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Ductulator - Duct Sizing icon
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Wassim Murr

For hVAC technicians and engineers requiring field calculations, alongside privacy-conscious individuals tracking nutrition or education.

6apps3.1(296) Multi-theme

Snapshot

Who is Wassim Murr?

Providing specialized technical utilities for HVAC professionals alongside privacy-centric personal productivity and health tools.

Target audience

HVAC techniciansEngineers requiring field calculationsAlongside privacy-conscious individuals tracking nutrition or education

Active nemesis

Pheinex

Other rivals

Portfolio

Free 2
6
apps
Productivity2
Utilities2
Education1
Health & Fitness1

Last updated

Ductulator - Duct Sizing

v3.5

8mo ago

Intense

Publisher DNA

What defines Wassim Murr?

Publisher DNA

Primary focus

Technical HVAC utilities and privacy-focused productivity tools

Scale

indie

Target audience

HVAC technicians and engineers requiring field calculations, alongside privacy-conscious individuals tracking nutrition or education.

Signature Patterns

  • •Focus on high-utility, niche technical calculators for the HVAC and plumbing industries.
  • •Preference for paid upfront monetization models on professional utility applications.
  • •Strict privacy-first approach for consumer titles, featuring no-signup and ad-free data policies.
  • •Deep integration with Apple ecosystem features including iCloud sync and Apple Intelligence.
Intense

Portfolio momentum

The publisher is in a high-growth phase with 10 releases across 6 active apps in the last 6 months, including several new titles launched in late 2025.

Last release 24d agoActive apps 6

Portfolio

What does Wassim Murr ship?

Apps

6 apps analysed

Single-market publisher, every app ships only to United States.

Based on 1 of 6 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (1)

  • United States1 / 1

Core markets (1/1 apps)

United States

Rivals

Who does Wassim Murr compete with?

The rivals identified

Nemeses(2)

Pheinex

known forPipe Sizer - Water

2 apps4.8Utilities

Both applications target engineers and designers with hydraulic calculation tools, creating a direct overlap in professional utility for water system sizing.

V PUGAZHENTHI

known forFluid Mechanics Calculator

1 app4.5Utilities

Both apps target civil engineering professionals and students needing hydraulic calculations, creating direct competition for users seeking specialized water system design tools.

Contenders(9)

Carmel Software

known forHVAC Psychrometric Plus

1 app3.0Utilities

Both apps target HVAC professionals for psychrometric calculations, creating direct competition for the same professional user base.

FlyCarpet

known forFlyCarpet Psychrometric Calc

2 apps0.0Utilities

Both applications target HVAC professionals requiring air property calculations, creating direct competition for the same technical user base.

Historycentral.com

known forMechanical Engineer

1 app4.5Utilities

Both apps target mechanical engineering professionals, with Psychrometrics focusing on HVAC air property calculations while Mechanical Engineer provides a broader library of over 300 engineering formulas.

Konstantinos Ladiellis

known forPsychrometry Chart

1 app0.0Utilities

Both applications target HVAC professionals requiring psychrometric calculations and chart plotting, with overlapping support for SI and imperial unit systems.

Pipe Flow Software

known forPipe Flow Gas Pipe Diameter

5 apps5.0Utilities

This app specializes in gas pipe sizing, offering a deeper set of industry-standard equations for gas systems than the general-purpose Pipe Sizer.

Trond Rossvoll

known forHVAC-calculator

1 app4.0Utilities

Both apps target HVAC professionals and engineers with mobile-based calculation tools, creating direct competition for field-use utility.

Vector 254

known forChemical Engineering AppSuite HD

1 app3.9Utilities

Both apps target engineering professionals requiring thermodynamic data and unit conversions, creating a direct overlap in technical utility for field calculations.

Xmuzzers Thermodynamics Education

known forThermonator - Thermodynamics

1 appUtilities

Both apps target engineering professionals and students requiring thermodynamic property calculations and system modeling. They compete for the same user base seeking mobile-based air state analysis and thermodynamic problem solving.

yoshihito sakagami

known forCalculator of Air

1 app4.6Utilities

Both apps target HVAC engineers with specialized psychrometric calculation tools, creating direct competition for professional utility workflows.

Same space(29)

Ashvin Kevadiya

known forPipe Pressure drop calculator

2 apps4.6Utilities

This app provides a comprehensive database-driven approach to pressure drop calculations, covering a wide range of materials and fluids.

Bhavinkumar Satashiya

known forPipe Cutting Calculator

1 app3.4Utilities

This app addresses the geometric fabrication needs of pipe fitters, serving as a companion to the hydraulic sizing tools in Pipe Sizer.

Blas Prieto

known forBTU Calculator: AC & HVAC

1 app5.0Utilities

This app focuses on load calculation, serving users who need to determine system capacity before performing detailed air state modeling.

Bri-Steel Manufacturing

known forPipe Tools

1 app4.1Utilities

This app serves as a reference handbook for industrial pipe specifications, providing data that engineers might need alongside their sizing calculations.

Calculated Industries

known forHVAC & Sheet Metal Calculator

1 app4.8Utilities

This tool focuses on the construction-math side of HVAC, providing a specialized workflow for sheet metal fabrication that complements air property analysis.

Cleveni

known forClevCalc - Calculator

2 apps4.6Productivity

ClevCalc serves as a general-purpose utility that occupies the same productivity category as Ductulator, often residing on the same device for auxiliary math needs.

Condair

known forPsychro Chart

1 app4.8Utilities

This app is a direct functional alternative for psychrometric plotting, offering diagram-based calculations similar to the source app.

Cyberprodigy

known forPipe Calc Elite

1 app4.8Utilities

This app serves as a broader trade-focused utility for pipe dimensions and offsets, complementing the specific hydraulic sizing focus of Pipe Sizer.

Designstein

known forSuperCool Slide Rule HVAC

1 app4.2Utilities

This app provides broad HVAC diagnostic support, serving as a general-purpose field companion for technicians who also require air property calculations.

Gregory Enterprises

known forIN HVAC Calculator

1 app4.1Utilities

This app provides reference data for home inspectors, acting as a static companion to the dynamic calculations found in psychrometric tools.

iENGINEERING

known forCompare Flow

1 app5.0Utilities

This app focuses on sewer and drainage capacity, providing a comparative tool for non-pressure pipe materials and geometries.

IT Welding Sweden AB

known forPipe Guide Calculator

1 app3.0Utilities

This app acts as a general-purpose reference for pipe fitting, aiming to replace physical tables with a digital calculator.

Kelly Pipe Co

known forPipe Source

1 app4.0Utilities

This app serves as a procurement bridge for industrial steel pipes, offering specification data that supports the design phase of piping projects.

Larry Owens

known forFlow Test Calculator

1 app4.1Utilities

This app focuses on the specific task of hydrant flow testing, acting as a specialized subset of the broader water system sizing capabilities in Pipe Sizer.

Legend Brands

known forDri-Eaz Psychrometric Calc

1 app4.2Utilities

This app serves the water damage restoration niche, offering a specialized psychrometric calculation set that competes directly with general-purpose air property tools.

Lucy Enterprises

known forThermodynamics Calculators

1 app5.0Utilities

This app provides thermodynamic modeling for engineering professionals, offering a higher level of simulation complexity than standard psychrometric utilities.

Mario Cerda

known forPipeSizer: Diameter Selector

1 app0.0Utilities

This app is a direct competitor in the pipe sizing space, offering a ranking system for candidate diameters based on velocity constraints.

Melchisedec Martinez Rodriguez

known forAC Calculator - HVAC Sizing

1 app4.0Utilities

This utility addresses the equipment selection phase of HVAC, providing a logical next step for users after performing psychrometric analysis.

MonStudioVN

known forPipeFit Pro: Offset Calculator

1 appUtilities

This app focuses on the manual labor of pipe fitting, providing a specialized calculator for offsets and miters.

Mr Combi Training

known forGas Pipe Sizing Calculator

1 app2.0Utilities

This app addresses the specific problem of incorrect gas pipe sizing in boiler installations, providing a guided calculation workflow.

National Refrigerants

known forP-T Calculator

1 app4.8Utilities

This app targets the pressure-temperature diagnostic workflow, which is a frequent task for professionals using air state analysis tools.

PATRICK D MC CLELLAN

known forHydroCalc - Manning Calculator

1 app5.0Utilities

This app provides a specialized tool for open channel and pipe flow, offering an alternative for drainage-specific hydraulic calculations.

PLAYRIOT

known forHVAC Pro Calculator: NEC + P-T

1 app5.0Utilities

This app combines load sizing with field diagnostics, offering a broad utility set for HVAC technicians.

Sebastjan Valic

known forNatural Gas Pipe Size

1 app5.0Utilities

This app targets natural gas sizing specifically, positioning itself as a faster, subscription-free alternative to AI-based solutions.

Transparent Blue Water

known forSewer Pipe Calculator

1 app0.0Utilities

This app is a specialized tool for gravity sewer design, focusing on Manning equation calculations for partially full pipes.

Vyacheslav Dovner

known forHVAC Calculator: BTU & AC Load

1 app0.0Utilities

This app focuses on load sizing and duct calculations, providing a streamlined workflow for field technicians.

xNeat.com

known forPipe Fitting

1 app4.7Utilities

This app targets the same field-based professional audience but focuses on physical layout and welding geometry rather than hydraulic flow sizing.

Yuhsiu Lai

known forMechanical Engineering Lab

1 app0.0Utilities

This app serves as an educational reference for mechanical engineering, providing visual context for the systems analyzed in psychrometric tools.

华 陆

known forFlux HVAC: Tech Calculator

1 app5.0Utilities

This app serves as a comprehensive field toolkit for technicians, providing diagnostic features that complement the analytical capabilities of psychrometric software.

New entrants(2)

BASEMAPPED

known forBaseCalc HVAC Calculator

1 app5.0Utilities

This app bridges the gap between field calculations and administrative billing, providing a workflow integration that psychrometric tools lack.

静 李

known forHVAC Calculator - FieldCalc

1 app0.0Utilities

This app provides a professional-grade calculation suite for technicians, focusing on offline reliability for critical field tasks.

The Analyst's Read

The bottom line on Wassim Murr

Bottom line

Wassim Murr is a disciplined indie publisher with a strong foothold in professional engineering utilities. The transition toward AI-enabled consumer apps suggests a strategy of applying technical precision to broader productivity and health niches while maintaining a strict privacy-first competitive advantage.

Frequently asked questions

How many apps does Wassim Murr publish?
Wassim Murr has 6 apps tracked by Marlvel, primarily in the Productivity category.
What kind of apps does Wassim Murr make?
Wassim Murr's portfolio is concentrated in Productivity and Utilities, with an average rating of 3.1/5 across rated apps.
What is Wassim Murr's top app?
By review volume across the portfolio, Ductulator - Duct Sizing is Wassim Murr's best-known app tracked by Marlvel.
In how many countries are Wassim Murr's apps available?
Marlvel has tracked Wassim Murr's apps across 1 country.

What fed this analysis

Apps analyzed:
6
With full intel:
0
With overview:
6
Website scraped:
yes
Social presence:
no

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Wassim Murr, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Wassim Murr intelligence.” Updated 2026-04-24. https://marlvel.ai/publishers/wassim-murr

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Data licensed under CC-BY-NC 4.0