Legal
Last updated: August 2026
Sterium is a grimoire and magical planning application designed to help users explore moon timing, sabbats, planetary timing, correspondences, spells, and structured personal grimoire entries.
This Privacy Policy explains what information Sterium stores, how it is used, and how you remain in control of your magical and spiritual information.
Sterium may use Apple's Sign in with Apple framework to securely identify your account across your iOS and iPadOS devices.
Authentication is handled through Apple. Sterium does not receive or store your Apple ID password or raw Apple account credentials.
Information created within Sterium may include correspondences, correspondence-bank records, spells, spell details, grimoire entries, custom entry types, notes, spiritual references, ritual information, saved generated pages, and user preferences.
This information is used solely to provide Sterium's grimoire, correspondence, spell, organization, and magical planning features.
Sterium may display magical timing and daily reference information on the homepage and through widgets, including moon information, the next sabbat countdown, planetary day and hour, today's correspondences, lucky hours, and suggested timing for spell work.
Widget information is shared locally between the app and widget extensions using Apple's App Group system when required by iOS.
Sterium allows you to generate and save structured correspondence pages for topics such as colors, herbs, crystals, oils, moon phases, magical intentions, planetary associations, and other correspondence types you choose to create.
Saved correspondence pages are added to your correspondence bank so they can be found, reviewed, and reused inside the app.
Sterium allows you to generate, create, save, and organize spells with structured layouts containing the details, ingredients, timing, instructions, correspondences, notes, and other information you choose to include.
Spell information is stored only to provide the spell-bank, organization, editing, and viewing features of the app.
Sterium includes a grimoire feature where you can create different kinds of entries and view those entries in structured layouts.
Grimoire entries may include titles, categories, body text, fields, notes, associations, and other details you enter for your personal practice.
Sterium may provide optional AI-powered features to help generate correspondence pages, spell pages, and grimoire content based on the prompts or instructions you provide.
Information submitted to these features may be processed by approved AI service providers solely to return the requested generated content. Submitted prompts are not used by Sterium for advertising or behavior profiling.
Sterium may connect securely to shared backend infrastructure and a cloud database so your saved correspondences, spells, grimoire entries, and generated pages can remain available to your account.
Stored records are used to operate the app's account, grimoire, correspondence-bank, spell-bank, and generated-content features. They are not sold to advertisers or data brokers.
Sterium may calculate or display moon phases, sabbat countdowns, planetary day and hour information, correspondences, lucky hours, and recommended spell timing.
These features are intended for personal reference, planning, and spiritual use inside the app.
Sterium does not sell personal information and does not use third-party advertising networks or behavioral advertising systems.
Your spells, correspondences, grimoire entries, notes, spiritual preferences, and generated content are not shared with advertisers.
Sterium may offer optional premium features or subscriptions through Apple's StoreKit framework.
Payment processing is handled entirely by Apple. Sterium does not collect, store, or have access to payment information, billing information, or credit card numbers.
Sterium is not directed toward children under the age of 13 and does not knowingly collect personal information from children.
You maintain control over your information at all times. Correspondences, spells, grimoire entries, generated pages, notes, and other content may be deleted directly within the app when supported by the feature.
Deleting the app removes locally stored data from your device. Account or cloud-stored records may be deleted through Sterium's in-app deletion tools or by contacting support.
This privacy policy may occasionally be updated to reflect new grimoire modules, widget features, generated-content tools, legal requirements, platform changes, or improvements to the app.
Updated versions will be published on this page with a revised effective date.
If you have questions about this privacy policy or how Sterium handles your information, you can contact: