Know your air.
Predict your power.

HPDash Racing Density Altitude gives racers live DA, air density, and SAE-corrected horsepower — straight from your phone at the track.

• ✔  Live DA from your phone’s barometer — or station weather corrected to your elevation
• ✔  SAE J1349 correction factor + expected HP from your baseline
• ✔  Air density, dry air pressure, grains of water — imperial and metric
• ✔  No account. No setup. Open it and read the air.

Free with ads · Premium $2.99/yr removes ads + auto-refreshes weather.
US weather data (NWS) — available in the United States. For recreational use — not for aviation or navigation.
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