Engine Calculator Plus vs Electrical Motor Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engine Calculator Plus
Calculate engine specifications for various car and plane engines, including displacement, compression ratio, and horsepower. Supports metric and imperial systems with a user-friendly interface and 3D engine visualization.
- Engine displacement calculation
- Compression ratio calculation
- Horsepower estimation
- Metric and Imperial support
- 3D engine display
- Copyable results
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Engine Calculator Plus is designed to help you figure out engine specs for all car or plane engine types from inline 4 to V12 Engine. This calculator provides calculations for engine displacement based on either the metric or US standard system. Features: - User friendly UI - Engine type selection from single cylinder to complex W16 or even custom cylinder count. - Display 3D engine from selection - Metric or Imperial input - Output Engine Displacement on cc, liter and cubic inch - Output Compression ratio of engine - Calculate estimate horse power in HP and Kilowatts - Include formula to calculate the engine displacement in help page - Result are copy-able to other app The engine's static compression ratio is easily calculated if you know six measurements or volumes: Bore - The diameter of the cylinder bore Stroke - The distance the piston travels in the cylinder Deck Height - The distance between the top of the cylinder bore and the top of the piston, when the piston is at TDC (Top Dead Center, or at its highest position) Piston top volume - If the piston is dished, domed, or dimpled, that has an affect on compression ratio. Combustion chamber volume - How much open space is in the head above the cylinder Compression ratios: Higher compression ratios cylinder produces better power and fuel economy. It is not just because the charge is squeezed harder and the resulting combustion pressure goes up, but also because the higher expansion ratio allows more energy to be extracted from the original high-pressure. High compression ratio engines burn both much more cleanly and much more efficiently than lower-compression engines. However a lower compression motor will let you run cheap fuel, but your motor won't be as efficient, less efficient and less power. *Thanks for your support, stay tune for more update to come.
Electrical Motor Calculator
This engineering tool calculates key electrical motor characteristics like amps, horsepower, and kVa. Input system voltage, motor efficiency, and power factor to determine electrical values for your system.
- Calculate amps, horsepower, and kVa
- Input system voltage and motor efficiency
- Converts kilowatts to horsepower
- Defines Power Factor (PF) and Full Load Amps (FLA)
- Calculates Running Load Amps (RLA)
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Electrical Motor Calculator is an engineering tool to calculate amps, horsepower, kilowatt and kVa base on electrical motor formula. Electrical Motor Calculator calculated values and are intended for use as a means of indicating expected values for electrical motor and similar product. Values will vary in service with load conditions, condition, age and type of motor. Electrical Motor Calculator lets you figure out electrical characteristics of your system given a specific motor. By inputting horsepower, kilowatt, motor efficiency, power factor, and system voltage the system will calculate the amps, horsepower, kilowatt and kVa. PF - Power Factor - three phase motors (0 - 100%) or (0.0 - 1.0) FLA - "Full Load Amps" - the amount of current when a motor is at its full rated output power. FLA is the running load + 25%. RLA - "Running Load Amps" - current drawn during normal operation of electric motor. 1 kVA = 1,000 volt amps Kilowatts to horsepower conversion 1 HP = 0.7457 kW 1 kW = 1.34102 HP Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
Screenshots
Verdict
The clearest difference is rating: Engine Calculator Plus at 4.0 against Electrical Motor Calculator's 3.8. Electrical Motor Calculator's advantage is ratings volume (8 vs 1). On price, update cadence, 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
Engine Calculator Plus costs $2.99 and Electrical Motor Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Engine Calculator Plus holds the better App Store score, 4.0 against 3.8. That said, the two scores are not equally well evidenced: Electrical Motor Calculator has 8 ratings behind it against 1, so its average is the more settled of the two.
Engine Calculator Plus ships an update every 48 months, Electrical Motor Calculator every 43 months. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.
| Parameter | Engine Calculator Plus | Electrical Motor Calculator |
|---|---|---|
| Price | $2.99 | $2.99 |
| Rating | 4.0 (1 ratings) — better | 3.8 (8 ratings) |
| Positive reviews | 12.5% of reviews | — |
| Number of ratings | 1 | 8 — better |
| Update frequency | Every 48 months | Every 43 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #183 | #174 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 | 13 |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | Heng Jia Liang |
Customer experience
Engine Calculator Plus
Electrical Motor Calculator
In-app purchases
Engine Calculator Plus
No in-app purchases
Electrical Motor Calculator
No in-app purchases
Questions
Is Engine Calculator Plus free?
Is Electrical Motor Calculator free?
Which has better reviews, Engine Calculator Plus or Electrical Motor Calculator?
Do Engine Calculator Plus or Electrical Motor Calculator have ads?
Which is updated more often, Engine Calculator Plus or Electrical Motor Calculator?
Which is more popular, Engine Calculator Plus or Electrical Motor Calculator?
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