Best apps like Flowbox: Plumber Toolkit

10+ similar apps compared and reviewed

4.4 avg rating

10 free apps

Updated October 2026

GABRIELE CHESI

Flowbox is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to Flowbox

PipeGrade: Pipe Slope Gauge by Linfeng He

Measure Fall, Grade & Drop

Editor's Choice

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

PipeGrade: Pipe Slope Gauge screenshot 1

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BaseCalc Plumbing Calculator by BASEMAPPED LLC

Pipe Sizing Calculator

Strong Contender

🔧 Utilities

5.0(1 ratings)

FreeIn-App Purchases

BaseCalc Plumbing Calculator screenshot 1

BaseCalc Plumbing Calculator screenshot 2

BaseCalc Plumbing Calculator screenshot 3

BaseCalc Plumbing Calculator screenshot 4

BaseCalc Plumbing Calculator screenshot 5

This professional tool offers 18 essential calculators for plumbing field work, including pipe sizing, pressure drop, and drainage. It saves calculations, generates job worksheets, and exports PDFs, all while working offline.

PipeFall: Pipe & Drain Sizing by ZHENGQIAO JIANG

Slope, Fixture Units & DFU

Worth Considering

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

PipeFall: Pipe & Drain Sizing screenshot 1

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More apps like Flowbox

CutOnce - Builder's Calculator

Stairs, Rafters & Fractions

Free

This app provides essential jobsite calculations for contractors and builders, including stair and rafter plans, feet-inch-fraction math, and right triangle solutions. Generate detailed PDF plans offline and export them for shop use or sharing with your crew.

Stair and rafter PDF plan generationOffline jobsite calculationsFeet-inch-fraction math

Smart bluetooth headset

Free

This app allows users to customize settings and optimize sound quality for supported Bluetooth headphones. It offers features like ambient sound control, personalized operation settings, and white noise for relaxation. Users can also track their earbuds' battery life.

Ambient sound control (ANC)Customizable operation settingsWhite noise for relaxation

Code Snap: UPC & IPC Pro

Uniform Plumbing Code

Free

Access essential plumbing code data and calculations on the go. This app provides quick access to UPC & IPC tables, water line sizing, and fitting take-offs, streamlining fieldwork for plumbing professionals.

UPC & IPC code tablesWater line sizing calculatorDWV & H2O fitting take-offs

Pipe Fitting & ASME Toolbox

Piping Febrication Pro

Free

Access essential piping engineering data, standards, and smart calculators for professionals and students. Covers ASME standards, pipe and flange dimensions, fitting details, and valve sizes. Includes daily tips and quizzes to enhance knowledge.

Engineering calculatorsPiping data and standardsPipe dimensions

🔧 Utilities

(11)

free with in-app purchases

Compare with Flowbox

Construction Calculator .

Feet Inch Calculator

Free

This app provides essential tools for contractors, builders, and DIYers to perform fast, accurate construction calculations on the job site. It streamlines planning, estimating, and material measurement for various building tasks, reducing errors and saving costs.

Specialized calculators for concrete, lumber, drywall, and roofingAdvanced stair and framing calculatorsInstant unit conversions

Measure Master Pro Calculator

Design + Building Math Calc

Free

This app provides comprehensive U.S. and metric unit conversions and advanced calculations for design and building projects. It offers solutions for geometry, weight, and dimensional analysis, with a user-friendly interface and built-in help.

Multi-dimensional unit conversion (U.S. & metric)Advanced weight calculationsGeometry solutions (circle area, circumference)

🔧 Utilities

(4.2K)

free with in-app purchases

This app provides HVAC professionals with a digital toolbox for everyday tasks. It offers product information, installation guides, and advanced features to streamline work, including project management and hydronic balancing tools.

Radiator PresettingProduct FinderMy Projects (Cloud-based)