An platform for bands & music collabs to upload and discuss their music stems, with a convenient mixer console. Upload, mix, and discuss in real-time. Leave timed comments on the song or on tracks, share securely, iterate.
Free plan: free forever!


STEM was born out of frustration. There are so many tools available for musicians to create music, but when it comes to collaboration, we often find ourselves sending files back and forth to each other (even entire projects), and struggling to make decisions.
Other projects tried to solve this by creating a DAW online where band members can collaborate, but having all the editing power (and distractions) of a full DAW online doesn't help with decision making - there are too many options and knobs.
So we thought: in a band, each member has a part (or parts) to play, meaning they contribute with tracks / stems. We realised that to solve these problems, what we really needed was a tool that limits our options, one that focuses on the commentary process, while forcing the band members to share full STEMS.
This is why we created STEM - a place that emphasises not the music creation itself (a real DAW is the correct place for that) but instead emphasises the commentary process, the decision making, and the ability to share with access control, to get external feedback in a controlled way.
With STEM, you define collaborators, place STEMS, discuss with comments on tracks, iterate on versions, and make decisions.
This is our mission - to be a tool that focuses on that last step: to make decisions together. No useless features clutter, no AI slop, no distractions.
We truly hope to make your decision making process easier with STEM.
The simplest app to test out your music stems remotely with your music team.
Upload and mix your song's audio stems using a large mixer console.
Like Figma, but for music. Invite band members to view or collaborate on projects in real-time.
Create timed comment threads on specific tracks or on the master track to discuss track details or the song as a whole.
Generate secure share links with customizable permissions. Share publicly or keep private to band members.
Join thousands of musicians and producers who are already using STEM to create amazing music together.