Drag Racing Weather & Dial-In

Your next dial, the air at your track and the jet or pill for today. Built for bracket racers, Jr. Dragster families, dirt oval teams and karters. RACE AIR THAT MATCHES YOUR STATION • Race density altitude (dry air, 60 °F, 29.92 inHg), compatible with RaceAir-type stations, plus aviation DA, always labeled. • Air density ratio (ADR), water grains per pound, vapor pressure, dew point, dry and absolute barometer, pressure altitude. • STD and SAE correction factors and relative horsepower. • From the iPhone barometer (with calibration), the nearest weather station, Apple Weather or your own numbers. A LOGBOOK THAT FILLS ITSELF • Snap the timeslip: R/T, 60', 330', 1/8, 1000', 1/4, MPH and dial are read on your iPhone and you confirm. • The air is saved with every pass — even for an older pass, from the hourly weather at the track. • Vehicles and setups, notes, marks for tire spin or lifting, CSV export and iCloud sync. YOUR NEXT DIAL, WITH ITS MARGIN • From your last good pass corrected for the air, or — after a few passes — a line learned from your own car, with an 80 % window and a grade. • See how it’s calculated: passes used, seconds per 100 ft of DA and the chart. • Throttle stop timer for your index, standard-day ET and MPH, run completer, gear, trap rpm and converter slip. PLAN THE DAY • Hour by hour at 480 drag strips, dirt ovals and kart tracks: race DA, ADR, predicted ET and the jet or pill for each hour. • Best and worst air, and when the jet changes. • Widgets, Lock Screen, Apple Watch and a big reading for the staging lanes. JETS, PILLS AND METHANOL — INCLUDED • Fuel change since your baseline, for any fuel system (EFI too). • Holley-style, Quick Fuel, alcohol and drilled jets, Mikuni, Keihin, and Edelbrock AVS jet-and-rod combinations, primary and secondary. • Mechanical injection: main bypass pill by nozzle and pill area, high-speed bypass and rail pressure change. • Methanol hydrometer: expected specific gravity, water estimate and when to drain it. • Learns from your engine: plugs, EGT and feel from each session suggest a better baseline. It never changes anything on its own. ONE PRICE No subscription and no account. Your logbook stays on your device and in your own iCloud. Every jet and pill change is a starting point from your own baseline. A lean engine breaks: watch plugs, EGT and A/F after any change, and when in doubt, go rich. Trademarks belong to their owners. This app is not affiliated with Holley, Demon, Quick Fuel, Barry Grant, Edelbrock, Kinsler, Hilborn, Enderle, Mikuni, Keihin, NHRA, IHRA, IMCA, Computech or Altronics.