Comparison

PrepFE vs Mechanical Formula

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

Mechanical Formula

This app provides over 200 essential mechanical engineering formulas and calculations in a user-friendly tool. It's designed to simplify complex concepts and speed up problem-solving for students, professionals, and educators.

Highlights
  • 200+ mechanical engineering formulas
  • Instant calculations
  • Intuitive interface
  • Real-world application explanations
  • Exam preparation aid
  • Lifetime Premium option
Features
Read full description

The Mechanical Engineering Formula & Calculator app brings together 200+ essential mechanical engineering formulas and calculations in one powerful and easy-to-use tool. Designed specifically for mechanical students, professionals, and educators, this app simplifies complex concepts and makes problem-solving faster and more accurate. Developed by engineers for engineers, this app covers a wide range of mechanical engineering topics, helping users understand the principles behind each formula and how they are applied in real-world scenarios. Whether you are studying, revising, or working on-site, this app serves as your reliable engineering companion. With an intuitive interface, you can easily select any calculator, enter the required values, and get instant results with clear output. No complicated steps — just accurate calculations at your fingertips. Perfect for: - Mechanical engineering students - Practicing engineers - Technical instructors - Exam preparation & quick reference Boost your productivity and master mechanical calculations with confidence. In app purchase included : Lifetime Premium Privacy policy : https://chatlyst.in/privacy.html Terms and condition : https://chatlyst.in/tcondition.html

Screenshots

PrepFE4 screens
Mechanical Formula4 screens

Verdict

The call

The clearest difference is rating: Mechanical Formula at 4.7 against PrepFE's 2.0. PrepFE's advantage is update cadence (every 2 months vs every 4 months). On price, ratings volume, ads and in-app purchases 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 and Mechanical Formula sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Mechanical Formula holds the better App Store score, 4.7 against 2.0. Both are backed by a comparable volume of ratings — 57 and 34 respectively.

UpkeepUpdate frequency

PrepFE ships an update every 2 months, Mechanical Formula every 4 months. The most recent releases landed on August 30, 2026 and September 19, 2026 respectively.

Scorecard2 real differences · 8 level
PrepFE versus Mechanical Formula: the parameters behind the verdict, then further details
ParameterPrepFEMechanical Formula
PriceFreeFree
Rating2.0 (57 ratings)4.7 (34 ratings) — better
Positive reviews16.7% of reviews—
Number of ratings57 — better34
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size288 MB42 MB
Age rating4+4+
DeveloperPrepFE, Inc.Kantaben Gorasiya

Customer experience

PrepFE

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

Mechanical Formula

All ratings34 ratings
Positive91.2%
Neutral2.9%
Negative5.9%

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
1 purchases

Mechanical Formula

One-time1
  • Lifetime$9.99

Questions

Is PrepFE free?
PrepFE is free to download, with in-app purchases available.
Is Mechanical Formula free?
Mechanical Formula is free to download, with in-app purchases available.
Which has better reviews, PrepFE or Mechanical Formula?
Mechanical Formula is rated higher. PrepFE averages 2.0 out of 5 from 57 ratings, while Mechanical Formula averages 4.7 from 34 ratings.
Do PrepFE or Mechanical Formula have ads?
Neither PrepFE nor Mechanical Formula shows ads.
Which is updated more often, PrepFE or Mechanical Formula?
PrepFE ships an update every 2 months, and Mechanical Formula every 4 months. Most recently, PrepFE was updated on August 30, 2026 and Mechanical Formula on September 19, 2026.

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