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SPECIFICTION
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Comet vs Mem Agent

Comet

comet.md

Mem Agent

mem.ai

Side by side

FigureCometMem Agent
Price fromFree$9/mo
Free planYesYes
Free trial——
Open source——
Web—Yes
Windows—Yes
macOSYesYes
LinuxYes—
iOS—Yes
API—Yes
Plans published110
Spec score · AI Note-Taking Apps8.5 (#13)9.2 (#4)
Spec score · Note-taking apps7.8 (#144)9.3 (#9)
Free planYesYes
ProductComet is a Markdown note-taking app designed for local capture, encrypted syncing, and decentralized publishing.Mem describes itself as an AI thought partner that captures ideas, meetings, and research and helps users retrieve them when needed.

Plans

Comet

  • CometFree

Comet pricing →

Mem Agent

  • MemPriced on request
  • Mem Plus$9 a month
  • Mem Pro$29 a month
  • Mem Pro 2×$49 a month
  • Mem Pro 5×$99 a month
  • Mem Pro 10×$149 a month
  • Mem Pro 20×$199 a month
  • Extra Usage$50 a month
  • MemFree
  • Mem FreeFree

Mem Agent pricing →

In their own words

Comet

Comet has no write-up on Specifiction yet; its figures are above.

Visit comet.md

Mem Agent

Mem Agent is an AI thought partner for capturing ideas, meetings and research, then retrieving them when needed. Mem Chat can answer workspace questions, create or update notes, organize them and draft content using workspace context. Deep Search accepts natural-language descriptions of what a user wants to find. Voice Mode records and transcribes meetings or spoken thoughts into structured notes. The Chrome extension captures and summarizes webpages and YouTube videos, organizes clips into collections and lets users edit notes from its popup; it is currently available only for Google Chrome. Mem connects to Google Calendar and Microsoft Outlook, but only displays meetings with two or more guests. It can connect to Claude to search Mem knowledge, save conversations as notes, update documents and organize a workspace. The free plan includes 25 messages and 25 new notes per month, tracking for 25 notes, 15 open tasks and projects, and three Voice Mode hours. Mem Plus costs $9 a month. Content is encrypted in transit and at rest, but is unencrypted for AI processing by trusted third-party vendors. Mem supports one-click exports of notes and collections as Markdown files.

Visit mem.ai