Your personal knowledge assistant
Curated expert knowledge for your exam — accessible via Claude,
anytime and always up to date.
Pick the right subject area: exam prep, tax law, IT law, or the general library.
Enter your personal token once in Claude Desktop. That's it — no setup, no technical hassle.
Ask Claude questions directly from your brain. Search, summarize, explain — based on curated expert knowledge.
Each brain contains curated, verified expert knowledge — no generic AI hallucinations.
All exam topics for German tax office clerks: bookkeeping, payroll tax, social security law.
New ✦GDPR, software licenses, contract law for digital products and SaaS providers.
Income tax, VAT, trade tax — for studies, training, and professional practice in Germany.
General knowledge library: nutritional science, TCM, health, and preventive medicine.
Fair question. Here's the difference.
Claude doesn't reliably know the 2026 contribution limits. Our Brain is updated every January 1st with the official figures.
Tax law is everywhere online. What actually appeared in your IHK exam — we have that.
No isolated lookups. Every concept is linked to exam context and practice questions.
| Question | Claude alone | Brain + Claude |
|---|---|---|
| What is the BBG 2026? | Guesses or gives 2025 value | €5,812.50/mo — verified ✓ |
| What is the JAEG 2026? | Uncertain (training cutoff Aug 2025) | €77,400 — verified ✓ |
| Which IHK topics will appear? | Generic, not exam-specific | Real IHK questions ✓ |
| Explain §19a EStG | ✓ can do it | ✓ + exam context ✓ |
| Is the formula current? | Often right, sometimes outdated | Always current ✓ |
Brain is updated annually — next update: January 1, 2027
Cancel anytime. No annual contract. Instant access.
Read, search, and ask AI questions.
Read + personal notes + learning progress.
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