Engine Calculator Plus vs COMPUSHIFT Setup
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.
COMPUSHIFT Setup
Configure and manage HGM COMPUSHIFT transmission controllers. Adjust shift and lockup points, access diagnostic data, and save custom configurations for your vehicle's transmission.
- Adjust shift points
- Configure lockup points
- View diagnostic data
- Access transmission information
- Save and edit configurations
- Load configurations to controller
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This is the mobile setup app for HGM's COMPUSHIFT line of controllers. While connected to a controller, you can adjust shift and lockup points, view diagnostics, get information about your transmission, and much more. You can also save configurations, edit them with the controller off, and load them into the controller.
Screenshots
Verdict
The clearest difference is price: COMPUSHIFT Setup at Free against Engine Calculator Plus's $2.99. COMPUSHIFT Setup also leads on rating (4.7 vs 3.3) and update cadence (monthly vs every 48 months). Engine Calculator Plus's advantage is iOS requirement (13 vs 15.0). On ratings volume, ads, in-app purchases and device support 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
COMPUSHIFT Setup is free to download; Engine Calculator Plus costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
COMPUSHIFT Setup holds the better App Store score, 4.7 against 3.3. Both are backed by a comparable volume of ratings — 3 and 6 respectively.
Engine Calculator Plus ships an update every 48 months, COMPUSHIFT Setup monthly. Both last shipped on November 2, 2026.
| Parameter | Engine Calculator Plus | COMPUSHIFT Setup |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.3 (3 ratings) | 4.7 (6 ratings) — better |
| Positive reviews | 12.5% of reviews | — |
| Number of ratings | 3 | 6 — better |
| Update frequency | Every 48 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | HGM Automotive Electronics |
Customer experience
Engine Calculator Plus
COMPUSHIFT Setup
In-app purchases
Engine Calculator Plus
No in-app purchases
COMPUSHIFT Setup
No in-app purchases
Questions
Is Engine Calculator Plus free?
Is COMPUSHIFT Setup free?
Which has better reviews, Engine Calculator Plus or COMPUSHIFT Setup?
Do Engine Calculator Plus or COMPUSHIFT Setup have ads?
Which is updated more often, Engine Calculator Plus or COMPUSHIFT Setup?
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