Skip to content

stemdeckapp/stemdeck

v0.4.0-alpha.1 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 22d Dashboards & Home Pages
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

ReleasePort's take

Light signal
editorial:auto 13d

The v0.4.0‑alpha.1 release adds a native macOS app via Tauri 2, an automated first‑launch wizard, Metal‑based stem separation for Apple Silicon, universal builds for both architectures, and backend shutdown on unexpected shell exit.

Why it matters: Test the new installer workflow in dev; enable Metal acceleration on M1+ devices to improve performance; verify graceful backend termination after crashes. All changes are included in v0.4.0‑alpha.1.

Summary

AI summary

Updates macOS, What's new, and CI / Build Pipeline across a mixed release.

Changes in this release

Security Low

Unsigned macOS app may trigger Gatekeeper warning; users can open via right‑click or System Settings.

Unsigned macOS app may trigger Gatekeeper warning; users can open via right‑click or System Settings.

Source: granite4.1:30b@2026-05-23-audit

Confidence: low

 —
Feature Medium

Native macOS application available, built with Tauri 2.

Native macOS application available, built with Tauri 2.

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

First-launch wizard automatically downloads backend and dependencies.

First-launch wizard automatically downloads backend and dependencies.

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

Native builds provided for both Apple Silicon and Intel architectures.

Native builds provided for both Apple Silicon and Intel architectures.

Source: llm_adapter@2026-05-21

Confidence: low

 —
Feature Medium

Native macOS app (StemDeck) available as .dmg for Apple Silicon and Intel.

Native macOS app (StemDeck) available as .dmg for Apple Silicon and Intel.

Source: granite4.1:30b@2026-05-23-audit

Confidence: low

 —
Feature Medium

First-launch setup wizard downloads backend runtime, FFmpeg, and Demucs models automatically (~170 MB).

First-launch setup wizard downloads backend runtime, FFmpeg, and Demucs models automatically (~170 MB).

Source: granite4.1:30b@2026-05-23-audit

Confidence: low

 —
Dependency Low

First launch downloads FFmpeg and Demucs model files as part of the runtime package.

First launch downloads FFmpeg and Demucs model files as part of the runtime package.

Source: granite4.1:30b@2026-05-23-audit

Confidence: low

 —
Performance Medium

Stem separation uses Metal Performance Shaders on M1 and newer.

Stem separation uses Metal Performance Shaders on M1 and newer.

Source: llm_adapter@2026-05-21

Confidence: low

 —
Performance Medium

Stem separation uses Metal Performance Shaders (MPS) on Apple Silicon Macs for faster processing.

Stem separation uses Metal Performance Shaders (MPS) on Apple Silicon Macs for faster processing.

Source: granite4.1:30b@2026-05-23-audit

Confidence: low

 —
Bugfix Medium

Backend automatically terminates when desktop shell exits unexpectedly.

Backend automatically terminates when desktop shell exits unexpectedly.

Source: llm_adapter@2026-05-21

Confidence: high

 —
Full changelog

macOS Native App

StemDeck is now available as a native macOS application (.dmg) for both Apple Silicon and Intel Macs.

What's new

  • Native macOS app
    Built with Tauri 2, including a first-launch setup wizard that automatically downloads and installs a self-contained backend runtime. No Python or system dependencies required.

  • Apple Silicon acceleration (MPS)
    Stem separation uses Metal Performance Shaders on M1 and newer Macs for significantly improved performance.

  • arm64 + x64 builds
    Separate native builds are available for both Apple Silicon and Intel architectures.

  • Backend watchdog
    The Python backend process is automatically terminated if the desktop shell exits unexpectedly.

Downloads

| File | Platform | Acceleration |
|---|---|---|
| StemDeck-macOS-arm64.dmg | macOS Apple Silicon (M1/M2/M3/M4) | Metal (MPS) |
| StemDeck-macOS-x64.dmg | macOS Intel | CPU |
| StemDeck-Windows-x64.zip | Windows | CPU |
| StemDeck-Windows-x64.NVIDIA.zip | Windows + NVIDIA GPU | CUDA |

The .tar.zst files are internal runtime packages and are not required for normal installation.

Installation

macOS

  1. Download the correct .dmg file for your Mac
  2. Open the DMG
  3. Drag StemDeck.app into the Applications folder
  4. Launch StemDeck

On first launch, StemDeck automatically downloads:

  • Backend runtime
  • FFmpeg
  • Demucs model files

Approximate first-time download size: ~170 MB

Subsequent launches start in seconds.

Gatekeeper Warning (macOS)

Because the application is currently unsigned, macOS may display a security warning on first launch.

To open the app:

  • Right click StemDeck.app
  • Select Open
  • Confirm by clicking Open again

Alternatively:

  • Open System Settings → Privacy & Security
  • Click Open Anyway

CI / Build Pipeline

  • macOS arm64 and x64 packages were built and validated on a macOS Woodpecker CI agent before release upload.
  • Windows packages were scanned with ClamAV during CI before publication.
View diff on GitHub

Weekly OSS security release digest.

The CVE patches and breaking changes that affected production tools this week. One email, every Sunday.

No spam, unsubscribe anytime.

Share this release

Share on X Share on Bluesky

Track stemdeckapp/stemdeck

Get notified when new releases ship.

Sign up free

About stemdeckapp/stemdeck

All releases →

Related context

Earlier breaking changes

  • v0.6.0-alpha.1 Moves library and stems storage from `~/Library/Application Support/` to `~/Documents/StemDeck/`.

Beta — feedback welcome: [email protected]