DiffSense

Product Introduction

1. Definition: DiffSense is an open-source CLI tool that generates git commit messages using Apple's native AFM 3B model on Apple Silicon. It operates within the technical category of AI-powered developer productivity tools.
2. Core Value Proposition: DiffSense eliminates manual commit message drafting by automating message generation with privacy-first, zero-latency AI processing directly on-device. It solves workflow friction for developers prioritizing code security and efficiency.

Main Features

1. On-Device AI Processing:

   • How it works: Leverages Apple Silicon's Neural Engine via the AFM 3B model to analyze git diff outputs locally.
   • Technology: Native integration with Apple’s ML frameworks (Core ML) ensures zero data leakage and sub-second inference.

2. Customizable Message Styles:

   • How it works: Users select from preset templates (minimal, verbose) or inject custom rules via .diffsenserc configuration files.
   • Technical Spec: Supports regex-based pattern matching for context-aware message structuring (e.g., JIRA ticket auto-inclusion).

3. Alias Macros Engine:

   • How it works: Embeds git commands directly into aliases (e.g., diffsense = !git add . && diffsense && git commit -m).
   • Use Case: Automates full commit workflows—prepending git add or appending git push—reducing CLI steps.

4. Multi-Model Flexibility:

   • How it works: Toggles between local AFM 3B, Private Cloud Compute (PCC), or OpenAI’s ChatGPT via --model flag.
   • Technical Edge: PCC mode uses Apple’s encrypted sandboxing for sensitive projects requiring cloud-scale AI.

Problems Solved

1. Pain Point: Manual commit messaging slows development cycles and introduces inconsistencies.

   • Keyword Focus: Solves commit message fatigue, context-switching delays, and human-error gaps.

2. Target Audience:

   • Apple Silicon developers prioritizing data privacy (e.g., fintech, healthcare engineers).
   • Teams enforcing semantic commit conventions (Angular/Conventional Commits users).
   • Solo developers handling monorepos needing rapid, consistent messaging.

3. Use Cases:

   • Generating compliant messages for regulatory projects where code must never leave local devices.
   • Enforcing team style guides via shareable configs in monorepos.
   • CI/CD pipelines using --nopopup for headless commit automation.

Unique Advantages

1. Differentiation:

   • Vs. cloud tools (like OpenAI’s ChatGPT): No API costs, zero data transmission, and offline functionality.
   • Vs. generic commit helpers: Apple Silicon optimization enables 10x faster inference than Rosetta 2 emulation.

2. Key Innovation:

   • AFM 3B Integration: First git tool natively leveraging Apple’s on-device model for hardware-accelerated privacy.
   • Alias-Driven Automation: Unique macro system merges git commands into single workflows, unlike fragmented competitors.

Frequently Asked Questions (FAQ)

1. Does DiffSense work without Apple Silicon?
   No. DiffSense requires Apple Silicon (M1/M2/M3 chips) to leverage the Neural Engine for local AFM 3B inference.

2. How does DiffSense ensure code privacy?
   All processing occurs on-device via Apple’s encrypted memory partitions. Cloud models (PCC/ChatGPT) are opt-in only.

3. Can I customize commit message formats?
   Yes. Define templates in .diffsenserc using syntax rules (e.g., {type}: {summary}) or adopt preset styles (minimal/verbose).

4. Is DiffSense compatible with existing git aliases?
   Yes. Its macro engine extends existing aliases—e.g., ds = !diffsense --nopopup && git push automates commits + pushes.

5. What’s the cost for using DiffSense?
   DiffSense is 100% free and open-source (MIT license). No subscriptions, tokens, or usage limits.