DragCalc

DragCalc

Drag Racing Calculator

1 ratings
1 review
Free
With Ads

Details

  • Released
  • Updated
  • February 4, 2026
  • June 24, 2026

Features

DragCalc screenshot #1 for iPhone
DragCalc screenshot #2 for iPhone
DragCalc screenshot #3 for iPhone
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About

This app predicts drag racing performance metrics like quarter-mile times and trap speeds using a physics-based simulation. It allows users to input car specifications, compare different builds, and analyze real-world runs.

AI-powered car input
Quarter & Eighth Mile ET/trap speed predictions
Side-by-side car build comparison
Slope correction for track grade
Analysis of imported run data
Cloud sync for presets
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What's New in DragCalc

1.1

June 24, 2026

• Fixed an issue that could prevent calculations from loading • Smarter AI vehicle recognition and timeslip reading • Performance and stability improvements

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User reviews

It’s ok, has bugs

I downloaded this to play with final drive ratios given custom gear ratios, but it fails to update the analysis when I change the final drive ratio. It only works when I change transmissions from the drop-down, but now when I change the ratios in a custom transmission.

Developer apps

FAQ

What is DragCalc?

DragCalc is a drag racing performance calculator that uses a physics-based simulation to predict quarter-mile times, trap speeds, and acceleration metrics. It helps users understand how different car builds will perform on the track.

How does DragCalc predict performance?

It utilizes a detailed physics engine that considers real tire compounds, surface grip modeling, drivetrain losses, and transmission efficiency to provide accurate predictions.

Can I compare different car builds with DragCalc?

Yes, DragCalc allows you to race up to 4 cars side-by-side with animated simulations, enabling direct comparison of different build configurations.

Does DragCalc have ads?

Yes, DragCalc contains advertisements. As a free application, it relies on ads to support its development and operation.

What devices does DragCalc support?

Currently, DragCalc is supported on iPhone devices. It is designed to run on iOS.

How accurate are DragCalc's predictions?

The app uses physics-based simulation with detailed modeling of tires, grip, and drivetrain to offer accurate ET and trap speed predictions for drag racing.

Can I analyze my own drag runs with DragCalc?

Yes, you can import Dragy CSV files or timeslips directly into DragCalc to analyze your past runs and compare them with predicted performance.

What is the age rating for DragCalc?

DragCalc has an age rating of 4+, making it suitable for a wide range of users interested in drag racing simulations.