripe subscriptions before removing the account and may end access immediately. Failed or reversed payments, refunds, chargebacks, or suspected fraud may suspend or revoke Pro. Contact support@iqtz.app for billing help or a refund request. Refunds are governed by applicable consumer law and the payment provider's rules; nothing in this Agreement limits mandatory cancellation, cooling-off, or refund rights.
App Store-distributed subscriptions are purchased and managed through Apple, use the price and terms shown by Apple before confirmation, and are subject to the Apple Media Services terms in addition to this Agreement. IQuantize does not ask an App Store user to purchase the same in-app subscription through Stripe.
6. Teacher and Student Linking
Teacher/student linking is not available in the v1.0.3 release UI. Automatic background sync does not grant a teacher access to a student's data. If IQuantize enables linking in a later release, it will be a user-visible action and teacher access will require an accepted link.
7. Privacy
The Privacy Policy explains what data is collected, how it is used, retention expectations, account deletion, and privacy choices. It is a privacy notice and does not create warranties or contractual rights beyond this Agreement or applicable law.
8. Content and Ownership
The app, curriculum, visual design, source code, backend service, and bundled learning content are owned by IQuantize or its licensors. You retain your rights in your own practice activity, but you grant IQuantize the right to process synced data to operate and improve the Service as described in this Agreement and the Privacy Policy.
9. Acceptable Use
You agree not to misuse the Service, interfere with backend systems, attempt unauthorized access, upload malicious data, bypass security controls, or use the Service in a way that violates applicable law or the rights of others.
10. Updates and Changes
IQuantize may update, suspend, restrict, replace, or discontinue app features, content, or backend services. Availability of any particular feature, score, recommendation, curriculum item, device integration, or online service is not guaranteed. Material legal changes may require renewed acceptance before account-backed sync continues. Nothing in this section limits rights that cannot lawfully be limited.
11. Account and Data Deletion
Students or guardians can start deletion in Settings > About > Delete Account. A verified website-billed account requires a fresh email sign-in and explicit whole-account confirmation at cnc.iqtz.app; an installation credential alone cannot delete every linked device. The Service first expires open Checkout sessions and cancels non-terminal Stripe subscriptions. A Stripe failure leaves the account intact so billing is not orphaned. Successful deletion removes every installation linked to the verified customer account, backend identifiers, browser sessions, synced practice/progress, settings, hardware snapshots, analytics, library/cache state, and teacher/student links. Returning to each linked app within 7 days completes its local practice-data purge and creates a fresh local identity; after that confirmation window, contact privacy@iqtz.app for help completing the local purge. Bundled or downloaded lesson content that is not account data remains available. The Service and Stripe may retain transaction, tax, invoice, dispute, or accounting records required by law, plus a nonidentifying deletion receipt for up to 7 days to confirm completion and safely handle retries. Email privacy@iqtz.app for privacy questions or help.
12. Disclaimers
To the maximum extent permitted by applicable law, the app and Service are provided "as is," "as available," with all faults, and at your sole risk. IQuantize disclaims all express, implied, and statutory warranties and conditions, including merchantability, satisfactory quality, fitness for a particular purpose, accuracy, quiet enjoyment, title, and non-infringement. No oral or written information, feedback, score, recommendation, support response, or other communication creates a warranty.
Scoring, timing analysis, skill estimates, progress summaries, and recommendations are automated educational estimates. They may be incomplete, inaccurate, delayed, or unavailable and do not guarantee improvement, learning outcomes, examination results, professional qualification, hardware compatibility, data preservation, or fitness for a particular student's needs. You remain responsible for safe practice, suitable equipment and supervision, and keeping separate copies of any records you need. IQuantize does not guarantee uninterrupted or error-free operation, correction of defects, continued backend availability, or recovery of lost data.
13. Limitation of Liability
To the maximum extent permitted by applicable law, IQuantize and its owner, developer, affiliates, and licensors are not liable for personal injury or for indirect, incidental, special, consequential, exemplary, or punitive damages, or for loss of data, progress, content, profits, revenue, business opportunity, or goodwill, arising from or related to the app, Service, inability to use them, or reliance on any score, feedback, recommendation, or result, under any legal theory and even if advised that such damage was possible.
To the maximum extent permitted by applicable law, the total aggregate liability of IQuantize and its owner, developer, affiliates, and licensors for all claims arising from or related to the app, Service, or this Agreement will not exceed the greater of the amount you paid for the app during the 12 months before the event giving rise to the claim or US $50. These exclusions and limits apply even if a remedy fails of its essential purpose.
Nothing in this Agreement excludes or limits liability that cannot lawfully be excluded or limited, including liability for fraud, fraudulent misrepresentation, wilful misconduct, gross negligence where applicable, or death or personal injury caused by negligence. This Agreement does not limit mandatory statutory consumer rights. Some jurisdictions do not allow certain warranty exclusions or liability limitations, so parts of Sections 11 and 12 may not apply to you.
14. Termination
You may stop using the app at any time. IQuantize may suspend or terminate access if the Service is misused or if continued operation would create legal, security, or operational risk.
15. Contact
The app and Service are developed and operated by Relato Garrido - Unipessoal Lda, VAT PT516683152, Rua das Palmeiras, Lote 5, 244, Quinta da Marinha, 2750-005 Cascais, Lisboa, Portugal.
For privacy, legal, or deletion-help questions, contact privacy@iqtz.app. For product support, contact support@iqtz.app.
16. Apple App Store Terms
If you obtained the app through Apple's App Store, you and IQuantize acknowledge that this Agreement is between you and IQuantize, not Apple, and IQuantize is solely responsible for the app and its content. The license is limited to use on Apple-branded products you own or control as permitted by the Apple Media Services Usage Rules, including permitted Family Sharing or volume purchasing. You must comply with applicable third-party terms when using the app.
IQuantize, not Apple, is responsible for maintenance and support required by applicable law. Apple has no obligation to provide maintenance or support. If the app fails to conform to an applicable warranty that has not been validly disclaimed, you may notify Apple and Apple may refund the purchase price, if any. To the maximum extent permitted by law, Apple has no other warranty obligation.
IQuantize, not Apple, is responsible for addressing claims relating to the app or your possession or use of it, including product-liability, regulatory, consumer-protection, privacy, and intellectual-property claims. You represent that you are not located in a country subject to a United States government embargo or designated as supporting terrorism and are not listed on a United States government prohibited- or restricted-party list.
Apple and its subsidiaries are third-party beneficiaries of this Agreement. Upon your acceptance, Apple may enforce this Agreement against you as a third-party beneficiary.