Privacy Policy — Agendula
- -
- Last updated: {lastUpdated}
- Applies to the Android app Agendula{' '}
- (package de.jeanlucmakiola.agendula), all versions and all
- distribution channels.
-
In short
-- Agendula has no servers, no user accounts and no analytics. Your tasks live - on your device. They leave it in exactly one case: if you set up a CalDAV - account yourself, they are synchronised with the server you - entered — and with nothing and no one else. Nothing is ever sent - to the developer. -
- -1. Controller
-
- {LEGAL.business}
- {LEGAL.street}
- {LEGAL.city}
- Email: {LEGAL.email}
-
2. No data collection by the developer
-- Agendula contains no analytics, no tracking, no advertising, no - crash-reporting SDK and no third-party service that reports anything - anywhere. No user profile is created, no advertising or device - identifier is generated, and no data is shared with or sold to anyone. - There is no Agendula account, and the developer operates no server that the - app talks to. -
-- All of this is verifiable in the{' '} - source code, - which is public. -
- -3. Where your tasks live — your choice
-- Agendula offers two storage modes, and you pick one: -
--
-
- - On your device (the default) — your task lists, tasks and - reminders are kept in Agendula's own database inside the app's private - storage. Nothing is published to other apps, and uninstalling the app - removes it. - -
- - In a tasks provider you already use — OpenTasks or - tasks.org. Agendula then reads and writes that app's task database - through Android's provider mechanism, after you grant its read/write - permission. Whatever already synchronises that provider (DAVx5, - SmoothSync, DecSync CC, …) keeps doing so, unchanged; that synchronisation - is performed by those apps, not by Agendula, and their privacy policies - apply to it. - -
4. CalDAV sync — the only case where your tasks leave the device
-- Sync is optional and off until you add an account. If you add one, - everything below happens between your device and the server you - nominated, and nowhere else. -
- -What is stored on your device
-- The server address, your username, and your password or app password. The - password is encrypted with a key held in the Android Keystore, which cannot - be exported from the device. -
- -What is transmitted, and to whom
--
-
-
- The tasks in the synchronised lists, as standard iCalendar
- (
VTODO) data, and the credentials needed to authenticate. -
- -
- Requests carry the user agent
Agendula (Android)— a fixed - string, so that you can recognise and revoke the session on your server. - No device identifier is sent. -
- - - Connections are HTTPS. Cleartext HTTP is refused, so credentials are - never sent over an unencrypted connection. - -
- Under Google Play's Data Safety definitions this counts as{' '} - collected — Play defines collection as transmitting data - off the device, regardless of who receives it — and not - shared, because the only recipient is the server you chose. Data is - encrypted in transit. -
- -Finding your server
-
- When you type a server address or an email domain, Agendula follows the
- standard discovery procedure (RFC 6764): a DNS lookup for the{' '}
- _caldavs._tcp service record of that domain, then{' '}
- /.well-known/caldav on the host. The DNS query goes to whichever
- resolver your device or network uses, and the requests go to the domain you
- typed — no directory of servers is consulted and no lookup is sent to the
- developer.
-
Signing in to a Nextcloud
-
- If the server is a Nextcloud, Agendula uses Nextcloud's Login Flow v2: your
- browser opens your own server's login page, you authorise there,
- and the server hands the app a dedicated app password. Agendula never sees
- your actual account password. The app password appears in your server's
- “Devices & sessions” list as Agendula (Android), and you can
- revoke it there at any time. Removing the account in Agendula revokes it too,
- where the server supports that.
-
Your server's own policy
-- Your CalDAV provider has its own privacy policy, and your data on their - server is governed by it. Agendula has no relationship with them. -
-- A note on certificates: Agendula trusts private certificate authorities that - you have installed in your device's user store, because self-hosted servers - routinely use them. That is a deliberate trade-off in favour of - self-hosters — any CA installed on your device (for example by an employer's - management profile) can, in principle, intercept traffic from the app, as it - can from other apps that make the same choice. -
- -5. Other data Agendula handles on your device
- -Reminders and notifications
-- Due-date reminders are scheduled by the app itself and displayed as local - notifications. Nothing is sent to a push service — there is no push service. -
- -Export files
-
- You can export your tasks as standard iCalendar .ics files.
- Agendula writes exactly the file you select through Android's system file
- picker, and has no access to other files.
-
App settings
-- Your preferences (theme, language, list and reminder defaults and similar) - are stored locally on your device and are removed when you uninstall the - app. -
- -6. Backups
-- If Android Auto Backup is enabled on your device, your tasks and settings - may be backed up to your own Google account, under Google's terms — the - developer has no access to it. Two things are deliberately excluded from - that backup: your stored CalDAV password, and Agendula's per-device sync - bookkeeping. After restoring onto a new device you therefore sign in to your - server again. -
- -7. Crash reports
-- If Agendula crashes, it offers to report the problem. Nothing is sent - automatically, even though the app has network access. The report is copied - to your clipboard and your browser is opened with the project's issue - tracker, the text pre-filled. You see the full content, you decide - whether to submit it, and you can edit or discard it. -
-Such a report contains:
--
-
- app version, -
- Android version, -
- device manufacturer and model, -
- your device language, -
- the timestamp, -
- and the technical stack trace. -
- It is built from that fixed list and nothing else: no task - data, no server address or credentials, no{' '} - account names, no log files and no personal - identifiers. -
-- If you choose to submit it, the report becomes a public issue on the - project's issue tracker at Codeberg, operated by Codeberg e. V. - Their privacy policy then applies to that submission. -
- -8. External links
-- The app links to the source code, the licence, the issue tracker, the - translation platform (Weblate) and a voluntary donation page (Ko-fi). - Following one of these links opens your browser and leaves the app; the - privacy policy of the respective website then applies. Agendula transmits no - data of yours in the process — it only opens the address. -
- -9. Permissions and why they exist
--
-
-
-
INTERNET,ACCESS_NETWORK_STATE— CalDAV sync with - the server you configure, and checking whether a connection exists before - trying. Without a CalDAV account, no connection is made. -
- -
-
READ_SYNC_SETTINGS,WRITE_SYNC_SETTINGS— register - the sync account with Android's sync framework so it can be scheduled. -
- POST_NOTIFICATIONS— show reminders.
- -
-
USE_EXACT_ALARM,SCHEDULE_EXACT_ALARM— deliver - reminders at the exact due time. -
- -
-
RECEIVE_BOOT_COMPLETED— re-register pending reminders after a - restart. -
- -
-
org.dmfs.permission.READ_TASKS/{' '} -WRITE_TASKSandorg.tasks.permission.READ_TASKS/{' '} -WRITE_TASKS— optional, requested only if you choose the - external-provider storage mode, and only for the provider you selected - (OpenTasks or tasks.org). -
- -
-
WAKE_LOCK,FOREGROUND_SERVICE— required by the - Android system component used for scheduled background work - (WorkManager); on older Android versions it needs them to run an - expedited sync. -
-
- Agendula publishes no content provider of its own and declares no - permissions that other apps could request. -
- -10. Distribution channels
-- Agendula is distributed via F-Droid, Obtainium, a self-hosted repository - and, where applicable, the Google Play Store. When you download or update - the app, the operator of that channel processes data (such as your IP - address) under their own privacy policy. This is outside the developer's - control and unrelated to the app's own behaviour. -
- -11. Children
-- Agendula is not directed at children and collects nothing about anyone. -
- -12. Deleting your data
--
-
- - Remove a CalDAV account (Settings → Accounts) deletes the - stored credential and, where the server supports it, revokes the app - password. The task lists become device-only lists rather than being - destroyed. - -
- - Remove an account and delete its local data removes those - lists and their tasks as well. - -
- - Uninstalling the app removes everything Agendula stored on - the device. - -
- Data on your CalDAV server is deleted on that server; data in an external - tasks provider is deleted in that app. -
- -13. Your rights
-
- The developer stores no personal data of yours — the only data transfer the
- app performs is between your device and a server you operate or chose. There
- is therefore no data held by the developer to which rights of access,
- rectification, erasure, restriction, data portability or objection
- (Art. 15–21 GDPR) could apply. Your tasks are exportable as standard{' '}
- .ics files from within the app at any time. You may contact the
- address above with any question, and you have the right to lodge a complaint
- with a supervisory authority.
-
14. Changes to this policy
-- Should the app's functionality change in a way that affects data processing, - this policy will be updated and the date at the top adjusted. The version - history is publicly traceable in the project's source repository. -
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