| Feature | B² Second Brain | Mem |
|---|---|---|
| Free Plan | ✗ No | ✗ No |
| Pricing | Paid only: Starter $49/user/month (up to 10 users), Growth $89/user/month (up to 50 users), Enterprise custom; annual billing saves about 15% | $14.99/mo |
| Rating | ★★★★☆ 4 | ★★★★☆ 4.1 |
| Key Feature 1 | Reads email, calendar, | Auto-organization |
| Key Feature 2 | Drafts the task | Knowledge-chat integration |
| Key Feature 3 | Learns from corrections: | Context-aware search |
Reach buyers comparing B² Second Brain and Mem. High-intent traffic, direct conversions.
B² Second Brain and Mem are rated almost identically by users (4 vs 4.1), so the right pick comes down to feature fit rather than overall quality. Neither tool has a free tier — B² Second Brain starts at Paid only: Starter $49/user/month (up to 10 users), Growth $89/user/month (up to 50 users), Enterprise custom; annual billing saves about 15% and Mem starts at $14.99/mo, so factor trial periods into your evaluation. B² Second Brain tends to be favoured by professional services and consulting, while Mem is more popular with remote-work and freelancers.
AI-native operating system for services firms that reads email, meetings and WhatsApp notes, filters the noise, and drafts the next task, CR… Read the full B² Second Brain review →
Mem is an AI-powered personal knowledge base that automatically organises your notes, captures information from various sources, and surface… Read the full Mem review →
• Triage is built to be reversible: the vendor says nothing is deleted, items are only demoted, and every action is audited
• Admins can see AI usage per user, agent and module, and edit spend caps and model overrides without a deploy
• The AI gateway fails over automatically across five providers (Anthropic, Google, OpenAI, DeepSeek and xAI)
• The pricing page offers no free plan or trial; each tier leads to a booked demo
• Starter is capped at 10 users and one AI teammate and Growth at 50 users, so larger teams need a custom Enterprise quote
• Effortless organization — Automatically sorts notes into contextual groups, saving time spent on manual tagging or filing.
• Robust search capabilities — Helps users quickly locate relevant notes using semantic and contextual criteria.
• Highly integrative — Works seamlessly with commonly used tools like email, calendars, and Slack for effective workflows.
• Offers a knowledge-focused chatbot — Allows users to query their notes conversationally, making it highly intuitive.
• No free plan — Requires upfront commitment to a $14.99 monthly subscription without a trial option.
• Limited team collaboration — Not ideal for users primarily seeking a tool for robust collaborative editing.