Comparison

Engineering HandBook vs PrepFE

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

Head to head
About

Engineering HandBook

Access essential engineering formulas and concepts on the go. This app covers materials, numbers, mechanics, components, and metal cutting operations, providing accurate calculations for various engineering tasks.

Highlights
  • Engineering formulas and calculations
  • Materials classification and properties
  • Basic and trigonometric calculations
  • Unit conversions
  • Gear drive formulas
  • Metal cutting operation calculations
Features
Read full description

Engineering HandBook allows you to carry engineering concepts where-ever you go. Features available in Engineering handbook are: 1. Materials. 2. Numbers. 3. Mechanics. 4. Engineering Components, and 5. Metal Cutting Components. View various engineering related formulas and calculate values. Calculate accurately and access formulas while on worksite, in meetings, or during Work. Materials features: Classification of categories of ferrous metals (Steel, Iron), Non-ferrous metals and Plastics. Property details of various Elements. Calculate equal and unequal angles as per Indian Standards. Numbers features: Basic mathematical calculations. Trigonometric calculation. Pythagorean theorem. Inch to Millimeter and vice versa convertor. Units of physical quantities. Symbols, and Measures and weights. Mechanics features: Formulas for Gear drive and dimensions. Engineering Components Features: Hole to Shaft and vice versa Convertion. Metal Cutting Operation features: Calculate Folding, edging and Cold bending value. Cutting speed. Machining time. Clearance between die and punch, and Cutting force.

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

Screenshots

Engineering HandBook4 screens
PrepFE4 screens

Verdict

The call

The clearest difference is rating: Engineering HandBook at 4.0 against PrepFE's 2.0. Engineering HandBook also leads on in-app purchases (none vs 9) and update cadence (every 2 weeks vs every 2 months). PrepFE's advantage is ratings volume (57 vs 4). On price, ads 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. Engineering HandBook asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Engineering HandBook holds the better App Store score, 4.0 against 2.0. That said, the two scores are not equally well evidenced: PrepFE has 57 ratings behind it against 4, so its average is the more settled of the two.

UpkeepUpdate frequency

Engineering HandBook ships an update every 2 weeks, PrepFE every 2 months. The most recent releases landed on June 8, 2026 and August 30, 2026 respectively.

Scorecard6 real differences · 4 level
Engineering HandBook versus PrepFE: the parameters behind the verdict, then further details
ParameterEngineering HandBookPrepFE
PriceFreeFree
Rating4.0 (4 ratings) — better2.0 (57 ratings)
Positive reviews—16.7% of reviews
Number of ratings457 — better
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS6.0 — better13.0
Further details — not scored
Size12 MB288 MB
Age rating4+4+
DeveloperRaghu SrinivasPrepFE, Inc.

Customer experience

Engineering HandBook

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%

PrepFE

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

In-app purchases

None

Engineering HandBook

No 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

Questions

Is Engineering HandBook free?
Engineering HandBook is free to download, with no in-app purchases.
Is PrepFE free?
PrepFE is free to download, with in-app purchases available.
Which has better reviews, Engineering HandBook or PrepFE?
Engineering HandBook is rated higher. Engineering HandBook averages 4.0 out of 5 from 4 ratings, while PrepFE averages 2.0 from 57 ratings.
Do Engineering HandBook or PrepFE have ads?
Neither Engineering HandBook nor PrepFE shows ads.
Which is updated more often, Engineering HandBook or PrepFE?
Engineering HandBook ships an update every 2 weeks, and PrepFE every 2 months. Most recently, Engineering HandBook was updated on June 8, 2026 and PrepFE on August 30, 2026.

Other comparisons