Comparison

Trans4motor R vs 国家3級自動車整備士 過去問題集

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

Head to head
About

Trans4motor R

Explore and animate four-stroke engines with detailed customization options. Simulate transmissions, edit engine specifications, and experience realistic vehicle physics. Share your creations and learn about engine mechanics through interactive tutorials.

Highlights
  • Seamless engine morphing (inline to V, cylinder count, firing intervals)
  • Full transmission visualization (3-shaft, 2-shaft, dog gearbox)
  • Deep engine specification editing
  • Realistic vehicle physics simulation
  • Community sharing platform for engine designs
  • Interactive learning modes (TechTour)
  • Enhanced, realistic engine sound simulation
Read full description

The definitive successor to the original Trans4motor is finally here — a new installment that lets you freely explore and animate four-stroke engines on your iPad or iPhone. Created for those who love internal-combustion engines and never tire of their rhythm, mechanics, and beauty. 【Seamless Engine Morphing】 Switch from inline to V configurations, alter bank angles, change cylinder counts, and adjust firing intervals. Every change transforms the engine while it continues running. Camshafts split and merge, crank phasing shifts, valve angles move dynamically — a completely new way to experience engines. 【All-New Transmission Simulation】 For the first time in the series, the gearbox itself is fully visualized. ・3-shaft synchromesh transmission ・2-shaft synchromesh transmission ・Dog gearbox (motorcycle-style) Enter tooth counts manually, or let the app generate realistic gear meshes from gear ratios. Follow shift forks, constant-mesh gears, clutch engagement, and truly see how power flows. 【Deep Engine Specification Editing】 Greatly expanded from the original, allowing a far richer expression of each engine’s character. ・Cylinder count, bore, stroke ・Bank angle, mounting angle ・Firing order, firing interval ・Cam drive (belt / chain / gear) ・Valve train (SOHC / DOHC / OHV / VTEC / Desmodromic) ・Valve diameter and included angle (reflected in the CG model) ・Tire width, aspect ratio, wheel diameter (outer diameter calculated automatically) Recreate everything from spirited singles to distinctive 5-cylinder pulses, modern V4 superbikes, and the bold heartbeat of American V8s. 【Realistic Vehicle Physics】 Not just an animation. Torque curves, vehicle mass, gear ratios, and tire diameter are calculated frame by frame to determine vehicle speed. Shift through the gears and feel how the engine and drivetrain connect as acceleration builds. 【Connect with the “Engines” Sharing Platform】 Share your creations with the world. ・Upload / download ・Share to X (formerly Twitter) ・Community “likes” and voting ・Planned competitions Build a community-driven engine library with fellow enthusiasts. 【GearVision Mode】 Gears, shift forks, clutches — see exactly which components are transmitting power at any moment. A visualized power-flow mode revealing the inner workings of each shift. 【TechTour】 A hands-on learning mode evolved from the series’ interactive tutorials. ・Four-stroke fundamentals ・Firing order ・Synchromesh mechanisms Engines become even more fascinating when you understand how they work. 【Enhanced Engine Sound】 With support from Sound Design Lab LLC, this latest audio method combines single-shot, harmonic, and random-noise components to create a natural and realistic engine presence. Differences in cylinder count and firing intervals come through with greater character and detail. Engine sound is included as a standard feature, not an in-app purchase. 【Preset Engines】 Trans4motor R includes 12 preset engines ranging from classic icons to modern super-sport engines and powerful V8s. ※ For learning and presentation purposes, the engine CG animations run at one-tenth of real-world rotational speed. ※ This app reproduces engines based on publicly available specifications for educational use and is not intended to be an exact replica of actual machinery, dimensions, or designs. ※ Company names and product names mentioned in this app are trademarks or registered trademarks of their respective owners.

About

国家3級自動車整備士 過去問題集

Features
Read full description

最新回収録 (令和8年度第1回 2026年10月実施回) 国家3級自動車整備士試験の学科対策を、スマホで! ガソリン・ジーゼルの両区分に対応。令和2年度から令和8年度までの過去問12回分を収録しています。 毎日の学習から試験直前の総復習まで、自分のペースで過去問に取り組める試験対策アプリです。 まずは「今日の10問」から! 毎日10問ずつ出題されるので、通勤・通学や休憩時間にも学習できます。途中で終了しても、続きから再開できます。 じっくり取り組みたいときは、ガソリン・ジーゼルの区分と問題集を選んで演習。学習モードでは1問ごとに正誤と正答を確認でき、本番モードでは解答終了後にまとめて結果を確認できます。 さらに、選択した問題集からランダムに10問を出題する「ミックス10」も搭載。出題順に頼らず、知識を確認したいときに役立ちます。 間違えた問題は自動で保存! ガソリン・ジーゼル、問題集別に絞り込み、苦手な問題を繰り返し復習できます。復習で2回正解した問題は「2回正解」に移動し、後から見直すこともできます。 気になる問題には「復習ピン」を付けて保存。試験前にもう一度確認したい問題を、自分でまとめておけます。 成績履歴では、これまでの得点や解答内容を振り返れます。1問以上解いた日を記録する連続学習記録で、毎日の取り組みも確認できます。 自動車整備士養成校で学んでいる方、工業高校の方、働きながら資格取得を目指す方、試験前に過去問を解き直したい方におすすめです。 国家3級自動車整備士試験の合格に向けて、今日の10問から始めましょう! 本アプリには広告が表示されます。 広告を非表示にして学習したい方には、有料の広告非表示オプションをご用意しています。内容はアプリ内でご確認ください。 利用規約:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Trans4motor R4 screens
国家3級自動車整備士 過去問題集4 screens

Verdict

The call

The clearest difference is price: 国家3級自動車整備士 過去問題集 at Free against Trans4motor R's $7.99. Trans4motor R's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence, 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

国家3級自動車整備士 過去問題集 is free to download; Trans4motor R costs $7.99 up front. 国家3級自動車整備士 過去問題集 sells 1 in-app purchase, starting at $1.99 per month. Trans4motor R asks for nothing beyond the download.

UpkeepUpdate frequency

Trans4motor R ships an update every 2 weeks, 国家3級自動車整備士 過去問題集 every 8 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Trans4motor R versus 国家3級自動車整備士 過去問題集: the parameters behind the verdict, then further details
ParameterTrans4motor R国家3級自動車整備士 過去問題集
Price$7.99Free — better
Rating4.6 (11 ratings) — better—
Positive reviews64.0% of reviews—
Number of ratings11 — better—
Update frequencyEvery 2 weeksEvery 8 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size178 MB19 MB
Age rating4+4+
DeveloperKitt Peak, Inc.Tatsuki Kato

In-app purchases

None

Trans4motor R

No in-app purchases

1 purchases

国家3級自動車整備士 過去問題集

Subscriptions1
  • 広告非表示7 Days trial$1.991 Month

Questions

Is Trans4motor R free?
Trans4motor R costs $7.99, with no in-app purchases.
Is 国家3級自動車整備士 過去問題集 free?
国家3級自動車整備士 過去問題集 is free to download, with in-app purchases available.
Do Trans4motor R or 国家3級自動車整備士 過去問題集 have ads?
国家3級自動車整備士 過去問題集 shows ads; Trans4motor R does not.
Which is updated more often, Trans4motor R or 国家3級自動車整備士 過去問題集?
Trans4motor R ships an update every 2 weeks, and 国家3級自動車整備士 過去問題集 every 8 days. Most recently, Trans4motor R was updated on November 8, 2026 and 国家3級自動車整備士 過去問題集 on November 5, 2026.

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