The store picker and the export screen were the two frontend surfaces the own-store work left unbuilt, so both backends shipped unreachable. Settings gains a Storage section holding them: a full-screen picker over Own / an installed external provider (dimmed when none is present, named after the provider's own app), and an export screen with a per-list tick and the two SAF destinations, a folder or a single zip. The picker asks for the provider's runtime permission before writing the mode, so a denial leaves the readable store in place instead of dropping the user on the gate; a refusal is reported with a route to app settings. Making the mode switchable at runtime had two consequences: - reminders are armed off whichever store was active when they were scheduled, so a switch rebuilds the set. ReminderScheduler.sync() is now serialised — it is a read-modify-write over ScheduledReminderStore, and overlapping runs each wrote their own set as the whole truth - the permission gate is the only screen an External user can reach once their provider app stops answering, so it offers the way back to our own store ExportWriter no longer deletes a previous export before recreating it (a failure in between lost both), lists the target directory once instead of per document, and carries a typed ExportFailure so the screen can report in the user's language rather than an exception message.
Agendula
A modern Material 3 Expressive task app for Android.
Keeps your tasks on your device, or on top of a tasks provider you already use.
Open standards, no account required.
Agendula is the task-list sibling to Calendula.
Where Calendula is a pure front-end over Android's CalendarContract, Agendula
keeps its own store, designed around RFC 5545's VTODO — the same tasks DAVx5
(and SmoothSync, DecSync, …) sync out of your CalDAV server. It can also read and
write a tasks provider you already have, for anyone already syncing that way.
The name rhymes with its sibling on purpose: Agendula is agenda — Latin for
“things to be done” — given Calendula's -ula ending. Calendula keeps your days;
Agendula keeps your to-dos. (A Calendula flower head is botanically a cluster of
many small florets — so the two apps are florets of one bloom.)
Where your tasks live — your choice
| Where | Sync | Needs | |
|---|---|---|---|
| On your device (default) | Agendula's own database | none yet — CalDAV sync of our own is planned | nothing. No account, no permissions, no other app |
| In a provider you already use | OpenTasks or tasks.org | whatever syncs it for you — DAVx5 and friends | that app installed, and its read/write permission |
Agendula's own store is an ordinary app database — nothing is published to other apps, so there is no authority to clash over and no permission to grant. It coexists with OpenTasks rather than replacing it: installing one never breaks the other, and if you already sync through a provider, that keeps working exactly as it did.
Recurring tasks are expanded per RFC 5545, and everything the schema does not model is round-tripped verbatim rather than dropped — so passing your tasks through Agendula does not quietly lose fields a server sent.
Your tasks are exportable as standard iCalendar .ics files at any time, because
data you can't take with you isn't really yours.
Status: backend complete, UI catching up. Storage, reads and writes, smart-list filtering, a self-scheduled reminder engine, and export are built and unit-tested. The Material 3 Expressive screens are being built on top, one at a time — the storage-mode picker and export screen are not there yet. See
docs/ROADMAP.mdfor status,docs/ARCHITECTURE.mdfor how it's built, anddocs/STORAGE-AND-SYNC.mdfor why storage works the way it does.
Sync sources (by design)
In external-provider mode Agendula works with anything that writes to that provider — DAVx5 (CalDAV), SmoothSync, CalDAV-Sync, DecSync CC, or any Android sync adapter — because it builds on the provider, not on any one sync app. Google Tasks / Microsoft To Do are out of scope by design (proprietary; they would mean owning a sync stack). Open standards — CalDAV / iCalendar / DecSync — are the lane.
Translations
Agendula ships in English so far, and would like not to. Translations are managed on a self-hosted Weblate, and partial ones are fine — an untranslated string simply falls back to English.
No coding needed: register on the Weblate server, pick (or request) a language, and translate the strings in your browser. You can also reach this link in the app from the top of Settings → App language.
License
MIT — see LICENSE.