Mem vs Obsidian——どっちが優秀？
Memを選ぶべき人: ノートを手動で整理するのが嫌いで、AIに自動で適切な情報を出してほしい人
Obsidianを選ぶべき人: 自分のデータを自分で持ちたい、パーソナルなナレッジグラフを作りたいパワーユーザーや開発者向け
私たちの見解: Mem is easier to pick up, but Obsidian is more powerful long-term.
| Mem | Obsidian | |
|---|---|---|
| 料金 | Free tier with limited AI | Mem Plus $14.99/mo | Free for personal use | Commercial $50/user/year |
| 機能 | AI-powered search and organization, Automatic note connections, Smart collections, Meeting note capture, Chat with your notes | Local-first markdown files, Bidirectional linking, Graph view, Plugin ecosystem (1000+), Full offline support |
| こんな人に最適 | People who hate organizing notes manually and want AI to surface the right information automatically | Power users and developers who want to own their data and build a personal knowledge graph |
| 学習コスト | 簡単 | 難しい |
本当の違い
Both offer free tiers, so the real question is what you get when you start paying.
Mem stands out with AI-powered search and organization and Automatic note connections. Obsidian counters with Local-first markdown files and Bidirectional linking.
Mem's Achilles heel: ai magic is hit-or-miss — sometimes surfaces gold, sometimes nonsense, and you lose control over structure. Obsidian's: no real-time collaboration — syncing across devices requires paid add-on or diy solution. Pick whichever weakness you can live with.
結論
If you value ai-powered search and organization and ノートを手動で整理するのが嫌いで、aiに自動で適切な情報を出してほしい人, go with Mem. If 自分のデータを自分で持ちたい、パーソナルなナレッジグラフを作りたいパワーユーザーや開発者向け matters more, Obsidian is your pick. Neither is a bad choice — but one will fit your workflow better.