Comparison

Trans4motor vs Sensei Sigma Application

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

Sensei Sigma Application

Enhance your decision-making abilities with interactive challenges, daily quests, and structured learning modules. Gain personalized insights to track your progress and develop critical skills. Unlock premium content for an even richer learning experience.

Highlights
  • Personalized learning and calibration
  • Daily practice quests
  • Interactive challenges
  • Learning modules
  • Decision and performance insights
  • Premium membership options
Features
Read full description

Sensei Sigma is a learning and practice platform designed to help you build better decision-making skills through interactive challenges, daily quests, learning modules, and personalized insights. Learn concepts step by step, practice through challenges, and develop your skills through consistent practice. Learn. Practice. Grow. Key features: • Personalized learning and calibration • Daily practice quests • Interactive challenges • Learning modules • Decision and performance insights • Premium Compass membership with additional content and features. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Trans4motor4 screens
Sensei Sigma Application3 screens

Verdict

The call

The clearest difference is price: Sensei Sigma Application at Free against Trans4motor's $2.99. Sensei Sigma Application also leads on rating (5.0 vs 3.7) and update cadence (weekly vs every 2 months). Trans4motor's advantage is ratings volume (70 vs 1). 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

Sensei Sigma Application is free to download; Trans4motor costs $2.99 up front. Trans4motor sells 1 one-off in-app purchase and Sensei Sigma Application sells 7 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sensei Sigma Application holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Trans4motor has 70 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Trans4motor ships an update every 2 months, Sensei Sigma Application weekly. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Trans4motor versus Sensei Sigma Application: the parameters behind the verdict, then further details
ParameterTrans4motorSensei Sigma Application
Price$2.99Free — better
Rating3.7 (70 ratings)5.0 (1 ratings) — better
Positive reviews56.1% of reviews—
Number of ratings70 — better1
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size24 MB144 MB
Age rating4+17+
DeveloperKitt Peak, Inc.Sensei Sigma Inc

Customer experience

Trans4motor

All ratings70 ratings
Positive68.6%
Neutral5.7%
Negative25.7%
Written reviews114 reviews
Positive56.1%
Neutral14.0%
Negative29.8%

Sensei Sigma Application

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Trans4motor

One-time1
  • Add Engine Sound$1.99
7 purchases

Sensei Sigma Application

Subscriptions3
  • Compass Lite$4.991 Month
  • Compass Plus$9.991 Month
  • Compass Pro$14.991 Month
One-time4
  • Compass Credit Pack - Small$2.99
  • Practice Coin Pack - Medium$4.99
  • Compass Credit Pack - Large$6.99
Show 1 more
  • Practice Coin Pack - Large$9.99

Questions

Is Trans4motor free?
Trans4motor costs $2.99, and also offers in-app purchases.
Is Sensei Sigma Application free?
Sensei Sigma Application is free to download, with in-app purchases available.
Which has better reviews, Trans4motor or Sensei Sigma Application?
Sensei Sigma Application is rated higher. Trans4motor averages 3.7 out of 5 from 70 ratings, while Sensei Sigma Application averages 5.0 from 1 ratings.
Do Trans4motor or Sensei Sigma Application have ads?
Neither Trans4motor nor Sensei Sigma Application shows ads.
Which is updated more often, Trans4motor or Sensei Sigma Application?
Trans4motor ships an update every 2 months, and Sensei Sigma Application weekly. Most recently, Trans4motor was updated on October 15, 2026 and Sensei Sigma Application on October 9, 2026.

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