Comparison

Trans4motor vs Car Engine and Suspension

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

Head to head
About

Trans4motor

Explore the mechanics of 4-stroke engines with this interactive simulator. Visualize the transformation of various engine types and understand their internal workings through detailed CG animation. Enhance your knowledge with adjustable settings and realistic engine sound options.

Highlights
  • Multi-cylinder engine transformation
  • Realistic engine sound (in-app purchase)
  • Accelerator control simulation
  • Expandable engine library
  • Custom engine registration and editing
  • Interactive educational videos
Read full description

Trans4motor is a simulator where you can control the movements of single cylinder to 12 cylinder 4 stroke engines on the iPad/iPhone. Recommended to anyone interested in car and motorcycle engines. This is for those who have a relentless love for engines and want to enhance their knowledge. #3 Top Paid iPad App in Japan #5 Top Paid iPhone App in Japan https://www.youtube.com/user/Trans4motor https://www.facebook.com/Trans4motor Features 1) Seamlessly transforms into different type of engines Select from inline to V-type, or other multi-cylinder engines, and watch the running engines transform over continuous CG animation. Enjoy watching the inline engine camshaft separate into two parts as it transforms into the V-type engine and how phase angle modulation between cylinders makes the crankshaft rotate, separate, and combine into many engine formations. 2) Add Engine Sound (In-App Purchase) Developed in technical collaboration with "CAI MEDIA CO.,LTD.", the developer of the iPhone app featuring innovative synthetic engine sound, "RealEngineSim" this new feature will add a variety of realistic engine sounds ranging from different number of cylinders to explosions with unequal intervals and cylinder rest. Engine Sound Add-On is available via In-App Purchase. 3) Accelerator Control Accelerator control is available during engine sound replay. Tilt iPhone to different degrees as if pressing the accelerator pedal. Tilt forward horizontally (as if pressing the accelerator) to activate the accelerator, and erect vertically (as if releasing the accelerator) to deactivate it. Furthermore, you can race the engine by tapping the center of rev counter. 4) Addition/expansion of engines There are currently 22 types of engines registered. Through automatic network updates, continuous expansion is planned. In addition, there are functions installed that allow users to newly register and edit engines. Able to adjust setting for engine bore stroke, firing order, and ignition timing. Easily replicate on the iPad, engines with unequal combustion intervals for two-wheelers, Inline-four crossplane or V5. 5) Interactive Movie ·Four-stroke engines ·Firing Order ·V Angle Recorded 3 controllable presentation videos. The company and product names used within the application are generally registered trademarks or trademarks of the respective companies. The objective of this application is to upload engine specifications disclosed to the public and to learn about general information regarding engines. It does not accurately replicate actual machine measurements and designs. The CG animated engine rotates at one tenth of the actual speed to enable users to learn the structure and to enjoy the visual.

About

Car Engine and Suspension

Explore detailed animated models of internal combustion engines and car suspension systems. Observe components in action, understand their functions, and experiment with suspension configurations to learn about automotive mechanics.

Highlights
  • Transparent internal combustion engine model
  • Animated suspension system visualization
  • Variable suspension system configuration
  • Slow-motion detail viewing
  • Component exploration
Features
Read full description

Explore Automotive Excellence with Car Engine and Suspension If you're an automotive enthusiast and have always wanted to unravel the secrets of a four-cylinder, 16-valve inline internal combustion engine, as well as gain a deep understanding of a car's suspension system, then the "Car Engine and Suspension" app is your gateway to the world of automotive mechanics. This app offers you a unique experience by providing an exact, animated model of a high-quality internal combustion engine, allowing you to explore each component and its operation with a transparent mode. Furthermore, it immerses you in the exciting world of a car's suspension system, where you can see all the parts in action, working in perfect harmony, all in slow motion so that you don't miss any detail. Key Features: Transparent Internal Combustion Engine: The app lets you delve into the heart of a car with a four-cylinder, 16-valve inline engine in a transparent mode. You can observe every component, from pistons and connecting rods to valves and the camshaft, in motion. This educational feature provides you with a unique insight into how an internal combustion engine works and how each piece contributes to the vehicle's performance. Comprehensive Suspension System: The app goes a step further by offering a detailed and animated representation of a car's suspension system. All essential parts, such as shocks, springs, control arms, and stabilizer bars, are present and operational. Witness how they react to different terrain conditions and driving scenarios, helping you understand the significance of an efficient suspension system in both performance and ride comfort. Variable Suspension System Configuration: Want to experience how suspension configuration affects a car's behavior? This app allows you to adjust and customize the suspension system's settings to see how it changes the handling and stability of the vehicle. Learn how suspension adjustments can adapt to different driving conditions, whether on smooth roads or rugged terrain. In summary, "Car Engine and Suspension" is an educational and engaging tool that immerses you in the fascinating world of automotive mechanics. Whether you're a car enthusiast or simply wish to learn more about how car engines and suspension systems work, this app offers an unparalleled experience. Download it today and become an expert in automotive engineering!

Screenshots

Trans4motor4 screens
Car Engine and Suspension4 screens

Verdict

The call

The clearest difference is price: Car Engine and Suspension at Free against Trans4motor's $2.99. Car Engine and Suspension also leads on in-app purchases (none vs 1) and rating (4.1 vs 3.7). Trans4motor's advantage is ads (none vs shown) and update cadence (every 2 months vs every 31 months). On review sentiment, ratings volume 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

Car Engine and Suspension is free to download; Trans4motor costs $2.99 up front. Trans4motor sells 1 one-off in-app purchase. Car Engine and Suspension asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Car Engine and Suspension holds the better App Store score, 4.1 against 3.7. Both are backed by a comparable volume of ratings — 70 and 65 respectively. Written reviews point the same way: 57% of Trans4motor's written reviews are positive against 63% of Car Engine and Suspension's.

UpkeepUpdate frequency

Trans4motor ships an update every 2 months, Car Engine and Suspension every 31 months. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

Scorecard7 real differences · 3 level
Trans4motor versus Car Engine and Suspension: the parameters behind the verdict, then further details
ParameterTrans4motorCar Engine and Suspension
Price$2.99Free — better
Rating3.7 (70 ratings)4.1 (65 ratings) — better
Positive reviews56.6% of reviews62.5% of reviews — better
Number of ratings70 — better65
Update frequencyEvery 2 months — betterEvery 31 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size24 MB189 MB
Age rating4+17+
DeveloperKitt Peak, Inc.Renzo Macedo

Customer experience

Trans4motor

All ratings70 ratings
Positive68.6%
Neutral5.7%
Negative25.7%
Written reviews113 reviews
Positive56.6%
Neutral14.2%
Negative29.2%

Car Engine and Suspension

All ratings65 ratings
Positive78.5%
Neutral3.1%
Negative18.5%
Written reviews8 reviews
Positive62.5%
Neutral12.5%
Negative25.0%

In-app purchases

1 purchases

Trans4motor

One-time1
  • Add Engine Sound$1.99
None

Car Engine and Suspension

No in-app purchases

Questions

Is Trans4motor free?
Trans4motor costs $2.99, and also offers in-app purchases.
Is Car Engine and Suspension free?
Car Engine and Suspension is free to download, with no in-app purchases.
Which has better reviews, Trans4motor or Car Engine and Suspension?
Car Engine and Suspension is rated higher. Trans4motor averages 3.7 out of 5 from 70 ratings, while Car Engine and Suspension averages 4.1 from 65 ratings.
Do Trans4motor or Car Engine and Suspension have ads?
Car Engine and Suspension shows ads; Trans4motor does not.
Which is updated more often, Trans4motor or Car Engine and Suspension?
Trans4motor ships an update every 2 months, and Car Engine and Suspension every 31 months. Most recently, Trans4motor was updated on September 21, 2026 and Car Engine and Suspension on September 10, 2026.

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