See exactly how you use
AI coding assistants.
Local-first analytics for VS Code Copilot and Visual Studio Copilot. No cloud, no accounts, no behavior change — just the data already on your machine.
You can't improve what you don't measure.
Developers estimate they work 20% faster with AI — but controlled studies show the opposite.
METR, 2025The average developer juggles multiple AI coding assistants with no unified view of impact.
JetBrains, 2025Most engineering orgs are spending on AI tooling without any data on what's working.
Jellyfish, 2025Adoption is near-universal. Measurement is not. The gap between spend and insight is growing.
Jellyfish, 2025Everything in DiffDive
A complete local analytics tool built around the data your AI tools already generate.
Auto-discovery
Scans your machine and finds all AI assistant chat history automatically. No file paths to configure.
Session browser
Browse every conversation with full context — thinking blocks, tool calls, code diffs, and inserted code.
Model analytics
See which models you use, how often you switch, and how model usage shifts across projects over time.
Activity heatmap
Day-of-week by hour-of-day breakdown reveals your peak AI-assisted hours and usage patterns.
Workspace insights
Per-project breakdown of AI usage, session frequency, and interaction patterns across all your workspaces.
Code impact
Lines added and deleted, files edited, edit density per session. Understand where AI actually moves the needle.
Works offline
No internet connection required. No accounts. No telemetry. Operates entirely on your local machine.
Up and running in under a minute
No configuration, no accounts, no cloud. DiffDive finds your data automatically.
Download
Grab the DiffDive desktop app for Windows, or run it directly as a CLI tool with npx diff-dive.
~8.6MB. No install wizard. No account setup.
Launch
DiffDive scans your machine and auto-discovers AI assistant data from VS Code Copilot and Visual Studio Copilot.
No configuration. No file paths to set. It finds the data automatically.
Explore
Browse sessions, analyze model usage, inspect code diffs, and understand where AI actually makes a difference in your workflow.
All data stays local. The app works entirely offline.
Supported AI sources
DiffDive reads data your tools already generate. No new plugins, no behavior change.
Drop a message if your tool of choice isn't supported. Let us know.
Start free. Grow with your team.
Get started for free with DiffDive Lite. Scale with your needs.
DiffDive Lite
For individual developers who want to understand their AI workflow today.
- Local-only, fully offline
- Auto-discovery of AI chat history
- Full session browser with diffs
- Model usage analytics
- Workspace breakdown
- Activity heatmap
- Code impact tracking
- No accounts, no cloud, no telemetry
DiffDive Pro
Continuous tracking and richer data capture for developers who want deeper insights.
- Everything in Lite
- IDE extension for detailed tracking
- Higher fidelity session data
- Cloud history, access anywhere
- Advanced analytics and improvement suggestions
- Tailored AI feedback based on usage patterns
DiffDive Team
Aggregate insights across developers and workspaces for engineering leads.
- Everything in Pro
- Team-level aggregate analytics
- Share best practices across developers
- AI efficiency improvement insights
- Security warnings for AI code in critical modules
DiffDive Enterprise
ROI measurement, compliance, and DORA integration for engineering organizations.
- Everything in Team
- SSO and audit logs
- Compliance reporting
- Integration to GitHub PRs
- On-premise deployment option
- Dedicated support
Your data. Your machine. Full stop.
DiffDive doesn't phone home. There's no backend, no cloud storage, no telemetry. When you run DiffDive, every byte stays on your disk.
- Zero cloud, zero accounts.
No sign-up, no API keys, no subscription required to use the free tier. Download and run.
- No telemetry. Not even anonymous.
DiffDive does not track usage, errors, or feature interactions. There's nothing to opt out of.
- Auditable by design.
DiffDive makes no outbound network requests. You can verify this yourself with any network monitoring tool.
- This website has no tracking either.
No analytics scripts, no cookies, no fingerprinting. The site is fully static.
- No server requests
- No cookies
- No usage tracking
- No account required
- No data ever leaves your machine
Get notified when things ship
Download DiffDive Lite with no account. Leave your email if you want update notifications, join waitlist to Pro, or discuss DiffDive for Team or Enterprise.