Why do professionals choose local AI?
Every question you ask ChatGPT, Claude, or Copilot is sent to servers in the US or Europe. Your documents, client names, financial data - everything travels across the internet. For professionals with confidential information, that's a risk. ThinkTower runs state-of-the-art open-source AI models 100% on your own computer - without internet connection.
Your data, your control
No data going to the cloud. No AI company analyzing your documents. No risk of data leaks. ThinkTower works completely offline.
GDPR compliant by design
No data processing agreement needed. No discussion about where data is stored. Perfect for healthcare, government, finance, and education.
No subscription, no vendor lock-in
One-time purchase, eternal ownership. No monthly costs that add up. No dependency on external services.
ThinkTower vs. Cloud AI
Why local AI is the safe choice
| Criteria | ThinkTower | ChatGPT / Claude | Microsoft Copilot |
|---|---|---|---|
| Where does your data go? | Stays on your computer | Servers in the US | Microsoft cloud* |
| Internet required? | No, fully offline | Yes, always online | Yes, always online |
| Internet search | No (maximum privacy) | Yes (context leaks) | Yes (context leaks) |
| GDPR | 100% compliant | Problematic | Processing agreement needed |
| Professional secrecy safe? | Yes | No | Doubtful |
| Cost | €245 (Early Access -30%) | €20+/month | €30+/month |
| Data used for AI training? | No, never | Possibly | Possibly |
| Telemetry / usage data | None** | Yes, extensive | Yes, extensive |
* Microsoft offers EU data processing, but certain AI features may be processed outside the EU.
** The Lite version includes limited telemetry. To keep improving ThinkTower, the Lite version collects limited, anonymous data: which features you use, error messages, and system info (OS, RAM). Your conversations and documents always remain 100% local on your own computer.
Built for professionals with confidential data
Lawyers
Analyze contracts and case files without breaching attorney-client privilege.
Accountants
Process financial statements and tax returns without leaking client data.
HR Professionals
Write job descriptions and analyze applications with complete privacy.
Management
Work on strategic documents and M&A analyses without competitors listening in.
Everything you need, completely offline
Smart Chat
Ask questions in your language and get clear answers. From brainstorming to problem-solving - ThinkTower is always ready.
- ✓Natural conversation
- ✓Context-aware: remembers previous messages
- ✓Works completely offline
Document Analysis
Upload PDFs, Word documents, or PowerPoints and let ThinkTower analyze the content. Summaries, answering questions, extracting key points.
- ✓PDF, DOCX, PPTX support
- ✓Automatic summarization
- ✓Q&A about documents
Data Analysis
Upload Excel or CSV files and ask questions in plain language. ThinkTower generates Python code that performs the calculation - no AI guesswork, but deterministic results.
- ✓Excel and CSV support
- ✓Deterministic Python/Pandas code
- ✓100% reproducible and verifiable
Professional Writing
Rewrite texts in the right tone. From informal to business, from vague to concrete.
- ✓Adjust tone (formal/informal)
- ✓Translations
- ✓Spelling and grammar
Full Traceability
Every action is logged. Every calculation can be traced. Perfect for compliance, audits, and quality control.
- ✓Step-by-step logging
- ✓Exportable to Excel
- ✓File integrity verification
Get started in 3 steps
Buy & Download
Choose your license and download the installer for Windows or macOS directly. Within minutes you'll have ThinkTower on your computer.
Install
Double-click the installer. ThinkTower automatically downloads the AI model that fits your computer (4-50 GB depending on your RAM).
Use
Open ThinkTower and start right away. Chat, upload documents, analyze data. Everything works offline - no internet needed anymore.
Founder's Edition
Available until v1.0 launch
Lite
Perfect to get started
- Unlimited chat
- 3 tool actions per day
- 30 days chat history
Lifetime
ThinkTower - Your on-device workmate
- Lifetime license
- All features unlimited
- No monthly costs