Atelier
A studio for every app you build
Overview
Atelier is a native macOS app for developers and makers who want a single home for every app idea, project, and release. Each project gets a workspace that carries it through a clear arc: Idea to Brainstorm to Roadmap to Releases to ship to Feedback and back into the Roadmap, alongside Details and Notes. It is built with Tauri 2 as a plain HTML, CSS, and JavaScript frontend over a small Rust backend, so it stays light and fast. Everything is offline-first and local-only. Your portfolio lives in a plain JSON file in Application Support, outside the app bundle, written atomically so a crash mid-save cannot corrupt it, and reinstalling never touches your data.
Optional iCloud Drive sync copies that file across your Macs, and data is only ever copied, never deleted. Bring-your-own-key AI is the connective tissue: connect Anthropic, OpenAI, Gemini, OpenRouter, or any custom OpenAI-compatible endpoint, and AI buttons help you brainstorm, plan, and refine. With no key connected the AI falls back to a local heuristic so the flow still works offline. You can attach mockups, link a project to its code folder and write an ATELIER-TASKS.md handoff for a coding agent, pull a real app icon from any installed app, and export or import a single self-contained backup. There is no account, no telemetry, and no server.
Features
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Idea-to-release workspace
Each project moves through Brainstorm, Roadmap, Releases, Feedback, Details, and Notes, with feedback flowing back into the roadmap so nothing gets lost between stages.
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Bring-your-own-key AI
Connect Anthropic, OpenAI, Gemini, OpenRouter, or any custom OpenAI-compatible endpoint. Keys are read in Rust only when an AI action runs and never reach the webview. With no key connected, a local heuristic produces offline drafts so the flow still works.
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Local-only, offline-first storage
Your portfolio is a plain JSON file in Application Support, outside the app bundle, written atomically (temp file then rename). Reinstalling never touches it, and there is no account or server.
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Optional iCloud Drive sync
Point your live data at an iCloud Drive folder to sync across your Macs. Data is only ever copied between locations, never deleted, so nothing is lost when you turn sync on or off.
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Mockups, icons, and code-folder handoff
Attach HTML, PDF, or image mockups per project, pull a real icon from any installed app, link a project to its code folder, and write an ATELIER-TASKS.md so a coding agent can read the current plan.
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Single-file backup and restore
Export and import a self-contained backup (JSON plus base64-embedded mockups) through native Save and Open dialogs, and reveal the data folder in Finder.
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Local release reminders
A scheduled release can fire a local macOS notification while Atelier has run and the Mac is awake. It is not a server and never reaches your phone; the in-app due indicator always shows.
Screenshots
Version history
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1.0.028 June 2026
First Developer ID signed release. Idea-to-release workspaces (Brainstorm, Roadmap, Releases, Feedback, Details, Notes), local-only atomic JSON storage, and bring-your-own-key AI across Anthropic, OpenAI, Gemini, OpenRouter, and custom endpoints with an offline heuristic fallback.
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0.9.027 June 2026
Added optional iCloud Drive sync that copies your data across Macs without ever deleting it, plus a sync-status pane and background sync polling.
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0.8.027 June 2026
Reworked the project grid and Details view, added per-project mockup import with thumbnails, and code-folder linking with an ATELIER-TASKS.md handoff for coding agents.
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0.7.024 June 2026
Single-file backup and restore (JSON with embedded mockups), pull a real app icon from any installed app, and local notifications for scheduled releases.
Privacy
Your data stays on your device
Atelier keeps everything on your Mac in a local JSON file with no account and no telemetry. Nothing leaves your device unless you choose it. If you connect your own AI key, the prompt and the project content you act on are sent directly to that AI provider so it can respond. If you turn on iCloud sync, your data file is copied to your own iCloud Drive. API keys are kept in the macOS Keychain, not in the data file.
Read the full privacy policy →