Last updated: November 12, 2026.
Your email address and login data (through Supabase Auth), your songs and personal dictionary entries (stored in Supabase), AI usage and credit balances, and your plan and billing status. Payments are processed by Stripe; we never see your full card number. Because we only sell digital goods and services (subscriptions, AI credit packs and digital downloads) and deliver them in-app or by download, we do not ask for or store a shipping address.
When you use the AI Writer, the text you send (and the current song if you include it) is sent through OpenRouter to the AI model that generates the reply. If OpenRouter is unavailable, the request may be sent to Google's Gemini API instead. We don't sell your lyrics or use them to train our own models.
Optional dictionary, rhyme and slang lookups are sent from your browser to Datamuse, dictionaryapi.dev and Urban Dictionary.
The studio keeps an offline copy of your songs in your browser's local storage.
We share data only with the services that run Master Keyz (Supabase, Stripe, OpenRouter, Google Gemini and Vercel hosting), or when the law requires it.
You can ask us to export or delete your data at any time by emailing marvinbradley@gmail.com. Depending on where you live (for example the EU, UK or California) you may have extra rights to access, correct or delete your information, and we'll honour those requests.