StemPlayer VS StemSplitterAI

StemPlayer's answer

• React and Vite for the browser app, hosted on Cloudflare Pages
• Web Audio API for the mixer, with time-stretching so a slowed-down song keeps its pitch
• Python and FastAPI for the backend
• Demucs, a neural network for music source separation, running on a cloud GPU
• Browser storage (IndexedDB) for the song library, so songs stay on your device

StemSplitterAI's answer:

StemSplitterAI is built with Next.js, React, TypeScript, Tailwind CSS, better-auth, Drizzle ORM, Stripe, Cloudflare R2 storage, and cloud-based AI stem separation providers. The product runs in the browser for upload, preview, stem controls, checkout, and download workflows.

StemPlayer's answer

• StemPlayer is a free beta used by individual musicians: guitarists, bass players, drummers, singers and music teachers. It has no business customers.

StemSplitterAI's answer:

StemSplitterAI does not publish named customer logos yet. The product is currently aimed at independent musicians, singers, teachers, bands, and creators who need custom backing tracks from uploaded audio.

StemPlayer's answer

Six stems with dedicated guitar and piano channels, opened straight in a practice mixer in the browser. You do not get a zip of files to take somewhere else: you mute your part, slow the song down without changing the pitch, loop a section and play along, all in one place, with nothing to install.

StemSplitterAI's answer:

StemSplitterAI is focused on creating practical backing tracks, not just exporting raw stems. Users can choose outcome-based presets such as vocal remover, drum remover, bass backing, karaoke, or full stems, preview 30 seconds for free, then process the full song only if the result is useful. It also uses one-time credits instead of a recurring subscription.

StemPlayer's answer

Moises and LALAL.AI are subscriptions and cap free use hard; Ultimate Vocal Remover is free but needs installing and a good graphics card. StemPlayer runs in any browser, on a laptop or a phone, is free while in beta, and is built for playing along rather than producing.

StemSplitterAI's answer:

A person should choose StemSplitterAI if they want a simple pay-per-use workflow for music practice, rehearsal, teaching, or karaoke. It offers a free 30-second preview, browser-based stem controls, downloadable stems, custom backing track export, and credit packs that do not expire. There is no monthly plan to keep active when the product is not being used.

StemPlayer's answer

Musicians who learn and practise songs by ear: guitarists, bass players and drummers who want to play their part with the real band, singers who need an instrumental, and teachers preparing play-along tracks for students.

StemSplitterAI's answer:

The primary audience is musicians and music learners who need custom backing tracks from uploaded audio. This includes singers making vocal-free tracks, drummers practicing with drumless versions, bass players creating bass backing tracks, teachers preparing lesson material, and bands rehearsing cover songs.

StemPlayer's answer

I am a gigging guitarist, and learning a part from a record always meant fighting the original guitar in the mix. Stem separation fixed that, but every tool either charged monthly, stopped at four stems, or dumped files I had to load into a DAW. I wanted to drop in a song, pull my part out and play. So I built StemPlayer for my own practice and opened it up for other musicians.

StemSplitterAI's answer:

StemSplitterAI was built to make custom backing tracks easier to create. Many musicians need a version of a song without one specific part, but pre-made backing tracks are often unavailable, low quality, or locked behind subscriptions. The product turns that workflow into a browser-based process: upload audio, preview the separation, adjust stems, and export the mix needed for practice or performance.