Comparison

Trans4motor S vs Attracteur

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

Head to head
About

Trans4motor S

Explore the inner workings of various four-stroke aircraft engines through detailed CG animations. Experience realistic engine sounds, throttle control, and interactive modes like cutaway views and engine start-up simulations. Learn about engine mechanics and history.

Highlights
  • Transform between engine types
  • Realistic engine sound and throttle control
  • Cutaway view of engine internals
  • Virtual engine start-up procedure
  • Interactive movie presentations
  • Machine gun firing simulation
Features
Read full description

"Trans4motor S" is the reciprocating aircraft engine simulator. You can operate a wide range of four-stroke engines from the Wright brothers' inline 4 cylinders to the radial, inverted V, W, and H-type on your 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. Relive the development of the glorious reciprocating aircraft engine. https://www.youtube.com/user/Trans4motor https://www.facebook.com/Trans4motor Features 1) Seamlessly transforms into different types of engines Select from Radial to V-type, or V-type to inverted V-type, etc., and watch the running engines transform over continuous CG animation. You can enjoy watching pistons, connecting rods, camshafts, valves, and many other parts rotate, separate, and combine to make a variety of engine forms. 2) Engine sound and throttle control. Developed in technical collaboration with Sound Design Lab, the developer of the innovative engine sound application "RealEngineSim", based on the SDL method of engine sound synthesis, this new feature brings a new level of engine sound synthesis for aircraft. You can experience realistic and powerful engine sounds include, of course, the different numbers of cylinders, the difference between air-cooled and liquid-cooled engines, and the interference sound caused by the rotation of propellers. In addition, a sophisticated aircraft engine physics model is available in this new version. It calculates the engine speed based on the engine torque and rotational resistance due to the air resistance depending on the diameter and number of propellers in real time. Please try the realistic throttle operation. 3) Cutaway mode You can view the inside of the air-cooling fins and crankcase of the running engine by cutting them horizontally and vertically in real-time. 4) Engine start-up mode Turn the starter handle manually, increase the speed of the inertia starter and contact the clutch! In this mode, you can virtually experience the engine start-up procedure. 5) Machine gun mode In this mode, you can test-fire the "Type 97 aircraft machine gun" of the "Sakae" engine installed in the Zero fighter, the "MG 151/20" of the "DB 601" engine installed in the "Messerschmitt Bf 109". You can also learn how the propeller synchronize system works in super slow motion. 6) Interactive Movie ·Four-stroke engines ·Cam and Gear ·Gun ·Sleeve Valve Recorded 4 controllable presentation videos. Additional functions planned in the future. ·R-4360 Wasp Major will be available soon. ·Adding function to import 360° background images (HDRI files). The CG animated engine rotates at one tenth of the actual speed to enable users to learn the structure and to enjoy the visual. This application is based on a representation of the engine specifications available to the public for learning purposes, and is not a precise rendition of the dimensions and design of the actual machine. The company and product names used within the application are generally registered trademarks or trademarks of the respective companies.

About

Attracteur

Explore the captivating realm of mathematical attractors. This application reveals the inherent beauty of chaos through interactive visualizations. It's designed for anyone curious about the intricate patterns found in complex systems.

Highlights
  • Mathematical attractor exploration
  • Chaos theory visualization
  • Interactive learning
  • Educational content
  • Beautiful mathematical patterns
Features
Read full description

Discover the world of Attractor. Math is beautiful.

Screenshots

Trans4motor S4 screens
Attracteur4 screens

Verdict

The call

The clearest difference is review sentiment: Attracteur at 100% against Trans4motor S's 50%. Attracteur also leads on rating (5.0 vs 4.6) and price ($2.99 vs $5.99). Trans4motor S's advantage is update cadence (weekly vs every 25 months) and ratings volume (19 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

Trans4motor S costs $5.99 and Attracteur $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Attracteur holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Trans4motor S has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Trans4motor S's written reviews are positive against 100% of Attracteur's.

UpkeepUpdate frequency

Trans4motor S ships an update weekly, Attracteur every 25 months. Both last shipped on November 3, 2026.

Scorecard6 real differences · 4 level
Trans4motor S versus Attracteur: the parameters behind the verdict, then further details
ParameterTrans4motor SAttracteur
Price$5.99$2.99 — better
Rating4.6 (19 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings19 — better1
Update frequencyWeekly — betterEvery 25 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.1 — better16.6
Further details — not scored
Size127 MB3 MB
Age rating4+4+
DeveloperKitt Peak, Inc.Sylvain Lambert

Customer experience

Trans4motor S

All ratings19 ratings
Positive89.5%
Neutral0.0%
Negative10.5%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Attracteur

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Trans4motor S

No in-app purchases

None

Attracteur

No in-app purchases

Questions

Is Trans4motor S free?
Trans4motor S costs $5.99, with no in-app purchases.
Is Attracteur free?
Attracteur costs $2.99, with no in-app purchases.
Which has better reviews, Trans4motor S or Attracteur?
Attracteur is rated higher. Trans4motor S averages 4.6 out of 5 from 19 ratings, while Attracteur averages 5.0 from 1 ratings.
Do Trans4motor S or Attracteur have ads?
Neither Trans4motor S nor Attracteur shows ads.
Which is updated more often, Trans4motor S or Attracteur?
Trans4motor S ships an update weekly, and Attracteur every 25 months. Most recently, Trans4motor S was updated on November 3, 2026 and Attracteur on November 3, 2026.

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