DotCal · Legal

Privacy
Policy.

DotCal stores your calendar data locally on your device. Your calendar content does not go to Dotfield Studio servers.

No cloud storageNo account requiredNo analyticsNo data sold

Overview

DotCal does not collect your calendar content and does not transmit events, tasks, reminders, attachments, or settings to Dotfield Studio. Your calendar data exists only on your Android device.

This privacy policy covers the DotCal Android application (com.dotfield.dotcal), published by Dotfield Studio. The policy applies from the date of your first installation.

DotCal has no Dotfield backend, no account system, no advertising, and no analytics SDK embedded in the app. Google Play services are used for Play Billing, subscriptions, purchase restore, subscription management, and in-app update checks.

Voice dictation is a separate system service interaction: DotCal uses on-device recognition when available. If it is unavailable, the device's selected speech-recognition service may process the audio; DotCal does not retain the raw dictation audio.

Data we collect

DotCal does not collect, store, or transmit your calendar content to Dotfield Studio. The following data exists on your device when you use the app:

Data type	Where stored	Sent anywhere?	We can access?
Calendar events & tasks	Device local database	Never	No
Reminder alarms	Android AlarmManager	Never	No
Voice notes	App private directory	Never	No
Voice dictation audio	On-device recognizer when supported; otherwise the selected system speech service	May be processed by the system service	No
Image and PDF attachments	App private directory	Never	No
Theme and app settings	Local preferences	Never	No
Contact birthdays, if enabled	Copied locally as events	Never	No
Google Calendar events, if imported	Copied locally from CalendarProvider	Never	No
Crash or usage analytics	Not collected	Never	No

Payment processing, receipts, trials, renewals, cancellations, promo redemption, and account-level purchase data are handled by Google Play, not by Dotfield Studio. DotCal stores only a local Pro entitlement flag after a successful purchase, subscription, or restore.

App permissions

DotCal requests only the permissions it needs to function. Each permission is described below, including why it is needed and what it cannot access.

Permission	Type	Why it is needed
READ_CALENDAR	Required*	Read events from Android CalendarProvider for local Google/system calendar sync. No data leaves the device. *Only if sync is enabled.
WRITE_CALENDAR	Required*	Create and edit events through CalendarProvider for two-way sync. *Only if sync is enabled.
READ_CONTACTS	Optional	Read contact birthdays to create yearly recurring events. Only dates are used.
CAMERA	Optional	Scan DotCal QR event or shift-plan codes. Camera frames are not stored.
SCHEDULE_EXACT_ALARM / USE_EXACT_ALARM	Required	Schedule precise reminder alarms through AlarmManager. The permission path depends on the Android version and device policy.
RECEIVE_BOOT_COMPLETED	Required	Re-register reminder alarms after device reboot.
POST_NOTIFICATIONS	Required	Display event and task reminder notifications on Android 13 and above.
USE_FULL_SCREEN_INTENT	Optional	Allow full-screen reminder alerts when that alert behavior is enabled.
RECORD_AUDIO	Optional	Record voice notes attached to events and provide Quick Add voice dictation. Dictation uses on-device recognition when available; otherwise the selected system speech-recognition service may process the audio. DotCal does not retain raw dictation audio.
Photo and document pickers	Optional	Select images and PDFs. DotCal copies only files you choose.
Device credential / biometric	Optional	Unlock App Lock through Android authentication. Biometric data is not stored by DotCal.
INTERNET	Required	Google Play Billing, subscription management, in-app update checks, and external links. Not used by DotCal to upload calendar data, analytics, or ads.
BILLING	Required*	Pro purchases, trials, promo redemption, and restore through Google Play.
VIBRATE / WAKE_LOCK / FOREGROUND_SERVICE	Required	Support reliable reminders and reminder alerts.
FOREGROUND_SERVICE_SPECIAL_USE	Optional	Support the special-use foreground service used by the Nothing Glyph Toy on compatible devices.
Nothing Glyph	Optional	Local Glyph Toy integration on compatible Nothing devices.

Google Calendar sync

DotCal does not connect to the Google Calendar API. It reads Android’s built-in CalendarProvider—the local database used by the default Calendar app.

When sync is enabled, DotCal reads events that Google has already synced to the device and copies them into DotCal’s own local database. DotCal does not see or store Google credentials or tokens.

DotCal supports provider reminders, recurrence exceptions, modified recurring occurrences, RDATE dates, event status, availability, time zones, and provider meeting metadata. If sync is disabled, DotCal stops querying CalendarProvider; previously imported events remain local until deleted.

Local storage

All DotCal data is stored in Android app-private storage under /data/data/com.dotfield.dotcal/. It is deleted automatically when you uninstall DotCal.

Stored data includes the local SQLite database, preferences, voice notes, image and PDF attachments, templates, calendar sets, shift patterns, private vault metadata, and recently deleted snapshots.

DotCal does not write to shared external storage unless you explicitly export, back up, or share a file. Automatic Android app backup is disabled by DotCal. A backup file is created only when you explicitly use DotCal’s local JSON backup tool.

Third parties

DotCal does not integrate third-party SDKs for analytics, advertising, crash reporting, remote configuration, or A/B testing. It uses Google Play Billing, Google Play In-App Updates, and the Nothing Glyph SDK for the purposes described in this policy.

Quick Add voice dictation uses Android’s on-device speech recognizer when available. If on-device recognition is unavailable, DotCal uses the device’s selected speech-recognition service; that service may process the audio under its own policy. DotCal receives the recognition result and does not retain the raw dictation audio.

External links such as Google Play listings and Discord open outside DotCal and are governed by those services’ own policies. These services do not receive your calendar events, tasks, reminders, attachments, voice notes, or settings from DotCal.

Security

Because DotCal stores calendar data locally and does not upload calendar content, the main risk is physical device access. Keep your device PIN or biometric lock active and enable DotCal App Lock when appropriate.

DotCal’s local database is not encrypted by default. Android’s app sandbox and device-level encryption provide the primary protection for data at rest.

Children’s privacy

DotCal does not knowingly collect information from anyone, including children under 13. The app is a general-purpose calendar with no content directed at children.

Your rights

Because DotCal does not collect or store personal data on its servers, there is no server-held data for us to access, export, or delete on your behalf.

Access: your data is in the app on your device.
Delete: delete individual items in the app or uninstall DotCal.
Export and backup: use ICS, local JSON backup, image, PDF, or DotCal QR tools.
Portability: events synced through CalendarProvider remain in Android’s calendar database.

If you are in the EU, UK, or California, GDPR and CCPA rights apply. Because Dotfield Studio holds no calendar content, these rights are exercised on-device.

Policy changes

If this policy changes materially—for example, if DotCal adds cloud sync, analytics, advertising, or a Dotfield server feature—we will update this page and its effective date. A release note will flag the change.

Effective date: August 14, 2026

Contact

Questions about this privacy policy or DotCal’s data practices:

Dotfield Studiodotfieldstudio@gmail.com

PrivacyPolicy.