Effective and last updated: November 12, 2026. Version 1.

Privacy Policy

Big Cal is operated by Actually Good Ideas LLC. This policy explains what Big Cal uses, what leaves your device, and how you can make choices about your information. Contact us at privacy-bigcal@actuallygoodideas.com.

The main points

• You can use Apple Calendar by hand without allowing AI sharing.
• With your permission, OpenAI processes information for live voice, typed calendar requests, scans and cloud read-aloud. Relevant details may include sensitive information you provide.
• Your saved phone list stays on your device. Big Cal does not upload your entire address book.
• You can turn AI sharing off and request deletion of your Big Cal data. Deleting Big Cal data does not delete your Apple Calendar events or iPhone Contacts, or cancel an Apple subscription.

Information on your device

Big Cal uses Apple Calendar permission to read events, show your schedule and save changes you request. Calendar information can include titles, times, locations, notes, reminders and participants. If your Apple Calendar syncs with iCloud or another service, that provider also handles the events under your account settings.

Your preferred name, display choices, selected contacts and phone numbers, and some conversation or review information are stored on your device. Big Cal keeps encrypted pending work and recent activity so you can recover interrupted tasks and understand changes. Recent activity is limited to 100 actions within the last 30 days. Clearing activity does not delete the events themselves.

Big Cal can use your microphone after you start a conversation. Camera, photo and file features use pages you choose to scan. Offline practice uses Apple's on-device speech recognition when supported, or buttons; that practice path does not send speech to a live AI service or change your real calendar. Bundled lesson recordings play locally.

When information goes to OpenAI

Big Cal asks before sharing information with OpenAI. With permission, the feature you choose may send:

• Voice audio, transcribed words and conversation context to understand and answer a spoken request.
• Typed requests and relevant calendar details to interpret the change or answer you ask for.
• Selected scan images and extracted text to identify event information.
• Text selected for cloud read-aloud to generate speech.
• Names, contact details or invitation recipients included in your request or relevant event information.

This information can include health details, such as a medical appointment or information visible on a page. Only select information you want processed and have permission to share. Big Cal uses its server to authorize and coordinate these features; live audio may travel directly between your device and OpenAI.

Read How Big Cal uses OpenAI for feature details. OpenAI's API data controls describe its processing and retention. API rules differ from settings for a personal ChatGPT account. OpenAI describes API content as not used for model training by default unless the API customer opts in, and describes abuse-monitoring retention that can include up to 30 days, with exceptions. Request and response content sent through OpenAI’s Responses API can also be retained as application state under that API’s settings and retention rules. This is separate from abuse-monitoring logs and from Big Cal’s cleanup of an original scan image. We do not promise that information is never retained or immediately erased by every provider.

Accounts, voice minutes and purchases

Auth0 handles sign-in and account identity. Big Cal uses account identifiers, sign-in information and, when provided by sign-in, profile or email information to authenticate you and connect your services. Private installation credentials may identify an app installation separately from an account.

Big Cal records voice allowance and usage, session status, subscription verification and account or installation ownership. These records help enforce limits, restore eligible access, recover interrupted sessions and prevent misuse. Apple handles App Store payment information. Big Cal receives transaction and subscription information needed to verify access, not your full payment-card details.

Signing in or linking voice access does not itself authorize AI sharing. Free hosted voice requires eligible signed-in or securely linked access; a verified monthly subscription may provide access under its plan.

Other services and recipients

We use service providers to run Big Cal: Auth0 for identity, OpenAI for AI processing, Vercel for hosting and temporary private scan storage, Neon for database services, and Cloudflare for this website’s hosting and delivery. The first App Store release uses calendars available through Apple Calendar on your iPhone. Direct Google, Outlook and Gmail account connections are not offered in this version. If you share a saved event using Mail or another app, that app and its provider handle the content and recipients you approve. Big Cal does not automatically read your inbox or track invitation delivery and replies.

Calendar actions and invitations may share relevant details with the calendar provider and the recipients you select. Device calls, notifications, printing, exports and sharing also involve Apple or the destination you choose. Copies you export or send outside Big Cal are controlled by those destinations.

Hosting and security systems may process technical information such as IP addresses, request times, errors and device or connection details to deliver and protect the service. If you contact us, we receive your message and contact information to answer it. Please avoid including sensitive calendar or medical details unless needed for your request.

We may disclose information when reasonably necessary to comply with law, respond to lawful requests, protect people or secure the service. A business transfer may require transferring relevant records, subject to applicable privacy protections. Big Cal does not include advertising trackers. We do not sell personal information or share it for cross-context behavioral advertising.

Visiting this website

The Big Cal information website does not use advertising trackers, analytics scripts or embedded third-party widgets. Its pages, artwork and fonts are served with the website. Cloudflare hosts and delivers this website and may process technical request information, including IP addresses, for delivery and security. See Cloudflare’s privacy policy. Following an external link takes you to a service with its own privacy practices. Sending us an email shares the information you choose to include through your email provider.

How long information is kept

Different information has different purposes and lifetimes:

• Device preferences, saved contacts and pending work remain until cleared, replaced, completed or removed through the app's data controls. Recent activity has the limit described above.
• Scan images and extracted content are temporary processing data. Larger original images can enter private Vercel storage. The service attempts to remove originals after processing. Upload authorization expires after 20 minutes, and a scheduled cleanup process is designed to remove expired originals. Failed or interrupted cleanup can delay deletion; an expired upload link does not mean the stored image has already been erased. Contact us for help removing an uploaded image.
• Account, connection, invitation details and status, voice-usage and subscription records are kept while needed to provide and protect your access, handle recovery and meet applicable obligations. The local recent-activity limit does not apply to these server records. Account deletion removes the personal records covered by the deletion process.
• Minimal security revocation records and aggregate usage totals can remain after deletion to prevent old credentials or retries from bypassing safeguards.
• Provider logs, backups and legally required records can follow separate retention schedules. Contact us if you need information about a particular category or deletion request.

Your choices and deletion

Open More, then Privacy & Safety to turn OpenAI sharing off. This stops future sharing through those features; it does not undo processing that already occurred. You can continue manual Apple Calendar use and printing. Microphone, Calendar, camera and photo permissions can be changed in your device's Settings.

During pre-release testing, automated account deletion may be unavailable or remain pending while provider setup is completed. Contact us if the app cannot finish your request.

Use Delete my Big Cal data in Privacy & Safety to request removal of your Big Cal account or installation profile and associated local data. You may need to sign in again to prove ownership. If a provider operation cannot finish, the app reports deletion as pending and offers recovery instead of claiming completion.

Deleting Big Cal data does not delete Apple Calendar events, iPhone Contacts or copies you exported. It does not cancel an Apple subscription; cancel that separately in your App Store subscription settings. Contact privacy-bigcal@actuallygoodideas.com if you cannot access the app or need help with a privacy request. We may need information to verify that the request concerns your data.

Your rights and where processing occurs

Depending on where you live and the circumstances, you may have rights to access, correct, delete or obtain a copy of your information, or object to or restrict certain processing. Some requests are subject to legal exceptions and identity verification. You may also have the right to complain to your local privacy regulator. Contact us to exercise applicable rights; we will handle requests under the laws that apply.

Big Cal and its providers may process information in the United States and other countries where they operate. Privacy laws may differ from those where you live. Applicable transfer requirements must be met when information is moved between countries.

Security, children and updates

Big Cal uses measures such as authenticated access, ownership checks, encrypted local sensitive records and private scan storage. No service can guarantee absolute security.

Big Cal is designed for adults and is not directed to children under 13. Contact us if you believe a child has provided personal information so we can investigate and address it.

We may update this policy as features or practices change. We will identify the updated version and provide any notice or permission request required for material changes. Questions go to Actually Good Ideas LLC at privacy-bigcal@actuallygoodideas.com.