Quick answer
Tana is the genuine winner if you want an AI second brain. Mem is excellent for solo journaling and personal knowledge management but the team is small and pace has slowed. Notion AI is fine as an upgrade for existing Notion users but isn't the strongest standalone.
I used all three as my primary note app for two weeks each. Same workflow: meeting notes, daily journal, research clipping, project planning. Here are the honest results.
Tana — most powerful, steepest learning curve
Tana's "supertags" concept is genuinely new. Every note can be a database row. Every meeting is a node connected to its attendees and projects. The AI features (auto-tag, generate summaries, suggest connections) compound the structural power. Two weeks in I was finding connections I'd forgotten about.
- Wins: best structural model, AI features compound with use, active dev team
- Loses: steepest learning curve of the three, mobile app still weak
- Pricing: free, Plus $10/mo, Pro $14/mo
Mem — best for solo journaling
Mem launched the original "AI-native notes" idea and is still my favourite for personal journaling. Effortless to capture, fast search, AI auto-tags. Loses to Tana for project work, but for daily reflection it's smoother. Concern: hiring pace has slowed; development is less aggressive than Tana.
- Wins: cleanest capture flow, best mobile app, great for solo use
- Loses: weak for team work, dev pace has slowed
- Pricing: free, Mem X $10/mo
Notion AI — best if you already use Notion
Notion AI is fine. Add-on to your existing Notion. AI write, AI summarise, Q&A across pages. None of these features are best-in-class — but if you already pay for Notion, adding AI for $10/mo is the least friction option.
- Wins: integrates with existing Notion workspace, team features baked in
- Loses: AI features feel bolted-on, not native
- Pricing: $10/mo add-on to Notion Plus ($10/mo) — so $20/mo total
Recommendations by use case
- Second-brain enthusiast: Tana
- Daily journaller: Mem
- Team workspace + light AI: Notion AI
- PhD researcher: Tana
- Knowledge worker who lives on mobile: Mem
If you're still using plain Apple Notes or Google Keep, the upgrade to Mem or Tana is one of the highest-leverage productivity moves available in 2026. AI-native notes are genuinely different.
Related reading
Bottom line
Tana wins overall in 2026. Mem for solo. Notion AI as the easy upgrade if you're already in Notion. Stop using dumb notes apps — AI-native is genuinely better.
