MusiCraft Stem Splitter vs StemDeck

MusiCraft Stem Splitter is a browser-based tool for separating audio into stems. Its 66 separation modes cover vocals, drums, bass, instruments, choir and sound effects, with options including vocal-and-instrumental, 4-stem, 6-stem and full-band splits. The listed stem types also include guitar, piano, strings, brass, woodwind, saxophone, speech, music and other instruments. Users can upload MP3, WAV, M4A or FLAC files, or select a track from My Music. The in-browser player lets them preview stems and solo or mute them before downloading. Stem splitter mode pages limit uploads to 100 MB and eight minutes. The Free plan includes two editing runs per month and preview playback, but downloads are locked. Paid plans start at $7.49/mo. In Speech / Music / SFX mode, processing costs five credits per minute and output is 320 kbps MP3; 16-bit WAV is available on Studio and Business. The privacy page says uploaded audio is processed securely, not shared with third parties, and stems are deleted after download. The privacy policy also says uploads and generated content may be processed by AI, storage and infrastructure providers.

StemDeck separates songs into stems for practice, study, transcription, remixing, and other creative audio work. Its Demucs htdemucs_6s model separates vocals, drums, bass, guitar, piano, and other sounds. Files accepted include MP3, WAV, FLAC, OGG/Opus, MP4, and M4A, and songs can also be supplied by YouTube URL. The workspace provides waveform lanes, mute and solo controls, volume adjustment, and looping; users can export individual stems or a custom mix in WAV or MP3. Song analysis includes BPM, key, scale, confidence, integrated LUFS, and sample peak level. StemDeck says audio processing runs locally and the app does not transmit, store, cache, or redistribute audio. Internet access is needed for YouTube downloads and an initial model fetch of about 170 MB, which is cached afterward. The project documents Docker and Unraid deployment, source-based web-server use, and a local REST API. It is free, with no account, quota, uploads, or subscription, but handles one job at a time, supports up to six stems, and has no mobile app.