# Obby > An open-source native macOS notes app built with Swift and SwiftUI. Notes are ordinary Markdown files in a user-selected folder, with normal folders and attachments. AI is optional. ## Product principles - Normal files: the notes folder is the source of truth, not a proprietary note database. - Controlled AI actions: search, read, create, edit and organise notes inside the chosen folder. Deletion requires confirmation. Available actions depend on model capabilities. - Model choice: local Ollama, Anthropic, Google Gemini or OpenAI-compatible services. Cloud requests may include relevant notes and attachments. - Requires macOS 13 or later; the current release targets Apple silicon. - Apache License 2.0. ## Resources - [Website](https://vivaansurti-jpg.github.io/Obby/): Overview, product principles and download. - [Source and documentation](https://github.com/vivaansurti-jpg/Obby): README, build instructions and application source. - [Download for macOS](https://github.com/vivaansurti-jpg/Obby/releases/latest/download/Obby.dmg): Latest release asset. - [Releases](https://github.com/vivaansurti-jpg/Obby/releases): Release history. - [Technical report section](https://vivaansurti-jpg.github.io/Obby/#report): “Simplicity and Beyond”. The report file/link is not yet available on the website. The website is a single page. Product screenshots are explicitly marked placeholders.