Comparison

Circuitry vs Engineering & FE Prep

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

Head to head
About

Circuitry

Build and simulate electronic circuits in an intuitive 3D environment. This app offers lightning-fast analysis and a user-friendly interface, making complex engineering accessible. Circuits are saved as documents for easy sharing and management across devices.

Highlights
  • 3D circuit building
  • GPU-accelerated analysis
  • Intuitive 3D interface
  • Document-based circuit files
  • Component placement and connection
  • Resistor, voltage source, light bulb components
Features
Read full description

Welcome to Circuitry - the world's first and only 3D circuit builder! INSANELY FAST Circuitry uses an optimized, GPU-accelerated network analysis algorithm that will blow your mind. It can calculate the voltages and currents of even the largest circuits in the blink of an eye - an insanely fast blinking eye! SUPER DUPER EASY TO USE While most circuit simulators are stuck in the stone age when it comes to usability, Circuitry takes you on a time-travel journey to the future. Its' 3D interface and intuitive controls will instantly feel familiar - no lengthy tutorials required. DOCUMENT-BASED Every circuit you build in Circuitry is a file. That way, they integrate perfectly into your existing files and can be used exactly the same way: you can duplicate and modify them, share them, and they are available to you on all your devices. HOW TO USE: 1. Place components by dragging from the toolkit to the canvas. 2. Connect components by tapping the sides of the components in cabling mode. 3. Delete or modify components by long pressing on them. AVAILABLE COMPONENTS: - Resistor - Voltage source - Light bulb

About

Engineering & FE Prep

Prepare for your Fundamentals of Engineering (FE) exam with this comprehensive study tool. Review key engineering topics, practice with quizzes and exams, and analyze your performance to identify areas for improvement. Tailored for various engineering disciplines, it offers on-the-go learning to help you pass with confidence.

Highlights
  • 10+ Engineering topics reviewed
  • Practice exams
  • Test analysis with score and missed questions
  • Flashcards
  • Review over 15+ Engineering topics and quizzes
Features
Read full description

Worried about your Fundamentals of Engineering exam? Need to quickly review and prep for Engineering exams or specific subjects? EnginPeer's 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. Some topics are tailored for the Civil FE Exam, however, most subjects are found on other exams as well, such as Mechanical, Environmental, Chemical, Industrial, and more! 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: - 10+ 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 and Statistics - Engineering Economics - Statics - Dynamics - Fluid Mechanics - Hydraulics - Mechanics of Materials - Geotechnical Engineering - Structural Engineering - Surveying - Transportational Engineering - Construction Engineering

Screenshots

Circuitry4 screens
Engineering & FE Prep4 screens

Verdict

The call

The clearest difference is rating: Engineering & FE Prep at 4.5 against Circuitry's 3.9. Engineering & FE Prep also leads on update cadence (every 2 weeks vs every 4 months). Circuitry's advantage is in-app purchases (none vs 1). On price, review sentiment, ratings volume and ads 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. Engineering & FE Prep sells 1 one-off in-app purchase. Circuitry asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Engineering & FE Prep holds the better App Store score, 4.5 against 3.9. Both are backed by a comparable volume of ratings — 155 and 171 respectively. Written reviews point the same way: 54% of Circuitry's written reviews are positive against 62% of Engineering & FE Prep's.

UpkeepUpdate frequency

Circuitry ships an update every 4 months, Engineering & FE Prep every 2 weeks. The most recent releases landed on September 13, 2026 and September 15, 2026 respectively.

Scorecard4 real differences · 6 level
Circuitry versus Engineering & FE Prep: the parameters behind the verdict, then further details
ParameterCircuitryEngineering & FE Prep
PriceFreeFree
Rating3.9 (155 ratings)4.5 (171 ratings) — better
Positive reviews54.3% of reviews61.5% of reviews — better
Number of ratings155171 — better
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size35 MB102 MB
Age rating4+4+
DeveloperRaffael KaehnEnginPeers LLC

Customer experience

Circuitry

All ratings155 ratings
Positive68.4%
Neutral12.9%
Negative18.7%
Written reviews35 reviews
Positive54.3%
Neutral14.3%
Negative31.4%

Engineering & FE Prep

All ratings171 ratings
Positive86.0%
Neutral5.3%
Negative8.8%
Written reviews13 reviews
Positive61.5%
Neutral0.0%
Negative38.5%

Bugs and requests

Circuitry

Reported bugs

6 issues
  • App crashes on launch
  • App doesn't work after download
  • Blank white screen on opening
  • App won't open, only shows a folder
  • Lights won't turn on
Show 1 more
  • Cannot close circuits properly

Requested features

14 requests
  • Add more components (diodes, transistors, capacitors, inductors, speakers, microphones, resistors, switches, LEDs, displays, transformers)
  • Add labels/names for components
  • Add intensity and voltage for cables
  • Add undo/redo buttons
  • Add tutorials or guidance videos
Show 9 more
  • Allow moving placed components
  • Add polarity for components
  • Add graphical representation of current flow
  • Add export of 2D schematic
  • Support DC and AC circuits
  • Allow use of virtual meters
  • Add oscilloscope function (graph vs time)
  • Improve UI intuitiveness
  • Add sample circuits

Engineering & FE Prep

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Circuitry

No in-app purchases

1 purchases

Engineering & FE Prep

One-time1
  • Premium Content$4.99

Questions

Is Circuitry free?
Circuitry is free to download, with no in-app purchases.
Is Engineering & FE Prep free?
Engineering & FE Prep is free to download, with in-app purchases available.
Which has better reviews, Circuitry or Engineering & FE Prep?
Engineering & FE Prep is rated higher. Circuitry averages 3.9 out of 5 from 155 ratings, while Engineering & FE Prep averages 4.5 from 171 ratings.
Do Circuitry or Engineering & FE Prep have ads?
Neither Circuitry nor Engineering & FE Prep shows ads.
Which is updated more often, Circuitry or Engineering & FE Prep?
Circuitry ships an update every 4 months, and Engineering & FE Prep every 2 weeks. Most recently, Circuitry was updated on September 13, 2026 and Engineering & FE Prep on September 15, 2026.

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