Privacy Policy
Last updated: September 22, 2026
PaperCal is an iOS app, operated by PrizmLabs, that turns your calendar into a customizable document you can print, export, or share. This Privacy Policy explains what information PaperCal handles, where it lives, and the choices you have. It's written to describe exactly what the app does today — nothing more, nothing less.
Information We Handle
PaperCal does not have its own server or backend for your calendar content. The information below either stays on your device or, if you choose to connect Google, is read from your Google account directly by the app on your device.
Content you create in PaperCal:
- PaperCal events you add (title, date, time, location, notes)
- Notes and checklists you write on any date
- Images and stickers you place on your calendar
- Calendar documents, themes, and layout/customization settings
Information imported from Google, only if you connect your account:
- Google Calendar events you choose to view (title, date, time, and which calendar it belongs to)
- Google Tasks you choose to view (title, notes, due date, and completion status)
Authentication information: if you connect Google, PaperCal stores the security tokens Google issues (see “Google Authentication” below) so it can keep reading your calendar without asking you to sign in every time.
Diagnostic or analytics information: none. PaperCal does not use any analytics, advertising, crash-reporting, or tracking software of any kind. The app does write ordinary technical debug messages on your device during development (for example, “imported 12 events”), but these never leave your device and PrizmLabs does not receive them.
Google Calendar Access
If you choose to connect Google Calendar, PaperCal requests read-only access to your calendars — it asks Google for permission only to view your events, never to create, change, or delete them.
PaperCal uses this access to import your events so it can display, lay out, and print them alongside content you add yourself. Your Google Calendar is never modified by PaperCal, no matter what you do inside the app.
You can disconnect Google Calendar at any time from PaperCal's Settings. Google is a separate, independent service governed by its own privacy policy and terms, which we encourage you to review.
Google Tasks Access
If you choose to enable it, PaperCal requests read-only access to your Google Tasks, separate from Google Calendar access.
Tasks are imported so you can see and print them alongside your calendar for planning purposes. PaperCal never creates, edits, completes, or deletes anything in your Google Tasks.
You can disconnect or reconnect Google Tasks independently from Google Calendar, at any time, in Settings. Google is a separate, independent service governed by its own privacy policy and terms.
Google Authentication
When you connect Google, PaperCal opens a secure sign-in screen provided directly by Apple and Google (not a screen built by PaperCal). You sign in on Google's own page. PaperCal never sees or receives your Google password.
After you approve access, Google gives PaperCal a security token instead of your password. That token is stored in your device's Keychain — the same secure, encrypted storage iOS uses for passwords — separately from your calendar content, and is never stored on any PaperCal server, because none exists.
Disconnecting in Settings deletes these tokens from your device immediately; PaperCal will no longer be able to read your Google Calendar or Tasks unless you reconnect. If you'd also like to remove PaperCal from the list of apps with access to your Google Account itself, you can do that any time from your Google Account's permissions page, independently of PaperCal.
Local Storage
Your PaperCal documents, events, notes, checklists, images, stickers, customization settings, and any imported Google content are stored locally on your device using Apple's SwiftData framework. None of this is automatically uploaded to a PaperCal server — there isn't one for your calendar content to go to.
Widgets
If you add a PaperCal widget to your Home Screen, the app needs a small, current snapshot of your calendar to show there — for example, today's schedule and which days have events or notes. PaperCal shares this limited snapshot with the widget using Apple's App Group feature, a private storage area on your device shared only between PaperCal and its own widget. This snapshot never includes your Google sign-in tokens or your saved images, and it never leaves your device.
PDF Export and Printing
PaperCal can generate a PDF of your calendar entirely on your device, then hand it to Apple's standard printing or sharing tools so you can print it, save it, or send it elsewhere. Once you share or export your calendar to another app, printer, or service, that destination's own privacy practices apply — PaperCal has no visibility into, or control over, what happens to your content after that point.
Data Retention
Because your calendar content lives locally on your device, it stays there for as long as you keep it in the app. Removing an item inside PaperCal, deleting the app, or erasing your device removes that content, subject to normal iOS behavior — for example, if you've enabled device backups in iOS Settings, a copy may exist there until that backup is itself deleted or overwritten, in line with Apple's own backup behavior. PaperCal does not operate any backup or sync service of its own.
Data Deletion
You're in control of your PaperCal data at all times:
- Delete individual events, notes, checklists, images, or stickers directly within the app
- Disconnect Google Calendar or Google Tasks from Settings, which deletes the locally stored access tokens
- Revoke PaperCal's access to your Google Account entirely from your Google Account's own permissions page
- Delete the app to remove all of PaperCal's locally stored data, including its widget snapshot, from your device
Third-Party Services
The only third-party service PaperCal connects to is Google, for the Google Calendar and Google Tasks access described above. PaperCal does not integrate any advertising, analytics, or tracking services.
Children's Privacy
PaperCal is a general-purpose calendar and printing tool, not directed at children, and we do not knowingly collect personal information from children. If you believe a child has provided personal information through PaperCal, please contact us using the information below.
Security
PaperCal uses reasonable practices to protect your information, including storing Google authentication tokens in the iOS Keychain and communicating with Google only over encrypted (HTTPS) connections. No method of storage or transmission is completely secure, however, and we cannot guarantee absolute security.
Changes to This Privacy Policy
We may update this Privacy Policy from time to time as PaperCal changes. If we make material changes, we'll update the “Last Updated” date above. We encourage you to review this page occasionally.