Comparison

PrepFE vs Eng Mechanics

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

Head to head
About

PrepFE

Prepare for the FE Mechanical exam with practice problems and flashcards. Learn by doing with expert-curated content, track your progress, and identify areas for improvement. Study conveniently on your mobile device, anytime, anywhere.

Highlights
  • Practice FE exam questions
  • Interactive practice exams
  • Hundreds of practice questions
  • Detailed step-by-step explanations
  • Reinforce learning with flashcards
  • Breakdown of strengths and weaknesses
Features
Read full description

Don't spend time relearning topics from scratch and using poor resources. Jump right into practice problems and learn by doing! Supplement your learning with flash cards to learn the FE Reference Handbook and be familiar with your discipline's concepts. Take your exam practice on the go and learn with our curated content by engineering experts. Study whenever and wherever it’s convenient with PrepFE™. No need to carry around books and study guides. All you need is your phone and determination. Start your Professional Engineer journey and download the PrepFE - Mechanical app. Install the free version today and jump start your studying! We have provided a limited free version of the app that you can try before deciding to upgrade. This version includes a limited set of practice questions, flash cards, and basic progress metrics. *Practice FE exam questions* *Interactive Practice Exams* *Hundreds of Practice Questions* *Detailed & Step-by-Step Explanations* *Reinforce learning with Flash Cards* *Breakdown of strengths and weaknesses* *Updated for 2020* We have up to date content for the new category specifications: • Mathematics • Probability and Statistics • Ethics and Professional Practice • Engineering Economics • Electricity and Magnetism • Statics • Dynamics, Kinematics, and Vibrations • Mechanics of Materials • Material Properties and Processing • Fluid Mechanics • Thermodynamics • Heat Transfer • Measurements, Instrumentation, and Controls • Mechanical Design and Analysis

About

Eng Mechanics

This app offers a comprehensive collection of mechanics of materials problems and solutions, mirroring common textbook structures. It provides detailed explanations with graphics and links to an online eBook for further study. Access to all problems requires a paid upgrade.

Highlights
  • Mechanics of Materials problems
  • Complete solutions with graphics
  • Organized by textbook sections
  • Links to online eBook
  • Real engineering class problems
  • Updated error corrections
Features
Read full description

Eng Mechanics app provides real homework and test problems for the common engineering course called Mechanics of Materials, Deformable Bodies, or just Mechanics. All problems are organized in sections and chapters common to most textbooks. Each problem has a complete solution with graphics to help you better understand how to solve the problem. Also, each problem has a link to a theory web page for that section at the online eBook (eCoursesBook.com). There is no cost for the online eBook, and it can be accessed outside of the app. The paid version ($3.99) has over 400 problems. There are no ads or in-app purchases. Network connection is required to run the app since all problems are pulled from an online database. Each problem is small (less than 20 k) and are vector-based graphics. All problems have been used in real engineering classes. Problems are accessed through an online database, so if any errors are identified, they will be updated and the app will use the corrected version. This program is copyrighted and cannot be distributed without the author's written consent.

Screenshots

PrepFE4 screens
Eng Mechanics3 screens

Verdict

The call

The clearest difference is review sentiment: Eng Mechanics at 75% against PrepFE's 17%. Eng Mechanics also leads on rating (4.7 vs 2.0) and in-app purchases (none vs 9). PrepFE's advantage is update cadence (every 2 months vs every 12 months) and ratings volume (57 vs 3). On price, ads, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. PrepFE sells 6 one-off in-app purchases. Eng Mechanics asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Eng Mechanics holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: PrepFE has 57 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 17% of PrepFE's written reviews are positive against 75% of Eng Mechanics's.

UpkeepUpdate frequency

PrepFE ships an update every 2 months, Eng Mechanics every 12 months. The most recent releases landed on August 30, 2026 and September 9, 2026 respectively.

Scorecard6 real differences · 4 level
PrepFE versus Eng Mechanics: the parameters behind the verdict, then further details
ParameterPrepFEEng Mechanics
PriceFreeFree
Rating2.0 (57 ratings)4.7 (3 ratings) — better
Positive reviews16.7% of reviews75.0% of reviews — better
Number of ratings57 — better3
Update frequencyEvery 2 months — betterEvery 12 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.09.0 — better
Further details — not scored
Size288 MB21 MB
Age rating4+4+
DeveloperPrepFE, Inc.Kurt Gramoll

Customer experience

PrepFE

All ratings57 ratings
Positive24.6%
Neutral0.0%
Negative75.4%
Written reviews42 reviews
Positive16.7%
Neutral0.0%
Negative83.3%

Eng Mechanics

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

6 purchases

PrepFE

One-time6
  • 1 Month Access Renewal$47.99
  • 1 Month Access2 variants$59.99
  • 3 Months Access Renewal$61.99
Show 3 more
  • 6 Months Access Renewal$75.99
  • 3 Months Access2 variants$79.99
  • 6 Months Access2 variants$99.99
None

Eng Mechanics

No in-app purchases

Questions

Is PrepFE free?
PrepFE is free to download, with in-app purchases available.
Is Eng Mechanics free?
Eng Mechanics is free to download, with no in-app purchases.
Which has better reviews, PrepFE or Eng Mechanics?
Eng Mechanics is rated higher. PrepFE averages 2.0 out of 5 from 57 ratings, while Eng Mechanics averages 4.7 from 3 ratings.
Do PrepFE or Eng Mechanics have ads?
Neither PrepFE nor Eng Mechanics shows ads.
Which is updated more often, PrepFE or Eng Mechanics?
PrepFE ships an update every 2 months, and Eng Mechanics every 12 months. Most recently, PrepFE was updated on August 30, 2026 and Eng Mechanics on September 9, 2026.

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