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Lomo is a local-first, Markdown-based memo application for Android, built with Jetpack Compose and Material 3.
It manages your notes as plain .md files on your device—no digital walled gardens. It supports S3/Git/WebDAV backup, and you can still sync files however you want (Syncthing, Nextcloud, etc.).
Lomo draws inspiration from excellent predecessors like Memos, Flomo, Moe-Memos, and the Thino plugin for Obsidian. The name itself is a nod to "Local Memo" (or simply Flomo without the F—Foreign/Cloud), as well as a blend of Localsend and Memo.
Why build another one? Most existing solutions require a server or network connection. I wanted the "Memos experience"—lightweight, timestamped thoughts—but strictly offline and based on local Markdown files (proven to be the most universal and portable format).
For a long time, I relied on the Thino plugin in Obsidian. While Thino covers the basics, Obsidian's mobile client can feel heavy, and I found the plugin's mobile UI/UX lacking in snappiness and polish.
Compatibility: Lomo is fully compatible with Thino's daily note format. You can effectively treat it as a standalone, native Android client for your Thino data.
A Note on Maintenance: Lomo is tailored to my own workflow, and I also use it heavily myself. As long as it remains part of my daily toolchain, I plan to keep maintaining it.
A Note on Development: This project was built almost entirely using Google Antigravity and Codex. If you have concerns about the stability of AI-generated code, feel free to fork and adapt it to your needs.
Lomo stores your notes entirely on local storage, so you can back them up and sync them with any method you prefer, including tools like Syncthing. Lomo also includes built-in S3/Git/WebDAV sync options. S3 is the only built-in option that supports end-to-end encryption, so it is strongly recommended if you care about data privacy and security. It is also the sync method used by the author, so it receives the most active maintenance.
Lomo's S3 sync is fully compatible with the Obsidian Remotely Save plugin. That plugin has not been actively maintained for a long time, though, so for Android-to-Android syncing it is recommended to use Lomo's S3 sync directly against the root of your Obsidian vault instead. Lomo's S3 sync also supports custom folder sync, and on Linux it is generally better to sync with Rclone directly.
- Local & Plain Text: All memos are stored as standard Markdown files.
- Material 3 Design: Clean, modern UI with dynamic theming.
- Tag Management: Organize notes with
#tags. Supports nested tags, e.g.,#tag1/tag2. - Review Tools:
- Heatmap: GitHub-style contribution graph for your writing habits.
- Daily Review: Flashback to what you wrote on this day in previous years.
- Widgets: Home screen widgets for quick capture and recent notes.
- Search: Full-text search with indexing.
- Voice Recording: Support for voice memos.
- LAN Sharing: Support sharing notes to other Lomo apps via local network.
- S3 Backup (Recommended): Support backing up notes to standard object storage via S3.
- Git Backup: Support backing up notes to GitHub via Git.
- WebDAV Backup: Support backing up notes via WebDAV. Currently only tested with Nutstore.
If Lomo is useful to you, you can support the project here: Sponsor page.
- Language: Kotlin
- UI: Jetpack Compose (Material 3)
- Architecture: MVVM + Clean Architecture (Domain/Data/UI Separation)
- DI: Hilt
- Async: Coroutines & Flow
- Data:
- File-system based storage (Storage Access Framework)
- Room (for FTS indexing and caching)
- JDK 25
- Android SDK API 37
# Build Debug APK
./gradlew assembleDebug
# Run Unit Tests
./gradlew testDebugUnitTest- Download the latest APK from the Releases page.
- Or, build manually:
- Open the project in Android Studio (Ladybug or newer recommended).
- Sync Gradle.
- Build and Run on an Emulator or Device (Min SDK 26).
- On first launch, select a local folder to store your memos.
This project is licensed under the GNU General Public License v3.0.