Comparison

Engine Calculator Plus vs Electronic

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Engine displacement calculation
  • Compression ratio calculation
  • Horsepower estimation
  • Metric and Imperial support
  • 3D engine display
  • Copyable results
Features
Read full description

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.

About

Electronic

This comprehensive electronics reference and tool suite offers over 70 calculators, tables, and data for engineers, students, and hobbyists. It features a modern UI, iCloud sync, multi-window support, and PDF export, all accessible offline.

Highlights
  • Over 70 tools, tables, and references
  • Universal app for iPhone, iPad, and Mac
  • iCloud sync across devices
  • Multi-window support for parallel use
  • PDF export for results
  • Offline functionality
  • Modern UI with Dark Mode
Features
Read full description

Electronic Toolbox 2 – The classic, re‑imagined Since 2009, Electronic Toolbox has been one of the most comprehensive electronics references and toolboxes on the App Store—for professionals, students, makers, HAMs, and hobby engineers. With Electronic Toolbox 2, a fully modernized new edition arrives: familiar in structure, up to date technologically, and consistently evolved. # The best and most complete electronics app—now for iPhone, iPad & Mac Over 70 tools, tables, and references—from “A” like ASCII table to “Z” like Zener diode calculation: Everything you need in the lab, workshop, or lecture hall, in one place. • Universal app: One purchase—three platforms (iPhone, iPad, Mac) • iCloud sync: All settings and favorites automatically on all devices • Multi‑window support: Use multiple tools in parallel—ideal for comparisons • PDF export: Save, document, or share results • Pinned tools: Keep important tools always at hand • Interactive tools: New visualizations, e.g., in the Battery Charge tool • Modern UI with Dark Mode: Redesigned, clearly structured, and easy to read # Proven foundation, familiar workflow Electronic Toolbox 2 stays true to its heritage—all known tools are included and have been carefully revised. From calculators to reference data: nothing is missing, much is better. Examples: • Resistor color code and coil calculator • NE555 and heatsink calculation • Conversion and unit tools (HEX, AWG, frequency, and more) • Parametric component search with datasheets • Tables for batteries, drill sizes, IC pinouts, packages, and more • References for boards like Raspberry Pi, Arduino, BeagleBone, Nano Pi … • Global search across all tools • Fully usable offline • No ads, no in‑app purchases # Continuously improved—since 2009 Electronic Toolbox has been maintained and improved with passion for over a decade. With version 2, we carry this legacy forward—on a new technical foundation for the years ahead. Feedback from the community remains central: every suggestion helps make the toolbox even better. # Gentle transition The original Electronic‑Toolbox Pro remains fully usable—existing workflows are not interrupted. Existing customers can switch to the new version via a discounted bundle. Features like the Circuit Editor or Projects will initially remain exclusive to Electronic‑Toolbox Pro and are not yet included in this new edition. # From the developer Jan Roskosch built Electronic Toolbox 2 together with his father Marcus Roskosch, the developer of the original app. A modern realization of a classic—with the same passion for electronics, precision, and quality. # At a glance • Completely new, modern interface • All known tools from the original app included • Universal app for iPhone, iPad, and Mac • iCloud synchronization • PDF export & multi‑window support • Fully usable offline • No ads, no in‑app purchases ----- Electronic Toolbox 2—the future of the electronic toolbox. Continued with passion. Built for you.

Screenshots

Engine Calculator Plus4 screens
Electronic4 screens

Verdict

The call

The clearest difference is review sentiment: Electronic at 100% against Engine Calculator Plus's 13%. Electronic also leads on update cadence (fortnightly vs every 48 months) and ratings volume (3 vs 1). Engine Calculator Plus's advantage is rating (4.0 vs 2.3) and price ($2.99 vs $9.99). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Engine Calculator Plus costs $2.99 and Electronic $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Engine Calculator Plus holds the better App Store score, 4.0 against 2.3. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews complicate that: 13% of Engine Calculator Plus's written reviews are positive against 100% of Electronic's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Engine Calculator Plus ships an update every 48 months, Electronic fortnightly. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

Scorecard7 real differences · 4 level
Engine Calculator Plus versus Electronic: the parameters behind the verdict, then further details
ParameterEngine Calculator PlusElectronic
Price$2.99 — better$9.99
Rating4.0 (1 ratings) — better2.3 (3 ratings)
Positive reviews12.5% of reviews100.0% of reviews — better
Number of ratings13 — better
Update frequencyEvery 48 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#199 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13 — better18.5
Further details — not scored
Size2 MB166 MB
Age rating4+4+
DeveloperNitrioMarcus Roskosch

Customer experience

Engine Calculator Plus

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive12.5%
Neutral0.0%
Negative87.5%

Electronic

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Engine Calculator Plus

No in-app purchases

None

Electronic

No in-app purchases

Questions

Is Engine Calculator Plus free?
Engine Calculator Plus costs $2.99, with no in-app purchases.
Is Electronic free?
Electronic costs $9.99, with no in-app purchases.
Which has better reviews, Engine Calculator Plus or Electronic?
Engine Calculator Plus is rated higher. Engine Calculator Plus averages 4.0 out of 5 from 1 ratings, while Electronic averages 2.3 from 3 ratings.
Do Engine Calculator Plus or Electronic have ads?
Neither Engine Calculator Plus nor Electronic shows ads.
Which is updated more often, Engine Calculator Plus or Electronic?
Engine Calculator Plus ships an update every 48 months, and Electronic fortnightly. Most recently, Engine Calculator Plus was updated on September 29, 2026 and Electronic on October 2, 2026.

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