Erich Champion

Projects

Books and apps I've written and released

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Sessions-AI

On-device AI chat with MCP server integration. Privacy-focused AI conversations powered by local models with seamless server connectivity.

App StoreGitHub
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ElectroSpotmatic

Professional RAW/ProRAW camera app for iOS. Advanced controls for serious photographers who need manual override and high-quality output.

App StoreGitHub
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Sell in May

Market analysis app with LSTM forecasting using llama.cpp. Historical backtesting and prediction models for informed investment decisions.

App StoreGitHub
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Aperio Ephemeris

Astronomical ephemeris app for tracking celestial events, planetary positions, and astronomical phenomena with precision calculations.

App StoreGitHub
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FriendlyFediverse

React Native Mastodon client for the Fediverse. Connect with Mastodon servers seamlessly with a polished mobile experience.

App StoreGitHub
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Defroster

Open-source ICE activity reporting tool. Generate comprehensive reports on ICE (In-Case of Emergency) activities for fleet management.

GitHub
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Building AI Coding Assistants

A comprehensive guide to building AI coding assistants, from architecture to implementation. Covers LLM integration, tool use, and production deployment.

View BookGitHub
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Inside Unsloth

Deep dive into how Unsloth, the fastest LLM fine-tuning library, works. Technical exploration of optimization techniques and architecture.

View BookGitHub
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Inside OpenCode

Technical breakdown of OpenCode, the AI coding agent built for the terminal. Architecture, implementation details, and extension points.

View BookGitHub