Comparison

Trans4motor vs Teach Savvy

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
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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

Teach Savvy

Features
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TeachSavvy: Your Personal Companion for Thriving in Teaching As a teacher, you dedicate yourself to shaping young minds, but let’s face it—your journey is not without its challenges. Subjective evaluations, limited resources, and a lack of personalized support can make teaching feel more stressful than rewarding. That’s where TeachSavvy, your new mobile companion, comes in. Designed with educators like you in mind, TeachSavvy is here to empower, uplift, and help you rediscover the joy of teaching. What Can TeachSavvy Do for You? • Put You in Control: With TeachSavvy’s self-assessment tools, you can reflect on your teaching style, strengths, and areas for growth—all on your terms, at your pace. • Connect You with Peers: Collaborate with fellow educators to share experiences, exchange solutions, and tackle challenges. You’re never alone in your journey. • Provide Actionable Insights: Using AI, TeachSavvy gives you personalized recommendations to help you grow and improve in ways that matter to you. • Make Evaluations Stress-Free: Forget the anxiety of rushed or subjective evaluations. TeachSavvy offers a supportive, growth-focused approach that prioritizes your well-being. Why You’ll Love TeachSavvy: • Tailored Just for You: Every feature is designed to meet teachers' unique challenges, especially in underrepresented and underserved schools. • Built on Community: Connect with a network of educators who understand your world. Learn from their insights while sharing your expertise. • Focused on Growth: TeachSavvy helps you turn challenges into opportunities, making teaching not just your profession, but your passion once again. Imagine This: You open TeachSavvy after a long day, reflecting on what worked well and what could be better in your classroom. The app suggests practical tips based on your goals and even connects you with a fellow teacher who’s successfully navigated similar challenges. The next day, you try out new strategies, feeling supported, confident, and energized. That’s the power of TeachSavvy—a partner that listens, guides, and grows with you. Let TeachSavvy Work for You: • Personalized Reflection: Track your progress and celebrate every milestone. • Collaborative Growth: Join a supportive community that lifts each other. • Data-Driven Support: Let AI guide you with insights tailored to your journey. Your happiness matters—your impact matters. With TeachSavvy, you can feel confident, supported, and empowered every step of the way. Download TeachSavvy today and start thriving, because when you succeed, your students succeed too.

Screenshots

Trans4motor4 screens
Teach Savvy4 screens

Verdict

The call

The clearest difference is price: Teach Savvy at Free against Trans4motor's $2.99. Teach Savvy also leads on in-app purchases (none vs 1) and update cadence (every 4 days vs every 2 months). On 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

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

UpkeepUpdate frequency

Trans4motor ships an update every 2 months, Teach Savvy every 4 days. The most recent releases landed on October 20, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 7 level
Trans4motor versus Teach Savvy: the parameters behind the verdict, then further details
ParameterTrans4motorTeach Savvy
Price$2.99Free — better
Rating3.7 (70 ratings) — better—
Positive reviews56.1% of reviews—
Number of ratings70 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size24 MB80 MB
Age rating4+17+
DeveloperKitt Peak, Inc.DRIPBL STEAM ANALYTICS LLC

In-app purchases

1 purchases

Trans4motor

One-time1
  • Add Engine Sound$1.99
None

Teach Savvy

No in-app purchases

Questions

Is Trans4motor free?
Trans4motor costs $2.99, and also offers in-app purchases.
Is Teach Savvy free?
Teach Savvy is free to download, with no in-app purchases.
Do Trans4motor or Teach Savvy have ads?
Neither Trans4motor nor Teach Savvy shows ads.
Which is updated more often, Trans4motor or Teach Savvy?
Trans4motor ships an update every 2 months, and Teach Savvy every 4 days. Most recently, Trans4motor was updated on October 20, 2026 and Teach Savvy on September 30, 2026.

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