Block-based notes
Each note is a stack of blocks, like a Jupyter notebook. Mix text, Markdown and code, then add, reorder and edit freely.
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case study, 2024 to 2026
case study, 2024 to 2026CodeNote
A note app for developers. Text, Markdown and code live together in one note, and anything you share from another app turns into a clean code note.
- Role
- Designed and built end to end
- Status
- Live on Android and Windows
- License
- Community edition, AGPL-3.0
- Built with
- Flutter, Clean Architecture
the full edition adds chat and cloud sync
the problem
Code doesn't fit in normal notes
Developers keep snippets in chats, screenshots, text files and note apps that break the formatting. I wanted one place where code stays readable, where a photo of code becomes real text, and where sharing a file from any app takes one tap.
What it does
1
2
20+ languages highlighted
Python, Dart, C++, Go, Java, JavaScript, TypeScript, SQL, Kotlin, Bash, Arduino, assembly and more. Highlighting runs asynchronously, so long notes stay smooth.
3
Photo to code
Point the camera at code on a screen or in a book. Google ML Kit reads it on the device and turns it into an editable block.
4
Share from anywhere
CodeNote is a share target and an Open With handler for source files. It detects the language and builds a formatted note instantly, and shares notes back as .py, .txt or other files.
5
Tags, groups and chat
Group and tag notes by topic. The full version adds real-time group chat that keeps code formatting, plus cloud sync and notifications.
Clean Architecture, two editions
open source edition is fully offlinePresentationWidgets and BLoCs. The UI updates first, then saves.
depends on
DomainNoteEntity, NoteBlockEntity and use cases. Pure Dart.
implemented by
DataRepositories and sources: Hive locally, Firestore in the full edition.
| No. | Part | Used for |
|---|---|---|
| 01 | flutter_bloc, dartz | State and error handling |
| 02 | GetIt | Dependency injection |
| 03 | Hive | Offline-first storage |
| 04 | Firestore, FCM | Sync, chat, notifications |
| 05 | ML Kit, TFLite | On-device AI |
| 06 | SDK 36, Java 17 | Forced across every plugin |