Sauna vs Mem
Mem organizes your notes. Sauna does your work.
Mem is a great second brain for your notes. Sauna is a coworker that acts on your work: it remembers your projects, connects to your tools, and finishes the task across every surface, not just recalls what you wrote.
Comparing Sauna and Mem? Mem is a self-organizing AI notes app and second brain. Sauna is the coworker that remembers your work and acts on it — connecting to your tools and doing the task across web, Slack, email, and iMessage.
Mem is a self-organizing AI notes app — a second brain that auto-links and surfaces your notes by meaning rather than folders, relaunched as Mem 2.0 in 2025. It raised a $23.5M Series A led by the OpenAI Startup Fund in 2022.
The difference: A self-organizing notebook, versus a coworker that takes the next step.
See why teams choose Sauna over Mem.
Get started for freeWhy Sauna
Built around your work.
Action
Beyond the note
Sauna remembers your work too, then does the task — the draft, the ticket, the reply — instead of just surfacing what you wrote down.
Connected
Your whole stack
It connects the tools your team runs, so its memory is your real work, not only the notes you remember to capture.
Everywhere
Every surface
Web, iMessage, Slack, email, and Superhuman, shared with your team.
In context
It knows your work, and acts on it.
Sauna remembers your projects and the people in them, connects to the tools your team runs, and finishes the task — across the web app, Slack, email, iMessage, and Superhuman.
Good to know
Questions, answered.
Is Sauna a note-taking app like Mem?
No. Mem organizes your notes into a second brain. Sauna remembers your work and acts on it — drafting, filing, replying — across your tools. Its memory comes from your real work, not only what you capture.
Does Sauna remember things across sessions?
Yes. Workspace notes hold what should stay true and session memory holds what's been said, so it isn't starting cold each morning.
Is my data safe?
Sauna reads only what you connect, and acts only after you approve. Your workspace and its memory are yours, not training data.
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Sauna vs the alternatives
See why teams pick Sauna over Mem.
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