Comparison

Electrodoc Pro vs 2017 Master Electrician Ref.

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

Head to head
About

Electrodoc Pro

This app is a comprehensive toolkit for electronics enthusiasts and professionals. It offers a wide range of calculators, reference tables, and pin-out diagrams for various electronic components and connectors. Simplify complex calculations and access essential information quickly.

Highlights
  • Resistor color code lookup
  • Ohm's Law calculator
  • LED resistor calculator
  • NE555 timer calculator
  • Extensive port pin-out diagrams
  • Electronics reference tables
Features
Read full description

Electrodoc Pro is a simple and powerful collection of electronics tools and references. Electrodoc is the new app name of Electrodroid. Same app, with the same and even more features. The app includes: • Resistor Color Code; • Lookup Resistor color by value; • SMD Resistor Code; • Inductor Color Code; • Ohm's Law; • Reactance/Resonance; • Filters; • Voltage divider; • Resistor Ratio; • Resistor series/parallel; • Capacitor charge; • Operational Amplifier; • LED Resistor Calculator; • Adjustable voltage regulator; • NE555 Calculator; • Power dissipation; • Battery Life calculator; • Inductor Design Tool; • Voltage Drop Calculator; • PCB Trace Width Calculator; • Power Calculator; • Y-Δ Transformation; • Decibel Converter; • Frequency Converter; • Analog-Digital Converter; • RMS Converter; • Range Converter; • Port pin-out (USB port, Serial port, Parallel port, Ethernet port, Power Over Ethernet, Registered Jack, SCART connector, DVI connector, HDMI connector, Display Port, VGA connector, S-Video connector, VESA Connector, Jack connector, FireWire connector, RCA connector, Audio DIN connector, XLR and DMX, ATX Power connectors, PC peripheral connectors, EIDE/ATA - SATA, PS/2-AT connectors, 25-pair cable color code, Fiber Optic cable color, MIDI connector, MIDI/Game port, Apple 30-pin connector, Apple Lightning connector, PDMI, OBD-II Car connector, Car audio ISO connector, Trailer connectors, SD card pin-out, SIM/Smart card, Raspberry Pi pin-out, LCD pin-out, GPIB/IEEE-488 pin-out, Thermocouples colors, Arduino boards, JTAG pinouts, BeagleBone boards); • Resources (PIC ICSP / AVR ISP, ChipDB (IC pinouts), USB specifications, Resistivity Table, AWG-SWG Wire Size, Ampacity Table, Standard Resistors, Standard Capacitors, Capacitor marking codes, Circuit Schematic symbols, SMD Package Sizes, Symbols and Acronyms, SI Units prefixes, ASCII Table, Boolean Logic gates, 7400 series IC, Switch Information, 78xx IC, Batteries, Coin Batteries, Decibel Table, Radio frequencies, PT100 Conversion Table, Fuses color code, Automotive Fuses colors, DIN 47100 color coding, IP marking, World Plugs & Sockets, IEC Connectors, NEMA connectors); • Full support for EIA resistor series for all calculators; ...and more to come! If you like the program, please rate it on the app store For FAQ and full change-log, visit http://electrodoc.it

About

2017 Master Electrician Ref.

This digital handbook provides electricians and related professionals with essential electrical formulas, diagrams, and reference tables. It offers calculations, a dictionary of terms, and detailed information on wiring, motors, transformers, and more, all accessible on a mobile device.

Highlights
  • Electrical formulas and calculations
  • Wiring diagrams for various systems
  • Motor and transformer specifications
  • Conductor and ampacity tables
  • Dictionary of electrician terms
  • NEMA standards and diagrams
  • Math and conversion tools
Features
Read full description

Master Electrician Reference (or MER for short) 2017 is your electronic pocket electrician reference guide. MER is for electrical designers, engineers, installers, contractors, facility managers, inspectors, exam candidates, apprentices, electricians, journeymen, architects, and technicians. MER is for people doing residential, industrial, and commercial work. Simply, if you are a Master Sparky or work with electricity in any way, this reference guide is for you! Have you ever lost pages or had damaged pages in your pocket electricians reference? The solution is here: Use MER to keep the most important information easily accessible on your iPhone, iPod Touch, or iPad. MER will even do calculations for you; something your old pocket reference book can't do. MER is divided into the following sections: * Simple Circuits - Ohm's law, series and parallel circuits, capacitance, inductance, impedance, and reactance. * Distributed Systems - Distribution wiring diagrams for 120, 208, 277, and 480 volts, color codes, breaker sizes, light switches and bells diagrams. * Electrical Formulas - Formulas for kVA, kW, and HP. * Color Codes - Color codes for capacitors and resistors. * Motors and Wiring - Standard motor and motor starter sizes, tables of full-load currents, locked-rotor information, overload units, OCPD, nameplate information, synchronous motor speeds, three-phase STAR and DELTA diagrams, three-wire start-stop diagram, motor frame dimensions, and motor enclosure types. * Transformers - KVA ratings for single- and three-phase current, transformer formulas. * Conductor Properties - Conductor tables, AWG and metric wire sizes, twist-on pressure connectors, and wire combinations. * Ampacities - Ampacities in raceway, cable, earth, and free air, and derating tables. * Conduit Fill table * Grounding Sizes - Equipment grounding conductor (EGC) and grounding electrode conductor (GEC). * Metal Boxes - Images and sizes of metal boxes, junction / device boxes, junction / pull boxes. * Voltage Drop calculations * Dictionary of electrician terms * Insulation Charts - Table of cable and wire types * Electrical Symbols * NEMA - Plugs and wiring diagrams, enclosure types, standard underground boxes, standard fuse and breaker sizes, standard pull box / junction sizes, standard gutter and wire-ways, standard switchboards, standard busway, standard busbar ampacity, standard panelboard sizes, and standard disconnect sizes. * Math and Conversions - Formulas for algebra, geometry, fractions, temperature conversion, trig tables, unit conversions, metric prefixes, and conversions between inches and millimeters. * Conduit Bending - Includes the guide "The Master Bender Way" on how to bend conduit. See the Master Bender app or MasterBender.com website for more information. * Conduit Weights * Copper Wire Cost * Hole Saw Sizes * Material Raceway Support * Lighting - Fluorescent, high-intensity discharge, incandescent, LED, and low-pressure sodium. * Standard Tool List * Torque - Lugs, bolts, and screws, tightening torque. * Dry, Damp, and Wet Locations * Hazardous Locations * Wiring Methods * Safety - Lock-out / tag-out (LOTO), and a safety manual and first aid. Most pages contain a general scientific calculator. It is expression based: Just enter an expression and evaluate it. It understands trig and power functions, can convert between radians and degrees, and has built-in basic constants like pi and e. MER includes key NEC tables from the National Electrical Code (NEC) 2017. We also have MER apps available for NEC 2011 and NEC 2014 code years. Visit our website at MasterSparky.com for more information.

Screenshots

Electrodoc Pro4 screens
2017 Master Electrician Ref.4 screens

Verdict

The call

The clearest difference is price: Electrodoc Pro at $4.99 against 2017 Master Electrician Ref.'s $9.99. Electrodoc Pro also leads on review sentiment (75% vs 67%). 2017 Master Electrician Ref.'s advantage is ratings volume (1.3K vs 65). On rating, update cadence, 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

Electrodoc Pro costs $4.99 and 2017 Master Electrician Ref. $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Electrodoc Pro against 4.7 for 2017 Master Electrician Ref.. That said, the two scores are not equally well evidenced: 2017 Master Electrician Ref. has 1.3K ratings behind it against 65, so its average is the more settled of the two. Written reviews are what separate them: 75% of Electrodoc Pro's written reviews are positive against 67% of 2017 Master Electrician Ref.'s.

UpkeepUpdate frequency

Electrodoc Pro ships an update every 3 months, 2017 Master Electrician Ref. every 5 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Electrodoc Pro versus 2017 Master Electrician Ref.: the parameters behind the verdict, then further details
ParameterElectrodoc Pro2017 Master Electrician Ref.
Price$4.99 — better$9.99
Rating4.6 (65 ratings)4.7 (1.3K ratings) — better
Positive reviews75.4% of reviews — better66.7% of reviews
Number of ratings651.3K — better
Update frequencyEvery 3 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size25 MB46 MB
Age rating4+12+
DeveloperIODEMA SrlPawEng, LLC

Customer experience

Electrodoc Pro

All ratings62 ratings
Positive90.3%
Neutral3.2%
Negative6.5%
Written reviews114 reviews
Positive75.4%
Neutral10.5%
Negative14.0%

2017 Master Electrician Ref.

All ratings1,255 ratings
Positive92.7%
Neutral3.4%
Negative3.9%
Written reviews24 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Electrodoc Pro

Not enough reviews yet to summarise bugs or requests.

2017 Master Electrician Ref.

Reported bugs

3 issues
  • Conduit fill information missing for certain types
  • Login screen freezes
  • Compatibility issues with older devices

Requested features

3 requests
  • Update to latest NEC code
  • Add calculation tools for conduit fill and voltage drop
  • Improve user interface and navigation

In-app purchases

None

Electrodoc Pro

No in-app purchases

None

2017 Master Electrician Ref.

No in-app purchases

Questions

Is Electrodoc Pro free?
Electrodoc Pro costs $4.99, with no in-app purchases.
Is 2017 Master Electrician Ref. free?
2017 Master Electrician Ref. costs $9.99, with no in-app purchases.
Which has better reviews, Electrodoc Pro or 2017 Master Electrician Ref.?
2017 Master Electrician Ref. is rated higher. Electrodoc Pro averages 4.6 out of 5 from 65 ratings, while 2017 Master Electrician Ref. averages 4.7 from 1.3K ratings.
Do Electrodoc Pro or 2017 Master Electrician Ref. have ads?
Neither Electrodoc Pro nor 2017 Master Electrician Ref. shows ads.
Which is updated more often, Electrodoc Pro or 2017 Master Electrician Ref.?
Electrodoc Pro ships an update every 3 months, and 2017 Master Electrician Ref. every 5 months. Most recently, Electrodoc Pro was updated on October 26, 2026 and 2017 Master Electrician Ref. on October 24, 2026.

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