Great App
Can be used local on device. Has amazing tools for fuel work.
Free
In-App Purchases
About
This tool simplifies fuel system measurements for technicians. It offers accurate drop tube calculations, supports precise fill levels, and provides a reference for dispenser error codes. Streamline your work and ensure regulatory compliance in the field.
✓Accurate drop tube length calculations
✓95% fill level support
✓Tank volume chart builder
✓Dispenser error code reference
✓User-friendly field interface
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What's New in DropTubeBuilder
1.2.1
August 10, 2026
Franklin cut math corrected The Franklin Defender calculation now matches Franklin's own official calculator exactly. If you used the app for a Franklin cut before this update, your numbers will change. EMCO was checked against EMCO's published worksheet and confirmed correct as it stood. Both now show the manufacturer worksheet notes under the result, so you can see which method produced the number. NEW: PUMP CONTROLLERS Fault codes, status codes, DIP switch settings and calibration notes for FE Petro MagVFC and Guardian SPGC 220. MORE ATG ALARMS Franklin EVO 550 and EVO 5000 alarms added, 97 entries. TAP ANY ERROR CODE FOR THE FULL DETAIL Codes now open to the likely causes and the troubleshooting steps, instead of just the alarm text. TANK CHART PDF EXPORT Export a tank chart as a PDF. Every PDF now shares with a proper file name instead of a generic one. Also: entitlement checks hardened, with a readout in Diagnostics if you ever need to see why access is not showing.
MoreSubscription plans
DropTubeBuilder Pro monthly
Unlock Pro Tools for Fuel Technicians!
$4.991 Month
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FAQ
What is DropTubeBuilder used for?
DropTubeBuilder is a utility app designed for fuel system technicians. It helps with accurate measurements for overfill drop tubes and provides quick diagnostics for dispenser errors, ensuring compliance and efficiency.
Does DropTubeBuilder have ads?
No, DropTubeBuilder does not contain advertisements. The app is free to download and use, with optional in-app purchases for advanced features.
What are the subscription options for DropTubeBuilder Pro?
DropTubeBuilder Pro offers a monthly subscription for $4.99/P1M and an annual subscription for $24.99/P1Y. The annual plan includes a 3-day free trial.
How accurate are the drop tube calculations in DropTubeBuilder?
The app provides precise drop tube length calculations based on simple input measurements, ensuring overfill valves sit exactly at the regulatory 95% fill level.
What dispenser brands does DropTubeBuilder support for error codes?
DropTubeBuilder includes a reference for dispenser error codes for both Gilbarco and Wayne dispensers, offering possible causes and troubleshooting steps.
On what devices can I use DropTubeBuilder?
DropTubeBuilder is available for use on iPhones and iPads, making it a versatile tool for technicians in the field.
How often is DropTubeBuilder updated?
The latest version, 1.1.7, was released on January 26, 2026. Updates are provided to ensure the app remains reliable and current with industry needs.
What is the age rating for DropTubeBuilder?
DropTubeBuilder has an age rating of 4+, making it suitable for a wide range of users. This indicates it contains no mature content.
