Comparison

Trans4motor vs Explorion | Explore & Learn

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

Explorion | Explore & Learn

This interactive app offers over 200 STEM activities for children, transforming complex subjects into engaging 3D experiences. It provides a safe, hands-on digital laboratory for exploring physics, math, biology, engineering, and astronomy.

Highlights
  • Interactive 3D STEM labs
  • Bite-sized learning modules
  • Hands-on object manipulation
  • Content for all ages
  • Safe and focused learning environment
  • Physics, math, biology, engineering, astronomy modules
Features
Read full description

Fuel your child’s curiosity with Explorion—the ultimate interactive STEM learning app for kids of all ages. Is your child ready to dive into the wonders of the universe? Explorion turns complex concepts into bite-sized, interactive 3D experiences. From the laws of physics to the beauty of biology and the logic of math, we make learning feel like a world of discovery. Why Choose Explorion for Your Child? Explorion is designed by educators and parents to provide a safe, engaging environment for STEM education. We move beyond static textbooks, offering a hands-on digital laboratory right in your pocket. Explore Hundreds of Interactive 3D Labs: Physics: Experiment with gravity, motion, and energy through real-time simulations. Mathematics: Visualize geometry, fractions, and algebra in a way that finally makes sense. Biology: Journey inside a plant cell or explore the human body with detailed 3D models. Engineering: Understand how machines work by taking them apart and putting them back together. Astronomy: Travel through the solar system and learn about the stars and planets. Key Features for Young Explorers: Bite-Sized Learning: Perfect for short attention spans; complex topics are broken down into easy-to-digest modules. Hands-On Interaction: Rotate, zoom, and manipulate 3D objects to see exactly how things work. All Ages Welcome: Content scales from foundational science for younger children to advanced concepts for older students. Safe & Focused: A high-quality educational environment designed to keep kids focused on learning. Built for the Next Generation of Scientists Whether your child is a budding engineer or just curious about why the sky is blue, Explorion provides the tools to find the answers. Our mission is to make science and math accessible, fun, and deeply engaging for every kid. Join thousands of young explorers today! Download Explorion and start your journey into the world of STEM.

Screenshots

Trans4motor4 screens
Explorion | Explore & Learn4 screens

Verdict

The call

The clearest difference is price: Explorion | Explore & Learn at Free against Trans4motor's $2.99. Explorion | Explore & Learn also leads on update cadence (weekly vs every 2 months). 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

CostPrice · In-app purchases · Ads · Monetization

Explorion | Explore & Learn is free to download; Trans4motor costs $2.99 up front. Trans4motor sells 1 one-off in-app purchase and Explorion | Explore & Learn sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Trans4motor ships an update every 2 months, Explorion | Explore & Learn weekly. The most recent releases landed on October 11, 2026 and September 25, 2026 respectively.

Scorecard3 real differences · 7 level
Trans4motor versus Explorion | Explore & Learn: the parameters behind the verdict, then further details
ParameterTrans4motorExplorion | Explore & Learn
Price$2.99Free — better
Rating3.7 (70 ratings) — better—
Positive reviews56.1% of reviews—
Number of ratings70 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size24 MB57 MB
Age rating4+4+
DeveloperKitt Peak, Inc.V&T TECHNOLOGIES PTY. LTD.

In-app purchases

1 purchases

Trans4motor

One-time1
  • Add Engine Sound$1.99
1 purchases

Explorion | Explore & Learn

One-time1
  • Explorion Premium$9.99

Questions

Is Trans4motor free?
Trans4motor costs $2.99, and also offers in-app purchases.
Is Explorion | Explore & Learn free?
Explorion | Explore & Learn is free to download, with in-app purchases available.
Do Trans4motor or Explorion | Explore & Learn have ads?
Neither Trans4motor nor Explorion | Explore & Learn shows ads.
Which is updated more often, Trans4motor or Explorion | Explore & Learn?
Trans4motor ships an update every 2 months, and Explorion | Explore & Learn weekly. Most recently, Trans4motor was updated on October 11, 2026 and Explorion | Explore & Learn on September 25, 2026.

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