Open Engine Data Viewer
A free desktop app for viewing JPI engine monitor data. View charts, export to CSV, and analyze your flights — completely offline.
Works completely offline — your data stays on your computer
Everything You Need
Powerful features, simple interface
Interactive Charts
EGT and CHT charts with drag-to-zoom. Add overlay series like RPM, fuel flow, and more.
GPS Flight Map
See your flight path on an interactive map with takeoff and landing markers.
CSV Export
Export individual flights or all flights at once as a ZIP archive.
Custom Charts
Build your own chart with any combination of parameters to analyze.
Dark Mode
Easy on the eyes with automatic dark/light theme switching.
Works Offline
No internet required. Your data never leaves your computer.
Download
Available for macOS, Windows, and Linux
macOS
Linux
Want to Do More with Your Data?
OED Viewer is great for quick analysis, but OpenEngineData.org gives you so much more.