Pick Mem if
solo knowledge workers who will live in one Mem inbox and pay when the 25-message Free cap bites.
Read the Mem pageMem vs Obsidian
Our take
Pick Mem if solo knowledge workers who will live in one Mem inbox and pay when the 25-message Free cap bites. Pick Obsidian if individual writers who will stay on the $0 app while they open a first Bases table, then Sync at $4/user/month yearly ($5 monthly) when they want encrypted vaults on other devices. Skip Mem if teams that need a shared workspace wiki (Notion AI) or a meeting recorder first (Otter.ai).
Mem
**notes app
Best for
Mem Dump notes and ask Mem to file them
Obsidian A vault table you start at a public $
Free plan
Mem $0 · 25 messages; 25 new notes; tracking on 25 notes; 15 open tasks/projects; 3 hours Voice Mode
Obsidian $0 · no sign-up. No strings attached
Lowest paid
Mem Mem Plus $9
Obsidian Sync $4/user/mo yearly
Next step up
Mem Mem Pro $29
Obsidian Publish $8/mo yearly
Watch out
Mem Free is 25 messages and 25 notes
Obsidian The $0 tile is the local app
Last checked
Mem 2026-10-20 · get.mem.ai/pricing
Obsidian 2026-10-23 · obsidian.md/pricing
Which one, then?
Pick Obsidian if
individual writers who will stay on the $0 app while they open a first Bases table, then Sync at $4/user/month yearly ($5 monthly) when they want encrypted vaults on other devices.
Read the Obsidian page