BastionChat
Revolutionary local AI with tool calling, agentic workflow, and visual document analysis. Complete privacy, no cloud, no tracking.
Introducing BastionChat
The Ultimate Privacy-First AI Experience
BastionChat revolutionizes AI interaction with groundbreaking capabilities like tool calling, agentic workflow, and visual document analysis - all running locally on your device. Experience AI that can think, plan, and execute complex tasks while maintaining complete privacy and control over your data.
All processing happens on your device
Tool calling, agentic workflow, and visual analysis
Works seamlessly on iPhone, iPad, and Mac
See BastionChat in action - Live demo
Powerful Features
🏠 100% Local Processing
BastionChat runs entirely on your device using advanced local language models. Your conversations never leave your computer, ensuring complete privacy and eliminating any concerns about data collection or surveillance.
- No internet connection required for AI chat
- Zero data collection or tracking
- Complete conversation privacy
- Works offline anywhere
🧠 Advanced AI Capabilities
BastionChat features cutting-edge AI capabilities powered by the latest models including Gemma 3 and Qwen 3 (thinking) models, delivering exceptional performance for complex reasoning tasks.
Advanced Features
BastionChat's advanced RAG system in action
🧠 Revolutionary AI Capabilities
BastionChat now features groundbreaking AI capabilities that set it apart from all competitors. Experience true agentic workflow with tool calling, visual document analysis, and intelligent multi-step reasoning - all running locally on your device.
Your AI can perform actions like document search, calculations, and knowledge base management using intelligent tools.
Transform documents into visual insights with advanced term frequency analysis and natural language processing.
AI that can think, plan, and execute complex tasks using multi-step reasoning and tool integration.
Choose between Agentic Search with thinking models or fast Quick Search with traditional RAG.
MCP integration and tool calling capabilities in action
🔌 Model Context Protocol (MCP) Integration
BastionChat now supports the Model Context Protocol, enabling seamless integration with external tools, APIs, and services while maintaining complete privacy. This revolutionary capability transforms BastionChat from a simple chat app into a complete AI agent platform.
Connect to web APIs, databases, and external services through the open MCP standard.
AI can use multiple external tools in complex workflows with intelligent orchestration.
All external connections maintain local processing principles and user privacy.
Enable, disable, and configure external tools in real-time without app restart.
MCP integration showing external tool connections and protocol-based architecture
📚 Search Across Documents
BastionChat's new Search Across Documents feature revolutionizes how you interact with your knowledge base. Choose between intelligent Agentic Search with thinking models or fast Quick Search with traditional RAG, all while maintaining complete privacy and local processing.
Intelligent search using thinking models like Qwen3 with multi-step reasoning and document analysis.
Fast traditional RAG search available for all model types with instant results.
Search within specific documents or across your entire knowledge base with flexible scope control.
Get detailed search results with document citations, relevance scores, and intelligent summaries.
Agentic Search in action showing thinking process, document analysis, and intelligent results
📚 Advanced Model Management
BastionChat features a sophisticated model management system with support for GGUF model formats, dynamic downloading, and intelligent model discovery.
Curated collection of optimized models for different use cases
Switch between models seamlessly based on your needs
Multiple quantization levels for optimal performance
Automatically finds and manages locally available models
Easy model management and selection interface
🚀 Quick Start Experience
Get started with BastionChat in seconds. Our intuitive onboarding process guides you through setting up your first AI model and having your first conversation - no technical knowledge required.
Download and configure your first AI model with a single tap
Interactive walkthrough of all major features and capabilities
Pre-configured settings optimized for the best user experience
Contextual tips and assistance throughout your journey
Getting started is simple and intuitive
📄 Intelligent Document Summarization
Transform lengthy documents into concise, actionable insights. BastionChat's advanced summarization engine extracts key points, highlights important information, and creates structured summaries tailored to your needs.
Process PDFs, web pages, text files, and more with ease
Get organized summaries with key points, action items, and highlights
Choose from brief overviews to detailed analysis
Maintain references to source material for verification
Intelligent document analysis and summarization
Available Models
Choose from our curated selection of optimized AI models
| Model Name | Family | Size | Quantization | Context | Capabilities | Tool Support | Status |
|---|---|---|---|---|---|---|---|
| Hermes-3-Llama-3.2-3B | Llama | 2.02 GB | Q4_K_M | 4K | Advanced Reasoning | ⚠️ Limited | ⭐ Suggested |
| Llama-3.2-1B-Instruct | Llama | 0.81 GB | Q4_K_M | 4K | Instruction Tuned | ⚠️ Limited | ⭐ Suggested |
| Qwen3-1.7B-UD | Qwen | 1.61 GB | Q6_K_XL | 32K | Deep ReasoningMultilingual | ✅ Full Tool Support | Available |
| Qwen3-4B-UD | Qwen | 2.13 GB | Q3_K_XL | 32K | Deep ReasoningMultilingual | ✅ Full Tool Support | Available |
| Qwen2.5-0.5B | Qwen | 0.49 GB | Q5_K_M | 32K | MultilingualCompact | ⚠️ Limited | ⭐ Suggested |
| Phi-4-mini-instruct | Phi | 2.12 GB | Q3_K_M | 4K | CodingMath | ⚠️ Limited | Available |
| Llama-3.2-3B-Instruct | Llama | 2.02 GB | Q4_K_M | 8K | Instruction TunedReasoning | ⚠️ Limited | Downloading |
| Gemma-3-4B-Instruct | Gemma | 2.49 GB | Q4_K_M | 128K | MultimodalVision | ⚠️ Limited | Available |
| LLaVA-Phi-3-mini | Phi | 2.32 GB | INT4 | 4K | MultimodalVision | ⚠️ Limited | ⭐ Suggested |
Technical Specifications
Core Engine
- Framework: Custom AI engine optimized for local processing
- Model Format: GGUF with multiple quantization levels
- Model Support: Gemma 3, Qwen 3 (thinking), and latest models
- Memory: Efficient memory management and caching
Features
- Chat Interface: Modern, intuitive conversation UI
- Voice Mode: Natural speech interaction capabilities
- Document RAG: Advanced indexing of PDF, web, and text files
- Document Summarization: Intelligent content extraction and analysis
- Model Parameter Customization: Control temperature, prompts, and AI settings
- Session Management: Persistent conversation history
- Tool Calling System: AI-powered actions and external tool integration
- Word Cloud Generation: Visual document analysis and term extraction
- Agentic Workflow: Multi-step reasoning with tool execution
- Enhanced Search Modes: Agent vs RAG search capabilities
Platform Support
- iPhone: iOS 15.0 or later
- iPad: iPadOS 15.0 or later
- Mac: macOS 12.0 or later
- Architecture: Apple Silicon optimized
- Storage: Variable (depends on selected models)
Tool System & Agentic Capabilities
- Built-in Tools: Document search, calculator, word cloud generation
- MCP Integration: Model Context Protocol for external tool connections
- Tool Management: Dynamic enabling/disabling without app restart
- Privacy-First: All tool execution maintains local processing principles
- Protocol Support: Full MCP standard compliance
- Agentic Workflow: Block-based message architecture for complex reasoning
- Visual Analysis: Word cloud generation with Natural Language Processing
- Enhanced Search: Agentic Search with thinking models and Quick Search with traditional RAG
- Search Across Documents: New feature to search within or across selected documents
- Model-Specific Intelligence: Automatic tool availability based on model capabilities
Security & Privacy
- Data Processing: 100% local, no cloud dependencies
- Network: Optional for model downloads only
- Privacy: Zero data collection or tracking
- Telemetry: No usage analytics or monitoring
🚀 Why BastionChat is Different
Complete AI Agent Platform - Not Just Another Chat App
Think and Reason
Multi-step reasoning with thinking tokens and complex problem-solving capabilities that go far beyond simple chat responses.
Execute Tools
Built-in tools for document search, calculations, and analysis, plus MCP integration for external tool connections.
Connect Externally
MCP integration enables connections to web APIs, databases, and external services while maintaining complete privacy.
Visual Analysis
Generate word clouds and visual document insights with advanced Natural Language Processing capabilities.
Agentic Workflows
Complete task execution with tool orchestration, multi-step planning, and intelligent workflow management.
Privacy-First
100% local processing with no cloud dependencies, ensuring your data never leaves your device.
🌟 Revolutionary AI Platform
While other apps offer basic chat, BastionChat provides a complete AI agent platform with tool calling, MCP integration, agentic workflows, and visual analysis - all running locally on your device. Experience the future of AI interaction with complete privacy and control.
Privacy & Transparency
100% Private by Design
Zero data collection. All processing happens locally on your device. Your conversations, documents, and personal data never leave your device.
Complete Transparency
Full disclosure of all open-source libraries, AI model licenses, and third-party dependencies used in Bastion Chat.
License Compliance
Comprehensive documentation of all model licenses and usage terms to ensure full legal compliance.
For complete details about our privacy practices, data handling, and all third-party acknowledgments:
View Complete Privacy Policy & Acknowledgments →Download BastionChat
Available on iPhone, iPad, and Mac