Ohms Law Calc. vs Pipe Flow Liquid Pipe Diameter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ohms Law Calc.
This app provides a comprehensive suite of electrical calculations, including Ohm's Law, voltage drop, wire sizing, and impedance. It also offers numerous converters for various electrical units and parameters, aiding in circuit design and analysis.
- Ohm's Law calculations
- Voltage drop calculator
- Wire size calculator
- Impedance calculations (R, L, C)
- Electrical unit converters
- Power and current conversions
- Circuit design tools
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Ohm's Law Calc. consists of 60 Electrical Calculators with Formulas and Circuits and 16 Electrical Converters. • Voltage Calculator • Current Calculator • Resistance Calculator • Power Calculator • Voltage Drop Calculator • Wire Size Calculator • DC Generator Calculator • Transformer Calculations (Voltage & Current) Impedance Calculators Calculate impedance for combinations of resistors (R), inductors (L), and capacitors (C) in both series and parallel configurations: • R and L in Series / Parallel • R and C in Series / Parallel • L and C in Series / Parallel • R, L and C in Series / Parallel Power and Current Conversions • kVA to Amps (Single Phase & Three Phase) • Amps to kVA (Single Phase & Three Phase) • Single Phase & Three Phase Power Calculators • Horsepower Calculators (DC, Single Phase, Three Phase) Efficiency and Power Factor Tools • Efficiency Calculators (DC, Single Phase, Three Phase) • Power Factor Calculators (Single Phase & Three Phase) Energy Storage Calculators • Energy Cost Calculator • Energy Storage Calculators (Resistance, Inductance, Capacitance) Circuit Design Tools • Star-to-Delta and Delta-to-Star Conversions • Inductive & Capacitive Reactance Calculators • Resonant Frequency Calculator • Inductor and Capacitor Sizing Equations Component Calculations • Series and Parallel Calculators for Resistance, Inductance, and Capacitance • Unknown Resistance and Capacitance Calculators (Series & Parallel) More Calculations • Neutral Current (3-Phase Unbalanced Loads) • Characteristic Impedance (Parallel & Coaxial) • Transformer Calculator • Voltage Divider Calculator Illumination Calculators • Luminous Intensity Calculator • Luminous Flux Calculator • Solid Angle Calculator Electrical Converters • Field Strength Converter • Electrical Potential Converter • Resistance and Resistivity Converters • Conductance and Conductivity Converters • Capacitance and Inductance Converters • Charge Converters: Handles conversions for electrical charge, including: • Linear Charge Density • Surface Charge Density • Volume Charge Density • Linear Current Density • Surface Current Density • Power Converter App works with both iPhones, iPads and Mac Multiple Unit Compatibility: Supports a wide range of units for all electrical parameters, including Ohms, kiloOhms, Farads, Henrys, kVA, Volts, Weber, and more.
Pipe Flow Liquid Pipe Diameter
This app calculates the minimum internal pipe diameter required for a specific flow rate and maximum pressure loss. It offers comprehensive results, customizable databases for materials and fluids, and generates professional reports.
- Pipe diameter calculation
- Friction loss calculation
- Customizable material and fluid databases
- Imperial and Metric unit support
- Professional Excel and PDF reports
- Results verification against published data
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Pipe Flow Liquid Pipe Diameter is a pipe sizing calculator app from Pipe Flow Software that calculates the minimum internal pipe diameter needed for a given flow rate at a specified maximum pressure loss. Pipe Flow Software applications are used by engineers in over 100 countries worldwide. The Pipe Diameter App has an intuitive user interface that allows for easy entry of the input data, including changes in elevation, and selection of valves & fittings. Comprehensive results include Reynolds number, friction factor, friction losses, fitting losses, fluid velocities and more. Each result is clearly displayed using expandable sections that reveal further information as needed. Users can select pipe materials, pipe diameters, pipe fittings (k factors) and liquids from the integrated databases, and these can also be extended with user specific data for custom pipe materials, diameters, fittings, and liquids. The App can operate in Imperial or Metric units and each individual field can be further customised to use a specific unit. Results values can be displayed to a specified number of decimal places. Pipe Flow Liquid Pipe Diameter calculation results have been verified against multiple cases of published data from well known sources. The results of these calculations are included in the Results Verification PDF document which can be accessed from within the App. Engineers can easily perform their pipe sizing calculations in the office or on site. Professional Excel and PDF reports can easily be shared with others. Results can also be saved to the library within the App. The Pipe Flow Liquid Pipe Diameter software has unrivalled functions and features: - Liquid properties database for water, oils, acids, and other fluids. - Pipe material database for various Steel, Aluminium, Copper, HDPE, and other pipes. - Fitting database for standard valves and bends, with associated K factor values. - User definable custom materials, fluids and fittings. - Professional Excel and PDF reports showing calculation results. - Results verification against published data to provide confidence in the calculation results. - Configurable post decimal places for display on screen and in reports. - Automatic conversion between a wide range of units. - Compatibility with Pipe Flow Wizard files for iOS, macOS and Windows. - Calculation results based on the same reliable calculation engine that is used by Pipe Flow Software's premier Pipe Flow Expert software, which is trusted by users in over 100 countries worldwide. - High quality, reliable software, and unrivalled customer support. Pipe Flow Liquid Pipe Diameter is offered as a free trial download and can be purchased for a one-time fee within the App. Terms of Use: https://www.pipeflow.com/pipe-flow-mobile-software/pipe-flow-mobile-software-license-terms
Screenshots
Verdict
The clearest difference is ads: Pipe Flow Liquid Pipe Diameter at none against Ohms Law Calc.'s shown. Pipe Flow Liquid Pipe Diameter also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (11.0 vs 17.6). Ohms Law Calc.'s advantage is ratings volume (1.3K vs 5). On price, rating, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Ohms Law Calc. sells 1 one-off in-app purchase and Pipe Flow Liquid Pipe Diameter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.7 for Ohms Law Calc. against 4.6 for Pipe Flow Liquid Pipe Diameter. That said, the two scores are not equally well evidenced: Ohms Law Calc. has 1.3K ratings behind it against 5, so its average is the more settled of the two.
Ohms Law Calc. ships an update every 2 months, Pipe Flow Liquid Pipe Diameter fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | Ohms Law Calc. | Pipe Flow Liquid Pipe Diameter |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (1.3K ratings) — better | 4.6 (5 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1.3K — better | 5 |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 59 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | V PUGAZHENTHI | Pipe Flow Software |
Customer experience
Ohms Law Calc.
Pipe Flow Liquid Pipe Diameter
Bugs and requests
Ohms Law Calc.
Reported bugs
3 issues- Paid version not unlocking
- Repeatedly prompting for payment after already paid
- Keyboard overlaying results making it difficult to see
Requested features
3 requests- Add more electrical conversions and calculations
- Add ability to input voltage and resistance to get amps and watts
- Add kVA, rms, and other popular needed conversions
Pipe Flow Liquid Pipe Diameter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ohms Law Calc.
- Ohms Law Calc.$3.99
Pipe Flow Liquid Pipe Diameter
- Pipe Flow Pipe Diameter$4.99
Questions
Is Ohms Law Calc. free?
Is Pipe Flow Liquid Pipe Diameter free?
Which has better reviews, Ohms Law Calc. or Pipe Flow Liquid Pipe Diameter?
Do Ohms Law Calc. or Pipe Flow Liquid Pipe Diameter have ads?
Which is updated more often, Ohms Law Calc. or Pipe Flow Liquid Pipe Diameter?
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