Comparison

Trans4motor vs Chatom Baptist

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

Chatom Baptist

Connect with Chatom Baptist Church through their mobile application. Access church information, explore the website, and engage with social media content directly from your device.

Highlights
  • Church information access
  • Website integration
  • Social media links
  • Mobile connectivity
Features
Read full description

Welcome to Chatom Baptist Church Mobile! Make sure you check us out, check out the website and even our social media! Mobile app version: 6.21.1

Screenshots

Trans4motor4 screens
Chatom Baptist3 screens

Verdict

The call

The clearest difference is price: Chatom Baptist at Free against Trans4motor's $2.99. Chatom Baptist also leads on review sentiment (100% vs 56%) and rating (5.0 vs 3.7). Trans4motor's advantage is ratings volume (70 vs 3). On update cadence, ads, 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

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

ReceptionRating · Positive reviews · Number of ratings

Chatom Baptist 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 3, so its average is the more settled of the two. Written reviews point the same way: 56% of Trans4motor's written reviews are positive against 100% of Chatom Baptist's.

UpkeepUpdate frequency

Trans4motor ships an update every 2 months, Chatom Baptist every 3 months. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

Scorecard6 real differences · 4 level
Trans4motor versus Chatom Baptist: the parameters behind the verdict, then further details
ParameterTrans4motorChatom Baptist
Price$2.99Free — better
Rating3.7 (70 ratings)5.0 (3 ratings) — better
Positive reviews56.1% of reviews100.0% of reviews — better
Number of ratings70 — better3
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple TV — better
Requires iOS15.0 — better15.1
Further details — not scored
Size24 MB52 MB
Age rating4+4+
DeveloperKitt Peak, Inc.Chatom Baptist Church, Inc.

Customer experience

Trans4motor

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

Chatom Baptist

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Trans4motor

One-time1
  • Add Engine Sound$1.99
None

Chatom Baptist

No in-app purchases

Questions

Is Trans4motor free?
Trans4motor costs $2.99, and also offers in-app purchases.
Is Chatom Baptist free?
Chatom Baptist is free to download, with no in-app purchases.
Which has better reviews, Trans4motor or Chatom Baptist?
Chatom Baptist is rated higher. Trans4motor averages 3.7 out of 5 from 70 ratings, while Chatom Baptist averages 5.0 from 3 ratings.
Do Trans4motor or Chatom Baptist have ads?
Neither Trans4motor nor Chatom Baptist shows ads.
Which is updated more often, Trans4motor or Chatom Baptist?
Trans4motor ships an update every 2 months, and Chatom Baptist every 3 months. Most recently, Trans4motor was updated on October 15, 2026 and Chatom Baptist on September 30, 2026.

Other comparisons