Comparison

Auto Mechanic Bob vs Mechanical Engineering Book

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

Head to head
About

Auto Mechanic Bob

Explore different types of engines with interactive animations and sounds. Test your knowledge with quizzes and practice diagnosing and fixing engine problems to earn certificates.

Highlights
  • Interactive engine animations
  • Engine repair challenges
  • Extensive engine quiz
  • Starting system information
  • Engine forums
  • Printable certificates
Features
Read full description

This is a fun educational app created to help you learn about the many different types of engines used in cars, trucks and small equipment. The first menu shows four types of engines. All of these engines work with colorful working animations and sounds. Four stroke engine Two stroke engine Wankle engine Steam engine   Many of these engines are still currently being used today and others were used in the beginning of the automobile era.  Professional mechanics and students will enjoy the challenge of the Engine quiz and the FIX Engine repair challenge. The next menu has informational pages covering  The electrical starting system.  An engine that needs repair in order for it to work. There is an engine quiz with over 110 different questions. Engine forums Starting system This is a fantastic way to learn about the starting system and related problems. Actual engine starting sounds are used to help you identify starting problems. Fix engine The engine is ready to go, but for many different reasons it won't start and run, you must correctly diagnose the problem part to make the engine run. If you can correctly diagnose and buy the engine parts without over spending you will earn a certificate. Engine quiz With over 110 different and challenging questions to test your mechanical knowledge you will be surprised on what you know or don't know. The more questions that you answer correctly you will move up the different certificate levels, up to Master mechanic. Save and print these certificates to prove your skill level. Engine forums A collection of popular engine forums on the web. It's a great way to learn about these different engines. You can also edit and change these web address to your preferred site. Learning these basic problems can actually help you start you own automobile engine or other small engine.

About

Mechanical Engineering Book

This app provides a comprehensive guide to mechanical engineering, covering fundamental concepts, key terms, and essential formulas. It's designed for students and professionals to deepen their understanding of machine mechanisms and engineering principles.

Highlights
  • Learn mechanical engineering principles
  • Understand machine mechanisms
  • Access engineering formulas and equations
  • Explore engineering facts
  • Covers thermodynamics, materials science, and more
  • Designed for professionals and students
Features
Read full description

Learn Mechanical Engineering is a professional app to Learning Mechanical Engineering which to helps people to understand the working mechanisms of machines. Learn Mechanical Engineering is designed for mechanism as well research by professional engineers. Learn Mechanical Engineering is the study, design, development, construction, and testing of mechanical and thermal sensors and devices, including tools, machines, and machines. Mechanical engineering careers center on creating technology. Learn Mechanical Engineering Terms and lots of Engineering Equations, Engineering Formulas and Engineering Facts, this Engineering App will sure cement of basics to advanced engineering. Topics - Introduction - Thermodynamics - Engineering Materials - Mechanical Measurement - Machine Tools - Casting And Welding - Properties Of Gases - Fuels And Combustion - Power Plant Engineering - Internal Combustion Engines - Steam Engine, Steam And Gas Turbines - Properties Of Steam And Steam - Stress And Strain - Lifting Machines - Flywheel - Heat Transfer - Air Conditioning - Power Transmission - Coupling, Clutch, And Brake - Air Compressors - Fluid Mechanics And Hydraulic Machines - Mechanical Working Of Metals & Metal Sheet - Manufacturing Systems - Unconventional Machining Processes Why Learn Mechanical Engineering Mechanical engineers design and build solutions to a range of problems, improving efficiency across a wide range of industries. By studying mechanical engineering, you can look forward to good job prospects, high salaries, and varied work Mechanical engineering is an engineering branch that combines engineering physics and mathematics principles with materials science, to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the engineering branches. Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more specialized fields of engineering.

Screenshots

Auto Mechanic Bob4 screens
Mechanical Engineering Book4 screens

Verdict

The call

The clearest difference is rating: Mechanical Engineering Book at 4.7 against Auto Mechanic Bob's 1.0. Mechanical Engineering Book also leads on update cadence (every 11 months vs every 103 months) and ratings volume (12 vs 1). Auto Mechanic Bob's advantage is price ($0.99 vs $1.99). On review sentiment, ads, in-app purchases and monetization model 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

Auto Mechanic Bob costs $0.99 and Mechanical Engineering Book $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Mechanical Engineering Book holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Mechanical Engineering Book has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Auto Mechanic Bob ships an update every 103 months, Mechanical Engineering Book every 11 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Auto Mechanic Bob versus Mechanical Engineering Book: the parameters behind the verdict, then further details
ParameterAuto Mechanic BobMechanical Engineering Book
Price$0.99 — better$1.99
Rating1.0 (1 ratings)4.7 (12 ratings) — better
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings112 — better
Update frequencyEvery 103 monthsEvery 11 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.110.0 — better
Further details — not scored
Size20 MB38 MB
Age rating17+4+
DeveloperMichael OMasseyHaroon Khalil

Customer experience

Auto Mechanic Bob

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Mechanical Engineering Book

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Auto Mechanic Bob

No in-app purchases

None

Mechanical Engineering Book

No in-app purchases

Questions

Is Auto Mechanic Bob free?
Auto Mechanic Bob costs $0.99, with no in-app purchases.
Is Mechanical Engineering Book free?
Mechanical Engineering Book costs $1.99, with no in-app purchases.
Which has better reviews, Auto Mechanic Bob or Mechanical Engineering Book?
Mechanical Engineering Book is rated higher. Auto Mechanic Bob averages 1.0 out of 5 from 1 ratings, while Mechanical Engineering Book averages 4.7 from 12 ratings.
Do Auto Mechanic Bob or Mechanical Engineering Book have ads?
Neither Auto Mechanic Bob nor Mechanical Engineering Book shows ads.
Which is updated more often, Auto Mechanic Bob or Mechanical Engineering Book?
Auto Mechanic Bob ships an update every 103 months, and Mechanical Engineering Book every 11 months. Most recently, Auto Mechanic Bob was updated on October 20, 2026 and Mechanical Engineering Book on October 24, 2026.

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