IdeaMemo

Introduction: A quick record app written with Jetpack Compose.

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A lightweight card-style note app built with Jetpack Compose.

简体中文 | English

✨ Features

IdeaMemo is a lightweight Android card-note app. Record your ideas as cards with text and images, organized by #TAG.

Card notes: mixed text and images, optional note titles, rendered in Markdown.
Tag system: index notes with #TAG; a dedicated tag list page and clickable tag row on the home page.
Search: full-text search bar right on the home page, with saved search history (flow chips, up to 4 rows).
Gallery mode: a Xiaohongshu-style waterfall feed for notes with images.
Multi-select: batch select and delete notes on the home page.
Recycle Bin: deleted notes are soft-deleted into a recycle bin — restore them, delete permanently, or empty it entirely.

Calendar view with a contribution heatmap and iOS-style wheel date filtering.
Random Walk: resurface a random note whenever you have a spare moment.
Statistics: days recorded, note count, character count, and media count at a glance.

Material 3 dynamic color and light/dark theme modes.
Adjustable font size (small / standard / large / extra large), applied app-wide.
In-app language switching: English, 简体中文, 繁體中文.

Privacy first: almost no permissions required — all data stays in your local database.
Biometric lock: protect your notes with fingerprint/face unlock.
Auto-link toggle: optionally stop phone numbers, emails, and URLs from being linkified.

WebDAV backup & restore to your own private cloud, with editable config.
Local backup: full backup/restore as a compact ZIP (attachments included, ~50% smaller than before).
Export notes as Markdown / TXT / HTML.
Import Markdown / TXT files (multi-note Markdown exported by IdeaMemo is auto-split) and HTML backups.
LAN share: view your phone's notes from a computer browser on the same network.
Share as image: turn any note into a beautiful share card, and save note photos to local storage.

Notes now support optional titles, and update times are shown on cards, preview, share, and gallery pages.
New Recycle Bin: soft-deleted notes can be restored, deleted permanently, or the bin emptied in one tap.
App-wide font size (4 levels) and an auto-link toggle.
Improved import/export: Markdown / TXT import & export (remembers the last export location), HTML backup restore.
DayNight system theme, exit-confirmation dialog on the home page, and other refinements.

Install Android Studio (bundled JDK 17), open this repo, and run the app module directly.
Or from the command line: ./gradlew :app:assembleDebug (gradlew.bat on Windows). Building requires JDK 17 and compileSdk 36 (Android 16).
Minimum supported version is Android 8.0 (API 26).

Feel free to contribute code, but please don't mention simple fix code!
Share your ideas and suggestions. If you’re missing a feature or have an interesting idea, feel free to create a new Issue.
Report bugs. Encountered a crash or something went wrong? Create a new Issue with as much detail as possible to help resolve it.
Enjoy the app. The best contribution is simply using and enjoying the app I spent so much time on!