Fuel Strategy Calculator (ACC)4.6 - App Store

Fuel strategy done right for sim racing.

Pit Stop Calculator is a precision fuel strategy tool built for sim racers who want consistency, confidence, and control. Whether you’re racing short sprints or long endurance events, the app helps you calculate exactly how much fuel you need to finish the race without guesswork.

Designed for popular racing simulators such as iRacing, Assetto Corsa, Assetto Corsa Competizione, Assetto Corsa Evo, Le Mans Ultimate, and more.

Race Fuel Calculator
Plan your race strategy with accurate fuel calculations based on your real driving data.

Enter your average lap time, total race duration, and fuel burn rate per lap. The app calculates the exact amount of fuel needed to finish the race and automatically adds a safety buffer of 2 liters to ensure you cross the finish line without running dry. The results screen shows your one-lap pace, fuel consumption per lap, total race duration, and required fuel.

Endurance Calculator
Built for long-distance and endurance racing.

Enter your average lap time, maximum stint length, and fuel burn rate to instantly see how much fuel is required for each stint. Optimize pit stop timing and maximize your time on track during endurance events.

Racing Tips Widget
Stay sharp even when you’re not in the cockpit.

Add the Racing Tips widget to your home screen to receive professional racing tips and daily insights designed to help sim racers improve consistency, focus, and performance.

Designed for Sim Racers
The app focuses on speed, clarity, and usability.

It features a clean and intuitive interface, responsive haptic feedback on interactions, and an optional Dark Mode available via a “Say Thanks” support purchase, ideal for night racing sessions.

Supported Racing Simulators
iRacing
Assetto Corsa
Assetto Corsa Competizione
Assetto Corsa Evo
Le Mans Ultimate
Other racing simulators using lap-based fuel consumption

No spreadsheets. No guessing. No last-lap fuel panic.
Just accurate calculations and smarter race strategy.

Drive smart, fuel right, and finish strong with Pit Stop Calculator.

Version History WHAT'S NEW IN 4.6

GARAGE / PRESETS
Save your race setups as reusable presets — per sim (ACC, AC, ACE, LMU, iRacing), per car, per track. Tap a preset to load it instantly into the calculator. Free: 1 slot. Pro: unlimited.

NEW TIP OPTIONS
Support development with three new tip sizes — small, medium, or large. Pick what feels right.

PRO LIFETIME LAUNCH OFFER
Get Pro Lifetime at 50% off for your first 14 days. Includes unlimited race history, Live Activity pit reminders, endurance mode, and unlimited preset garage.

Plus various improvements and fixes.

Thanks for racing with us! 4.6 May 18 NEW IN 4.5

• Reuse any saved setup — swipe right on a History entry to load it back into Race or Endurance
• Swipe left to delete entries
• Racing stats on Home — total races, average fuel, time between sessions
• Live Activity reliability fixes — countdown now ticks correctly on Lock Screen and Dynamic Island
• Many small fixes and performance improvements

Thanks for supporting the app! 4.5 Apr 27 NEW IN 4.4

• Live Activity pit reminders — stint countdown on your Lock Screen and Dynamic Island
• Fresh Apple-native look — dark mode by default, amber accent, glass cards and smooth animations
• Inline results with smooth auto-scroll — no more modal sheets
• Redesigned Race screen with pit window timeline
• Now localized for 10 regions
• Many small fixes and performance improvements

Thanks for supporting the app! 4.4 Apr 24 Optimized app interface. 4.3 12/15/2025 Optimized button placement and keyboard toolbar with a convenient “Done” button for smoother input. 4.2 12/14/2025 The app interface has been completely rebuilt to make it much easier to use 4 06/03/2025 Updated the lap time data format to display minutes, seconds, and milliseconds, as requested by users.
Introduced a new widget that provides daily driving tips.
Enhanced user interaction with the addition of haptic feedback during calculations.
Implemented a feature allowing users to leave a tip for the developer.
Addressed and resolved multiple bugs to improve app performance and reliability. 2.6.1 01/31/2025 Updated the lap time data format to display minutes, seconds, and milliseconds as per user requests.
Added a new widget featuring daily driving tips.
Fixed several bugs to enhance app performance and reliability. 2.4 01/27/2025 I've fixed another few bugs in such a simple app. Shame on me. 2.2 04/22/2024 I've fixed a lot of bugs in such a simple app. Shame on me.
With this version:
- input fields are using a numeric keyboard
- tap on "calculate" button will hide keyboard
- burning rate containing decimal points has been restored 2.1 04/19/2024 Fixed small issue where some configurations could not work as expected 2.0 04/17/2024 Fixed an issue where the decimal symbol was not displayed correctly in certain system localizations.
Updated the code to dynamically handle different decimal symbols based on the user's system localization.
The app now properly recognizes commas (",") as the decimal separator in relevant input fields, ensuring consistent and accurate numeric input. 1.1 07/11/2023 1.0 07/11/2023