Comparison

Electrical Engineering vs P&ID

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

Head to head
About

Electrical Engineering

This app offers a comprehensive suite of electrical calculations and conversions for professionals and students. It handles diverse units and provides precise results for various electrical engineering tasks, including voltage, current, power, and more.

Highlights
  • 60 Electrical Calculators
  • 16 Electrical Converters
  • Voltage, Current, Resistance, Power calculations
  • kVA to Amps and Amps to kVA conversions
  • Single and Three Phase Power calculations
  • Star to Delta & Delta to Star conversions
  • Unit handling for diverse electrical measurements
Features
Read full description

Unlock the Power of Electrical Calculations! Access 60 Electrical Calculators, 16 Electrical Converters, and comprehensive formulas with multiple units as an in-app purchase. Key Features: • Voltage Calculator • Current Calculator • Resistance Calculator • Power Calculator • (Includes Voltage Drop Calculator - NEW!) • kVA to Amps (Single Phase & Three Phase) • Amps to kVA (Single Phase & Three Phase) • Single Phase & Three Phase Power Calculators • Horsepower Calculators (DC, Single Phase, Three Phase) • Efficiency Calculators (DC, Single Phase, Three Phase) • Power Factor Calculators (Single Phase & Three Phase) • Luminous Intensity and Flux Calculators • Energy Storage Calculators (Resistance, Inductance, Capacitance) • Star to Delta & Delta to Star Conversions • Reactance Calculators (Inductive & Capacitive) • Resonant Frequency, Inductor & Capacitor Sizing Equations • Series and Parallel Resistance, Inductance, and Capacitance Calculators • Unknown Resistance and Capacitance Calculations • Neutral Current for 3-Phase Unbalanced Loads • Characteristic Impedance Calculations (Parallel & Coaxial) • Transformer Calculator • Voltage Divider & RMS Calculations ...and much more! Why Choose This App? Whether your input is in amps or milliamps, volts or kilovolts, or watts or kilowatts, the App seamlessly handles diverse units and provides precise results with multiple unit options. Perfect for professionals and students alike! Electrical Converters • Field Strength Converter • Electrical Potential Converter • Resistance and Resistivity Converters • Conductance and Conductivity Converters • Capacitance and Inductance Converters • Charge Converters: Handles conversions for electrical charge, including: • Linear Charge Density • Surface Charge Density • Volume Charge Density • Linear Current Density • Surface Current Density • Power Converter

About

P&ID

Master the art of reading and interpreting Piping and Instrumentation Diagrams (P&IDs) with this engaging trivia quiz. Test your knowledge of P&ID symbols and their applications through interactive quizzes with detailed explanations and real-world examples. Learn at your own pace with multiple difficulty levels and offline mode.

Highlights
  • Interactive P&ID symbol quizzes
  • Symbol categorization
  • Detailed explanations and examples
  • Multiple difficulty levels
  • Offline learning mode
Features
Read full description

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Master the art of reading and interpreting Piping and Instrumentation Diagrams (P&IDs) with P&ID Trivia! This engaging trivia quiz app is designed for engineers, students, and industry professionals looking to enhance their knowledge of P&ID symbols and their applications. Key Features: Interactive Quizzes: Test your skills with hundreds of questions on P&ID symbols, including valves, instruments, pumps, and more. Symbol Categories: Learn and identify symbols from various categories such as piping, process equipment, instrumentation, and control systems. Learn as You Play: Get detailed explanations and real-world examples after each question to deepen your understanding Multiple Difficulty Levels: Start as a beginner and advance to expert-level challenges. Offline Mode: Learn anytime, anywhere, without the need for an internet connection. Perfect for students, professionals, and anyone working in engineering, manufacturing, or process industries. With P&ID Trivia, you'll gain confidence in reading diagrams and understanding process flows like a pro. Download now and become a P&ID expert! Download Piping and Instrumentation Diagrams (P&IDs) today and see how many like you can identify like: Hand-Operated Gate Valve, Gate Valve, Closed Gate Valve, Hand-Operated Globe Valve, Globe Valve, Rotary Valve, Needel Valve, Control Valve, Piston-Operated Valve, Back Pressure Regulator, Plug or C**k Valve, Check Valve, Butterfly Valve, Flanged Valve, Angle Valve Hand-Operated, Angle Globe Valve, Relief Valve, Angle Valve, Angle Blowdown Valve, Ball, Normally Closed Ball, Diaghragm, Plug Valve, Check Valve, Solenoid Valve, Hydraulic Valve, Motor-Operated Valve, Pilot Gate Valve, Weight Gate Valve, Powered Valve, Float-Operated Valve, Needle Valve, 3-Way Valve, 3-Way Plug Valve, Diaphragm Valve, 4-way Plug Valve, 4-way Valve, Electro-Hydraulic Valve, Balanced Diaphragm Gate Valve, Spring Gate Valve, Ram Valve, Slide Valve, Metering Coke, Knife Valve, Excess Flow Valve, Post Indicator, Self Draining Valve, Pinch Valve, Minimum Flow Valve, Auto Recirculation, Gauge, Bleeder Valve, Integrated Block Valve, Maual Integrated Valve, Orifice, Rotameter, Quarter Turn Valve Double Acting, Quarter Turn Valve Spring Acting, Self-Operating Release Valve, Indicator, Behind Control, On Central Control, On Local Control Pane, Behind a Local Control, Odometer, Pressure Gauge, Flowmeter, Thermometer, Shared Indicator, Displayed Configurable, Computer Indicator, Programmable Indicator, Displayed Programmable Device, Computer, Unit Control Panel, Temp Indicator, Temp Transmitter, Temp Recorder, Temp Controller, Flow Indicator, Flow Transmitter, Flow Recorder, Flow Controller, Level Indicator, Pressure Indicator, Level Transmitter, Level Recorder, Level Controlle, Pressure Transmitter, Pressure Recorder, Pressure Controller, Pressure Indicator, Pressure Recording, Level Alarm, Flow Element, Temperature Element, Level Gauge, Analyzer Transmitter, Transducer, Specialty Item, Sampler, Straightening Vanes, Diaphragm Meter, Rotary Meter, Magnetic, Pitot Tube Type Flow, Pitot Tube, Wedge Meter, Target Meter, Weir Meter, Ultrasonic Meter, V-cone Meter, Venturi Meter, Quick Change, Turbine Meter, Rotometer, Double, Steam Traced, Venturi, Flowmeter, Vortex Sensor, And Gate, Or Gate, Not Gate, Correcting Element, Diamond, Pressure Gauges, Thermometers, Averaging Pitot Tube, Level Meter, Coriolis Flow Sensor, Flow Nozzle Meter, Flume Meter, Manhole, Socket Connection, Support Bracket, Support Leg, Support Ring, Support Skirt, Compressor, Reciprocating Compressor, Compressor silencers, Centrifugal, Rotary Compressor, Rotory Compressor and silencers, Liquid ring Compressor, Centrifugal Compressor, Centrifugal blower, Axial Compressor, Centrifugal pump, Gas blower, Vertical pump, Liquid ring vacuum pump

Screenshots

Electrical Engineering4 screens
P&ID4 screens

Verdict

The call

The clearest difference is ads: P&ID at none against Electrical Engineering's shown. P&ID also leads on update cadence (every 2 weeks vs every 4 months). Electrical Engineering's advantage is review sentiment (33% vs 0%) and rating (4.7 vs 4.3). On price, in-app purchases, 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. Electrical Engineering sells 2 one-off in-app purchases and P&ID sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Electrical Engineering holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Electrical Engineering has 252 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 33% of Electrical Engineering's written reviews are positive against 0% of P&ID's.

UpkeepUpdate frequency

Electrical Engineering ships an update every 4 months, P&ID every 2 weeks. The most recent releases landed on October 11, 2026 and October 20, 2026 respectively.

Scorecard5 real differences · 5 level
Electrical Engineering versus P&ID: the parameters behind the verdict, then further details
ParameterElectrical EngineeringP&ID
PriceFreeFree
Rating4.7 (252 ratings) — better4.3 (6 ratings)
Positive reviews33.3% of reviews — better0.0% of reviews
Number of ratings252 — better6
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.617.0 — better
Further details — not scored
Size49 MB6 MB
Age rating4+4+
DeveloperV PUGAZHENTHIForwa Elade Wunde

Customer experience

Electrical Engineering

All ratings252 ratings
Positive94.0%
Neutral2.0%
Negative4.0%
Written reviews12 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

P&ID

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

2 purchases

Electrical Engineering

One-time2
  • 16 Electrical Converters$0.99
  • Electrical Engineering Pack$3.99
3 purchases

P&ID

Subscriptions3
  • Month$9.991 Month
  • 6 months$19.996 Months
  • Year$29.991 Year

Questions

Is Electrical Engineering free?
Electrical Engineering is free to download, with in-app purchases available.
Is P&ID free?
P&ID is free to download, with in-app purchases available.
Which has better reviews, Electrical Engineering or P&ID?
Electrical Engineering is rated higher. Electrical Engineering averages 4.7 out of 5 from 252 ratings, while P&ID averages 4.3 from 6 ratings.
Do Electrical Engineering or P&ID have ads?
Electrical Engineering shows ads; P&ID does not.
Which is updated more often, Electrical Engineering or P&ID?
Electrical Engineering ships an update every 4 months, and P&ID every 2 weeks. Most recently, Electrical Engineering was updated on October 11, 2026 and P&ID on October 20, 2026.

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