Comparison

Mechanical FE Prep vs Engineering Formulas

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

Head to head
About

Mechanical FE Prep

Prepare for Mechanical Engineering courses and the Fundamentals of Engineering exam with this comprehensive mobile study tool. Access over 15 engineering topics, practice exams, and detailed test analysis to master the material and pass with confidence.

Highlights
  • 15+ Engineering topics
  • Practice exams
  • Test analysis
  • Flashcards
  • Subject review
  • Exam prep
Features
Read full description

Worried about your Mechanical Engineering courses or the Fundamentals of Engineering exam? Need to quickly review and prep for Engineering exams or specific subjects? EnginPeer's Mech Engineering Prep app will help you pass with flying colors - all on the go! Everything you need to know to ace your FE, right at your fingertips. Install the free version to get started on studying over 15+ Engineering topics and quizzes, all covered in the FE. Unlock more content and quizzes as you go. EnginPeer's FE Review app includes: - 15+ Engineering topics, thoroughly broken into manageable sections to review. - Practice exams to perfect your knowledge. - Test analysis after each attempt - View your score, which questions you missed, and review them! - and Flashcards! Reviewed categories include: - Engineering Ethics and Practices - Mathematics - Probability & Statistics - Engineering Economics - Electricity & Magnetism - Statics - Dynamics & Vibrations - Mechanics of Materials - Materials Properties - Fluid Mechanics - Thermodynamics - Heat Transfer - Measurement & Controls - Mechanical Design & Analysis

About

Engineering Formulas

Features
Read full description

EngiRef is the all-in-one engineering reference app that works 100% offline. Access formulas, material properties, reference tables, and a powerful unit converter - all without internet connection. FORMULA LIBRARY Browse 140+ essential engineering formulas organized by discipline: • Mechanical Engineering: stress, strain, torque, power, gear ratios, spring design • Electrical Engineering: Ohm's law, AC/DC circuits, impedance, resonance • Civil/Structural: beam deflection, Euler buckling, Manning's equation • Thermodynamics: ideal gas law, Carnot efficiency, heat transfer • Fluid Mechanics: Bernoulli, Reynolds number, Darcy-Weisbach • Materials Science: Young's modulus, Poisson's ratio, fatigue analysis BUILT-IN CALCULATOR Enter your values and get instant results. Every calculation shows step-by-step solutions so you understand the process, not just the answer. Perfect for learning and exam preparation. MATERIALS DATABASE Access properties for 55+ engineering materials: • Carbon steels (AISI 1018, 1045, 4140, 4340) • Stainless steels (304, 316, 17-4 PH) • Aluminum alloys (6061-T6, 7075-T6, 2024-T3) • Titanium, copper, nickel alloys • Plastics (ABS, HDPE, Nylon, PEEK, Delrin) • Composites, concrete, and wood Compare up to 3 materials side-by-side with density, tensile strength, elastic modulus, thermal conductivity, and more. REFERENCE TABLES • Bolt specifications: Metric M3-M36, SAE/Imperial sizes • Pipe schedules: NPS dimensions and wall thickness • Wire gauges: AWG 0000-40 with ampacity ratings UNIT CONVERTER Convert between 16 categories including length, pressure, temperature, force, energy, flow rate, and viscosity. Accessible from any screen via slide-over panel. PHYSICAL CONSTANTS Quick reference for 34 constants including speed of light, gravitational constant, Boltzmann constant, Avogadro's number, and more. QUIZ MODE Test your knowledge with flashcard-style quizzes. Track progress across all disciplines. Prepare for FE and PE exams. ADDITIONAL FEATURES • Dark and light themes (follows system setting) • Favorites to bookmark frequently used formulas • Calculation history with timestamps • Create and save custom formulas • Export and share your data • LaTeX formula rendering • iPad-optimized layouts PRIVACY FOCUSED EngiRef collects zero personal data. No analytics, no ads. All your calculations and favorites stay on your device. We believe engineering tools should respect your privacy. Whether you are a student preparing for exams, a working engineer needing quick field reference, or a technician looking for material specs, EngiRef puts essential engineering knowledge in your pocket. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Mechanical FE Prep4 screens
Engineering Formulas4 screens

Verdict

The call

The clearest difference is update cadence: Mechanical FE Prep at every 5 days against Engineering Formulas's every 2 months. Mechanical FE Prep also leads on iOS requirement (12.0 vs 15.1). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mechanical FE Prep sells 1 one-off in-app purchase and Engineering Formulas sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Mechanical FE Prep ships an update every 5 days, Engineering Formulas every 2 months. The most recent releases landed on July 26, 2026 and August 18, 2026 respectively.

Scorecard2 real differences · 8 level
Mechanical FE Prep versus Engineering Formulas: the parameters behind the verdict, then further details
ParameterMechanical FE PrepEngineering Formulas
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 5 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size67 MB45 MB
Age rating4+12+
DeveloperEnginPeers LLCMobin Akhter

In-app purchases

1 purchases

Mechanical FE Prep

One-time1
  • Premium$4.99
3 purchases

Engineering Formulas

Subscriptions2
  • Weekly Premium$4.997 Days
  • Yearly Premium$29.991 Year
One-time1
  • Lifetime Access$54.99

Questions

Is Mechanical FE Prep free?
Mechanical FE Prep is free to download, with in-app purchases available.
Is Engineering Formulas free?
Engineering Formulas is free to download, with in-app purchases available.
Do Mechanical FE Prep or Engineering Formulas have ads?
Neither Mechanical FE Prep nor Engineering Formulas shows ads.
Which is updated more often, Mechanical FE Prep or Engineering Formulas?
Mechanical FE Prep ships an update every 5 days, and Engineering Formulas every 2 months. Most recently, Mechanical FE Prep was updated on July 26, 2026 and Engineering Formulas on August 18, 2026.

Other comparisons