NC Collectives

An unofficial native Android client for the Nextcloud Collectives app — wiki-style markdown notebooks hosted on your own Nextcloud server.

Features:

* Browse collectives and nested page trees.
* Render markdown pages, including images, links, task lists, tables, syntax-highlighted fenced code blocks (Prism4j, themed against the app's Material 3 colour scheme), Nextcloud Text callouts (INFO / WARN / ERROR / SUCCESS), and ==highlight== marks.
* View-first by default with a per-page edit toggle. Two editors ship side-by-side: a native markdown editor with formatting toolbar + live preview swap that works offline (default), and a collaborative WebView editor backed by Nextcloud Text (beta — multi-user real-time editing, callouts, multi-line tables, math) used when the server supports it and you're online. Choose the default under Settings → Editor.
* Offline read cache and offline edit queue. Last-write-wins on conflict; local edits are preserved as drafts attached to the page.
* Full-text search via the Nextcloud unified-search provider.
* Favourites and recent searches, persisted across sessions.
* Per-page tags, emoji, rename, and move (folder pages supported). Browse all pages carrying a given tag.
* Long-press to drag pages and reorder them within their parent — same subpageOrder the web Collectives UI uses.
* Duplicate page action.
* Attachments: view inline images, upload from camera or gallery.
* Trash + restore (per-page and per-collective), with pre-commit undo on a snackbar for page trash.
* Create new collectives, change a collective's emoji, soft-delete + restore + permanently delete collectives.
* Share-intent quick capture from any app (text, URLs, single or multiple images).
* Backlinks: collapsible "linked from" row under every page that shows which other pages reference it.
* Wikilink support: [[Page Name]] and relative .md links resolve in-app.
* Light, Dark, or System theme; Material 3 styling.
* Configurable background sync cadence (Off, 1h, 6h, 12h, daily).
* Adaptive launcher icon with a monochrome layer for Android 13+ themed icons.
* Splash screen.
* Manual update check: a button in Settings under About asks the GitHub Releases API whether a newer version has been published, and opens the release page in a browser tab if so. Nothing is checked at launch and nothing runs in the background; the app never downloads or installs anything itself. F-Droid users can ignore it entirely — updates come through F-Droid as normal.

Requirements:

* Android 10 (API 29) or newer.
* A Nextcloud instance with the Collectives app installed, served over HTTPS. Plaintext (http://) server URLs are refused at login.

Authentication uses Nextcloud Login Flow v2 — you authorise the app from your browser and the server returns a device-scoped app password. Your account password is never seen, transmitted, or stored by the app. Revoke the device at any time from your Nextcloud security settings.

Privacy:

* The app talks only to the Nextcloud server you configure. The one exception is the manual update check in Settings, which contacts api.github.com only when you press the button, on a separate HTTP client that never carries your Nextcloud credentials.
* No Google Play Services. No Firebase. No analytics. No telemetry. No crash reporters. No advertising IDs.
* The device-scoped app password is stored in EncryptedSharedPreferences (Tink-backed). Signing out wipes the keystore entry along with every cached row and preference.

This project is not affiliated with, endorsed by, or supported by Nextcloud GmbH or the Nextcloud Collectives team. "Nextcloud" and "Collectives" are trademarks of their respective owners.

Is NC Collectives free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does NC Collectives require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is NC Collectives safe to install?
We link to the exact APK published by megamaced. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update NC Collectives?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

1. Tap the Download APK button above and save the file to your device.
2. Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
3. Open the downloaded com.megamaced.nccollectives.apk file from your Downloads folder.
4. Tap Install and wait for Android to finish.
5. Open «NC Collectives» by megamaced and grant only the permissions it actually needs.
6. Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.