What is COMPASS for EVE Online?

COMPASS is a free logistics tool for EVE Online that helps capital ship pilots plan jump routes, assign cyno alts to destinations, and coordinate multi-freighter fleet movements. It uses real game data from the EVE SDE and ESI to calculate accurate travel times, fuel costs, and fatigue timers.

How does COMPASS calculate travel time in EVE Online?

COMPASS uses real CCP warp physics (3-phase model: acceleration, cruise, deceleration) with actual gate XYZ coordinates from the SDE. Align time is calculated from ship mass and inertia using ceil(ln(2) x inertia x mass / 500,000). Each gate jump includes 20 seconds overhead (session change, gate animation, grid load, approach). Skills and fitting modules modify these calculations with proper stacking penalties.

Can I use COMPASS without logging in?

Yes. Gate Planner, Jump Planner, and the Dossier intelligence system all work without EVE SSO login. Connecting your EVE account unlocks Cyno Finder (optimal cyno alt assignment), Fleet Planner, character management, and personalized watchlists with real-time gank notifications.

What is the COMPASS Dossier system?

The Dossier is a criminal intelligence database that profiles gankers from zKillboard data. It shows behavioral analysis (fleet commander, solo ganker, pipe camper), activity heatmaps by hour and day, hunting grounds, fleet associates, victim analysis, and an "active right now" probability based on historical patterns.

How does the COMPASS watchlist work?

You can watch up to 5 systems and 5 ganker pilots. When a gank happens in a watched system or a watched ganker gets a kill, you receive an instant push notification via Supabase Realtime. Alerts show in the notification bell with victim details, ISK value, and a link to the zKillboard killmail.

Dev DiaryMay 1, 2026 5 min

Building COMPASS in Public — Dev Diary #1

Why we started COMPASS, the first month of development, and what we learned about building tools for EVE Online haulers.

COMPASS started as a personal frustration. Managing 12 cyno alts across New Eden, manually checking who's where, which clone to use, whether someone has fuel — it's a spreadsheet nightmare. So we built a tool. Then it grew.

Days of Dev

Major Features

8,490

Systems Indexed

415

Ships Seeded

Month 1: The Core Problem

The first version was just a cyno finder — search destinations, see which alt is closest. But "closest" by jump count is wrong (see Why Time Matters). So we rebuilt the scoring to use real travel time. That meant we needed ship stats, warp distances, gate positions — the entire SDE.

What Went Right

Time-based scoring from day one

Every decision in COMPASS is denominated in seconds, not jumps. This made the DP solver naturally produce better results than greedy assignment.

Real SDE data

Downloading and parsing the official EVE Static Data Export was a two-day effort that paid for itself immediately. Real gate distances, real ship stats, real station positions.

Public-first architecture

Making the tools work without login (optionalAuth middleware) meant we could share results and attract users before asking for EVE SSO commitment.

What Went Wrong

ESI rate limits hit hard

Our first location update tried to update all 12 characters simultaneously. CCP's ESI rate limiter was not amused. We added concurrency limits and caching.

Clone data never refreshed

For two weeks, clone data only loaded on login. New jump clones installed in-game never appeared in COMPASS until the user logged out and back in. Fixed in v1.2.3.

Two separate UIs

The public landing page and the logged-in app were built with completely different CSS systems. This caused cognitive whiplash when switching between them. Fixed in v2.0.

What's Next

The real-time watchlist system is live. Corp courier management is on the horizon — imagine PushX's internal tools, but for everyone. We're also exploring system intel pages, shareable route results, and deeper ESI integration for fitting detection.

If you're using COMPASS, we'd love to hear from you. What's missing? What's broken? What would make your hauling life easier?