Power Calculator vs Pypley
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Power Calculator
This app provides a straightforward calculator designed for the electrical industry, offering tools for power and lighting calculations. It helps users determine generator and UPS requirements, convert units, and calculate fuel consumption. Suitable for both professionals and casual users needing electrical calculations.
- KW, kVA, and Amps calculation
- Generator requirements calculation (single/three phase)
- UPS requirements calculation (single/three phase)
- Lumens and Watts conversion
- Generator fuel consumption calculation
- Generator power calculation
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A simple no fuss calculator for electrical industry professionals & casual users alike. Incorporates a range of electrical power & lighting calculators: • KW and kVA and Amps • Calculate generator requirements (single or three phase) • Calculate UPS requirements (single or three phase) • Convert Lumens & Watts • Generator Fuel Consumption • Generator Power Calculator
Pypley
This app calculates flow rate, pressure drop, and pump performance for circular pipe systems. It supports custom pumps and fittings, and allows for unit conversions between Metric and US Imperial. Ideal for hydraulic and process engineers for early-stage design and quick estimations.
- Flow rate and pressure drop calculation
- Customizable pump and fitting database
- Metric/Imperial unit conversion
- Pump performance curve plotting
- Cavitation risk assessment (NPSH)
- Reynolds number and friction factor calculation
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Pypley calculates flow rate, pressure drop, and pump performance for circular pipe systems with Newtonian liquids. Build serial pipe systems using a pump database, fittings, and valves, with support for custom pumps and fittings stored via iCloud. Designed for hydraulic and process engineers, Pypley supports early-stage design and quick estimations. Key Features: * Converts all project parameters between Metric and US Imperial units. * Calculates flow rate, pipe velocity, and pressure drop in pipes. * Generates pressure loss tables for fittings and pipes in the system. * Includes native and customizable pump database. * Adjusts pump performance via speed (RPM) and impeller diameter. * Plots pump and system performance curves. * Computes K values for fittings using 3K and 2K methods. * Determines Reynolds number for each pipe diameter. * Calculates pipe friction factor using the Colebrook equation. * Reports pump discharge pressure and pressure at each pipe’s start. * Evaluates NPSHr and NPSHa to assess pump cavitation risk. * Supports custom fitting lists with Kv/Cv coefficients or pressure/flow data. * Detects negative pressure in pipelines. * Identifies when centrifugal pumps reach maximum flow capacity. * Organises projects chronologically, with newest first. * Provides an expanded pipe material library with enhanced data. Pypley is a design tool for hydraulic and process applications, ideal for initial designs or rapid calculations. Note: Pypley does not support parallel or network flow analysis. Disclaimer: While we strive for accuracy and will address any issues, the developer is not liable for errors or omissions in Pypley’s calculations.
Screenshots
Verdict
The clearest difference is price: Power Calculator at Free against Pypley's $2.99. Power Calculator also leads on rating (4.5 vs 1.0). Pypley's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 17.6). On review sentiment, ratings volume, ads and in-app purchases 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
Power Calculator is free to download; Pypley costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Power Calculator holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 84% and 83% positive.
Power Calculator ships an update every 2 months, Pypley every 3 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.
| Parameter | Power Calculator | Pypley |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.5 (2 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 84.2% of reviews — better | 83.3% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Power Continuity Limited | Ali Mohammed |
Customer experience
Power Calculator
Pypley
In-app purchases
Power Calculator
No in-app purchases
Pypley
No in-app purchases
