Comparison

2017 Master Electrician Ref. vs MTRList

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

Head to head
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.

About

MTRList

Create and manage material order lists for your job. Easily add items, edit quantities, and rearrange your list. Send your completed order to your sales representative, shop, or boss via text or email.

Highlights
  • Add items to order list
  • Edit item quantity and unit
  • Rearrange list items
  • Send list via text or email
  • Simple and intuitive interface
Features
Read full description

MTRList (Material List) lets you add and manage a material order list for your job. Easily place items and edit their quantity and unit of measurement within your list from the same screen. Once you're done with your list and ready to order press the send button to send it to your sale rep, shop, or boss via text message or email. MTRList is intended to be as simple as possible. • Add items to the list by entering the amount/name of the item, and pressing the done button. • Quickly edit the quantity of the item by pressing on the item within the list. • Rearrange the list by pressing down on an item for a second and then drag.

Screenshots

2017 Master Electrician Ref.4 screens
MTRList4 screens

Verdict

The call

The clearest difference is price: MTRList at Free against 2017 Master Electrician Ref.'s $9.99. MTRList also leads on review sentiment (100% vs 67%) and update cadence (every 5 days vs every 5 months). 2017 Master Electrician Ref.'s advantage is in-app purchases (none vs 1) and ratings volume (1.3K vs 12). On ads 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

MTRList is free to download; 2017 Master Electrician Ref. costs $9.99 up front. MTRList sells 1 one-off in-app purchase. 2017 Master Electrician Ref. asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

2017 Master Electrician Ref. holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: 2017 Master Electrician Ref. has 1.3K ratings behind it against 12, so its average is the more settled of the two. Written reviews complicate that: 67% of 2017 Master Electrician Ref.'s written reviews are positive against 100% of MTRList's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

2017 Master Electrician Ref. ships an update every 5 months, MTRList every 5 days. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

Scorecard9 real differences · 2 level
2017 Master Electrician Ref. versus MTRList: the parameters behind the verdict, then further details
Parameter2017 Master Electrician Ref.MTRList
Price$9.99Free — better
Rating4.7 (1.3K ratings) — better4.5 (12 ratings)
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings1.3K — better12
Update frequencyEvery 5 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
Best chart rank#182 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.010.0 — better
Further details — not scored
Size46 MB22 MB
Age rating12+4+
DeveloperPawEng, LLCBret Hardman

Customer experience

2017 Master Electrician Ref.

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

MTRList

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and 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

MTRList

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

2017 Master Electrician Ref.

No in-app purchases

1 purchases

MTRList

One-time1
  • Premium$1.99

Questions

Is 2017 Master Electrician Ref. free?
2017 Master Electrician Ref. costs $9.99, with no in-app purchases.
Is MTRList free?
MTRList is free to download, with in-app purchases available.
Which has better reviews, 2017 Master Electrician Ref. or MTRList?
2017 Master Electrician Ref. is rated higher. 2017 Master Electrician Ref. averages 4.7 out of 5 from 1.3K ratings, while MTRList averages 4.5 from 12 ratings.
Do 2017 Master Electrician Ref. or MTRList have ads?
Neither 2017 Master Electrician Ref. nor MTRList shows ads.
Which is updated more often, 2017 Master Electrician Ref. or MTRList?
2017 Master Electrician Ref. ships an update every 5 months, and MTRList every 5 days. Most recently, 2017 Master Electrician Ref. was updated on October 14, 2026 and MTRList on October 10, 2026.

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