Engine LD vs Car Mechanic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Engine LD
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Engine Layout Definitions (Engine LD) Understand how piston–crank geometry impacts engine performance. • Explore how layout changes affect engine displacement, rated power, and dynamic forces. • View detailed graphs and data lists: • Displacement volume vs. crank angle • Dynamic forces vs. crank angle • Export values for spreadsheet analysis or basic FEA (finite element analysis). • Interactive simulation: adjust crank rotation with a slider to visualize dimension effects on engine packaging.
Car Mechanic
Expand your automotive knowledge with this comprehensive app. It features over 300 questions, real-time answers, and practice tests to deepen your understanding of car engineering and parts. Engage with quizzes and learn about tools for mechanics.
- Over 300 automotive questions
- Real-time answers
- ASE practice tests
- Car logo quiz
- Smart trivia on tools
- Car parts section
- Randomized questionnaires
- Offline training
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Study car mechanics without ads. Explore 3,000+ quiz questions and 120 reading lessons, with all quiz levels available from the start. Car Mechanic: Learn & Quiz Pro brings automotive theory, workshop practice and country-specific exam practice together for students, apprentices, technicians and car enthusiasts. WHAT PRO INCLUDES - An ad-free learning experience - All quiz levels unlocked from the start - 3,000+ questions across the included automotive quiz collection - 120 structured reading lessons - Quiz results, answer explanations and progress tracking - A one-time app purchase, with no subscription or additional Pro upgrade required BUILD YOUR AUTOMOTIVE KNOWLEDGE Study engines, fuel systems, cooling and lubrication; brakes and ABS; steering, suspension, wheels and tires; transmissions and drivetrains; automotive electrical and electronic systems; batteries, starting and charging; heating and air conditioning; and hybrid and electric vehicles. PRACTICE WORKSHOP SKILLS Explore safety, tools, measurements, preventive maintenance, diagnostics and repair principles. Review your answers and use explanations to strengthen your understanding. READ 120 STRUCTURED LESSONS Choose from 30 automotive theory lessons and 90 workshop and service lessons. Browse the Library and revisit topics whenever you want to refresh your knowledge. CHOOSE YOUR PRACTICE PATHWAY - United States: ASE A1-A9 practice - Canada: Red Seal automotive practice - Australia: light vehicle mechanic practice - United Kingdom: light vehicle technician practice - New Zealand: light automotive engineering practice LEARN THROUGH VISUAL QUIZZES Identify car parts, workshop tools, car logos and car models. Move between topics freely, with every quiz level unlocked. EXPLORE AND TRACK YOUR LEARNING Read additional material on electric vehicles, automotive electrical systems and braking systems. Track quiz scores and reading progress, then choose what to study next. This app provides independent educational practice. It is not affiliated with or endorsed by ASE or the qualification and examination bodies referenced. It does not award a professional qualification or replace practical training.
Screenshots
Verdict
The clearest difference is update cadence: Car Mechanic at every 2 months against Engine LD's every 5 months. Engine LD's advantage is price ($2.99 vs $5.99) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases 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
Engine LD costs $2.99 and Car Mechanic $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Engine LD ships an update every 5 months, Car Mechanic every 2 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.
| Parameter | Engine LD | Car Mechanic |
|---|---|---|
| Price | $2.99 — better | $5.99 |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 10 MB | 241 MB |
| Age rating | 4+ | 4+ |
| Developer | DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI | E W M W W Shanka Nuwan Bandara Werapitiya |
In-app purchases
Engine LD
No in-app purchases
Car Mechanic
No in-app purchases
Questions
Is Engine LD free?
Is Car Mechanic free?
Do Engine LD or Car Mechanic have ads?
Which is updated more often, Engine LD or Car Mechanic?
Other comparisons
