Last updated: August 16, 2026
This Privacy Policy describes how Guitar Theory Studio ("the App", "we", "us") collects, uses, and protects your information.
Account information. When you create an account, we collect your email address and a password. Your password is never stored in plain text — authentication is handled by our backend provider, Supabase, using industry-standard encryption.
Practice data. To provide the App's saved-preset and default-settings features, we store:
This data is used solely to let you return to and reuse your own saved configurations. We do not use it for any other purpose.
Feedback. If you submit a bug report or feature idea through the in-app feedback form, we store your message, your email address, and the app page you were on, so we can follow up and provide support.
Subscription and payment information. If you purchase a Guitar Theory Studio Premium subscription, payment is processed entirely by Apple's App Store or Google Play — we never see or store your payment card details. We receive only confirmation of your active subscription status, via our subscription management provider (RevenueCat) and Apple/Google, so the App can unlock the features included in your plan.
Ask questions. When you use the Ask feature, we store the question you typed, which tool the App opened in response, and technical details of how the answer was produced (whether it was served from our own pattern-matching, a cache, or a language model; how long it took; and what it cost). If you are signed in, questions are stored with your account. If you use Ask without an account, your question is stored without anything that identifies you. We use this to improve how the App understands questions, to diagnose answers that come back wrong, and to keep usage within our cost limits. Deleting your account erases the text of your questions.
Usage analytics. We record a small number of product events — which tool you open, when a shareable link is created or opened, and Ask activity — along with your app version, platform, and how you arrived (for example from a search engine, a social link, or a shared link). Events from signed-in users are linked to the account; events from visitors without an account are linked only to a random identifier stored on your device. This data is stored in our own database and is not sent to any third-party analytics service.
Information we do not collect. We do not collect advertising identifiers or location data, we do not use third-party advertising, analytics, or tracking services, and we do not sell or share your information. The usage data described above stays in our own database.
All account and practice data is stored in a Postgres database managed by Supabase, protected by row-level security policies that restrict every record to the account that created it — no user can access another user's data, including us, except as needed for support or legal purposes described below.
We use your information only to:
We do not sell, rent, or share your personal information with third parties for marketing purposes.
You can permanently delete your account and all associated data at any time from within the App (the "Delete account" option in the app header). This immediately and permanently removes your account, saved presets, and settings from our systems — this action cannot be undone.
You may also contact us at support@guitartheorystudio.com to request a copy of your data or ask questions about this policy.
We retain your account and practice data for as long as your account exists. If you delete your account, all associated data is deleted immediately.
The App is not directed at children under 13, and we do not knowingly collect information from children under 13.
We may update this Privacy Policy from time to time. We'll update the "Last updated" date above when we do. Continued use of the App after changes take effect constitutes acceptance of the revised policy.
Questions about this policy? Contact us at support@guitartheorystudio.com.