3dSynth Desktop App

The 3dSynth Desktop App is a native build for Windows, macOS, and Linux. It has exactly the same design tools as the web version, plus native file dialogs, offline support, and local license storage. A Premium license is required to run it.

Download

Get the installer from the Gumroad purchase page — your receipt includes download links for all three platforms. See Purchase (Gumroad) for pricing.

Supported platforms

Windows: Windows 10 or newer, 64-bit. Installer (.exe) sets up the app and a shortcut.
macOS: macOS 11 Big Sur or newer. Apple Silicon and Intel builds. Drag the .app from the .dmg into Applications.
Linux: 64-bit .tar.gz archive for most distributions. Extract and run the included binary, or integrate it with your launcher.

First launch

Open the installer and follow the platform prompts.
On first launch you will be asked to activate your license from the Help menu or the startup dialog — see Activating your license.
Once Premium is verified, the app unlocks every feature and remembers your license across restarts.

Desktop-only affordances

Native file handling

Native Save/Open dialogs: File > Open and File > Save As use the operating-system dialog instead of the browser download prompt. You pick exactly where .3dsynth projects, G-code, and STL/OBJ/glTF exports land.
Open Folder: Preset modals include an Open Folder button that jumps to the on-disk preset directory. Great for backing up or syncing via Dropbox/OneDrive.
Recent files: The File menu remembers recently opened .3dsynth projects.

Offline workflow

No network required: After install and license activation, 3dSynth runs fully offline. All code, assets, and docs ship inside the app bundle.
Local presets & projects: Machine, material, nozzle, and printer presets live on disk (see Printer Settings for preset paths). They are not tied to browser storage and survive cache clears.
Analytics disabled: Anonymous analytics are only loaded in the web build. Desktop never sends Plausible or Clarity traffic — see Privacy & analytics.

Preset storage locations

Platform	Folder
Windows	`%APPDATA%\3dSynth\presets\`
macOS	`~/Library/Application Support/3dSynth/presets/`
Linux	`~/.config/3dSynth/presets/`

Each file is a small JSON document, so you can back them up, sync them, or share them between machines by copying files.

Updates

The desktop app checks for updates on startup. New releases add the same improvements tracked in the changelog. When an update is ready, you will see a prompt — accept it to download and relaunch.

Web vs Desktop — what's different?

Area	Web build	Desktop build
All design features	✓	✓
Premium	Activate via License dialog	Activate via Help → License…
File dialogs	Browser download / upload	Native OS dialogs
Preset storage	`localStorage`	JSON files on disk
Offline	Requires PWA install	Always
Analytics	Plausible + optional Clarity	None

Premium features — what your license unlocks.
Activating your license — step-by-step.
Purchase (Gumroad) — pricing and receipts.
Printer Configuration — where presets live on disk.