Engine Calculator Plus vs Kateb
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
Read full descriptionHide 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.
Kateb
Read full descriptionHide full description
Unparalleled Accuracy & Flexibility: Multilingual Support: Speak in Arabic or English and receive accurate transcriptions. Multi-Dialect Arabic Recognition: No need to switch dialects - Kateb understands them all! Real-Time Response: See your words appear on screen as you speak, no waiting required. Contextual Autocorrection: Kateb intelligently adjusts your transcriptions based on the surrounding text. Seamless Workflow & Customization: Editing Made Easy: Refine your transcribed text with intuitive editing tools. Export & Share Options: Copy, download, or share your transcribed text with just a few taps. Simple to Use: Get started immediately, no registration required. Effortless Registration: Create an account in a few easy steps to unlock additional features. Experience the Power of Speech with Kateb: Unmatched Security: We take your privacy seriously. Your data is protected with the highest security standards. Enhanced Productivity: Transform your ideas into text with unmatched speed and accuracy. Accessibility for All: Whether you're a student, professional, or anyone who values convenience, Kateb is your ideal companion. Download Kateb today and unlock the power of your voice! For further support, please contact us at info@rdi-eg.ai
Screenshots
Verdict
The clearest difference is price: Kateb at Free against Engine Calculator Plus's $2.99. Kateb also leads on update cadence (every 6 months vs every 48 months). Engine Calculator Plus's advantage is chart position (#183 vs unranked). On ads, in-app purchases, device support and iOS requirement 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
Kateb 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.
Engine Calculator Plus ships an update every 48 months, Kateb every 6 months. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.
| Parameter | Engine Calculator Plus | Kateb |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 12.5% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 48 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #183 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13 | 12.1 — better |
| Further details — not scored | ||
| Size | 2 MB | 76 MB |
| Age rating | 4+ | 17+ |
| Developer | Nitrio | THE ENGINEERING COMPANY FOR DEVELOPMENT OF DIGITAL SYSTEMS SAE |
In-app purchases
Engine Calculator Plus
No in-app purchases
Kateb
No in-app purchases
Questions
Is Engine Calculator Plus free?
Is Kateb free?
Do Engine Calculator Plus or Kateb have ads?
Which is updated more often, Engine Calculator Plus or Kateb?
Other comparisons















