Lineman's Reference - XFMR Lab

Installs

4.6k

Rating

4.6

Rating count

< 100

Category	Education
Developer	Digital Apprentice LLC
Price	9.99
First release	8/26/2021 (4 years ago)
Version	1.3.00
In-app purchases	No
Contains ads	No
Content rating	Everyone
Package name	digitalapprentice.xfmr

View on Play Store

Core Metrics

Data Breakdown

Date	Rating Count	Average Rating	Installs	Version
6/16/2025	35	4.563	4,602	1.3.00
6/15/2025	35	4.563	4,602	1.3.00
6/14/2025	35	4.563	4,599	1.3.00
6/13/2025	0	0.000	4,598	1.3.00
6/12/2025	35	4.563	4,597	1.3.00
6/9/2025	35	4.563	4,597	1.3.00
6/8/2025	0	0.000	4,593	1.3.00
5/29/2025	0	0.000	4,589	N/A
5/28/2025	0	0.000	4,567	N/A
5/27/2025	35	4.563	4,562	N/A
5/24/2025	0	0.000	4,559	N/A
5/22/2025	0	0.000	4,555	N/A
5/21/2025	0	0.000	4,545	N/A
5/20/2025	0	0.000	4,544	N/A
5/19/2025	0	0.000	4,544	N/A
4/28/2025	34	4.548	4,478	N/A
4/24/2025	0	0.000	4,474	N/A
4/23/2025	34	4.548	4,464	N/A
4/22/2025	34	4.548	4,452	N/A
4/15/2025	0	0.000	4,452	N/A
4/10/2025	0	0.000	4,441	N/A
4/6/2025	0	0.000	4,425	N/A
4/5/2025	34	4.548	4,416	N/A
3/10/2025	34	4.548	4,410	N/A
2/27/2025	34	4.548	4,299	N/A
2/25/2025	34	4.548	4,275	N/A
2/24/2025	34	4.548	4,274	N/A
2/20/2025	34	4.548	4,271	N/A
2/17/2025	35	4.563	4,244	N/A

Details

This isn't just an app with diagrams and information to read, this is a fully interactive transformer lab that can fit in your pocket. Whether you are brand new to the trade, just learning about Transformers, or a seasoned Lineman, this app can help you learn more about transformers. From transformer banks, to basic transformer troubleshooting and even basic transformer paralleling, you can learn a ton with this app. 
In this app there is a functioning volt meter, ohm meter, and even rotation meter.
On the slide-out menu you can see your voltages as you make changes to the banks in live-time.
Pop the lid to transformers and view the secondary windings and blowing fuses under certain conditions are just a few of the many amazing features!
Build a custom quiz for you and your apprentices!

Current Labs in this app:
-Single Phase-
Single Bushing Topside
Dual Bushing Topside

-Three Phase-
Delta Delta Closed
Delta Wye Closed
Wye Delta Closed
Wye Wye Closed
Delta Delta Open
Wye Delta Open

-Misc-
Paralleling
4th Cutout
Troubleshooting
Tutorial

-Advanced-
Straight 480
240/480
277/480
Corner Grounded 240 or 480
Wye Wye 5 Wire (120/240 & 120/208)

-Quiz-
Test your transformer wiring knowledge by completing a predetermined assortment of labs at random. Blowing fuses and attempting to Check Work subtract from your overall score out of 100.

-Advanced Quiz-
Test your overall transformer knowledge by completing a series of random quizzes where you receive basic job-site information and have to choose the correct transformer nameplate and secondary coil configuration. You will then have the option to wire up the corresponding bank.

More Apps byDigital Apprentice LLC

Lineman's Reference - URD

Installs: 208Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 11/24/2024Last change: N/A

More Apps inEducation

A2-Deutsch

Installs: 321,094Score: 4.18Ratings: 616

Price: N/A

Version: N/AReleased: 4/8/2020Last change: N/A

Finca | آموزش برنامه نویسی

Installs: 484,858Score: 4.51Ratings: 3,517

Price: N/A

Version: N/AReleased: 7/10/2023Last change: N/A

Mirinda Pro

Installs: 101,748Score: 4.57Ratings: 603

Price: N/A

Version: N/AReleased: 2/25/2025Last change: N/A

Baby Games World: Play & Learn

Installs: 28,316,363Score: 4.45Ratings: 29,359

Price: N/A

Version: N/AReleased: 3/20/2019Last change: N/A

Schlaukopf

Installs: 1,455,725Score: 3.87Ratings: 7,276

Price: N/A

Version: N/AReleased: 8/29/2014Last change: N/A

Math Tests: learn mathematics

Installs: 6,364,209Score: 4.43Ratings: 29,073

Price: N/A

Version: N/AReleased: 10/25/2016Last change: N/A

WordBit Немецкий язык

Installs: 1,009,155Score: 4.01Ratings: 4,024

Price: N/A

Version: N/AReleased: 10/5/2018Last change: N/A

Ethio Apps

Installs: 10,902Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 6/7/2025Last change: N/A

Fahrschule TheorieFit 2025

Installs: 396,443Score: 4.64Ratings: 908

Price: N/A

Version: N/AReleased: 3/2/2017Last change: N/A

Famly

Installs: 700,259Score: 3.55Ratings: 1,254

Price: N/A

Version: N/AReleased: 6/3/2014Last change: N/A

Learn Language with Flashcards

Installs: 1,407,444Score: 4.74Ratings: 34,324

Price: N/A

Version: N/AReleased: 9/28/2016Last change: N/A

Learn German - Beginners

Installs: 1,288,456Score: 4.72Ratings: 12,816

Price: N/A

Version: N/AReleased: 9/16/2020Last change: N/A

Learn Italian for beginners

Installs: 2,877,407Score: 4.69Ratings: 32,213

Price: N/A

Version: N/AReleased: 11/5/2014Last change: N/A

German For Kids

Installs: 376,980Score: 4.79Ratings: 9,267

Price: N/A

Version: N/AReleased: 2/8/2021Last change: N/A

Führerschein 2024 LITE

Installs: 286,646Score: 4.59Ratings: 1,223

Price: N/A

Version: N/AReleased: 4/26/2018Last change: N/A

Zaker - ذاكر

Installs: 21,911Score: 4.38Ratings: 107

Price: N/A

Version: N/AReleased: 10/16/2024Last change: N/A

Question.AI - Mathe-Löser

Installs: 24,319,846Score: 3.99Ratings: 222,553

Price: N/A

Version: N/AReleased: 7/12/2023Last change: N/A

Domi Kids-Baby Songs & Videos

Installs: 11,258,016Score: 4.26Ratings: 204,808

Price: N/A

Version: N/AReleased: 5/12/2023Last change: N/A

لرنیت | آموزش زبان انگلیسی

Installs: 5,190,171Score: 4.72Ratings: 206,624

Price: N/A

Version: N/AReleased: 4/25/2018Last change: N/A

Solar System Scope

Installs: 20,358,302Score: 4.29Ratings: 146,778

Price: N/A

Version: N/AReleased: 12/17/2013Last change: N/A

Brilliant: Learn by doing

Installs: 5,734,320Score: 4.63Ratings: 94,195

Price: N/A

Version: N/AReleased: 3/21/2014Last change: N/A

Fela - AI Language Learning

Installs: 29,621Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 10/30/2023Last change: N/A

IEEE

Installs: 5,692,134Score: 3.88Ratings: 4,039

Price: N/A

Version: N/AReleased: 11/13/2017Last change: N/A

schul.cloud

Installs: 942,433Score: 4.39Ratings: 12,307

Price: N/A

Version: N/AReleased: 2/12/2018Last change: N/A

BeeSpeaker Learn English

Installs: 2,368,256Score: 4.63Ratings: 36,774

Price: N/A

Version: N/AReleased: 1/19/2022Last change: N/A

Padlet

Installs: 10,468,091Score: 4.67Ratings: 30,090

Price: N/A

Version: N/AReleased: 3/28/2016Last change: N/A

Bug Identifier Bug Finder

Installs: 390,480Score: 4.07Ratings: 5,312

Price: N/A

Version: N/AReleased: 10/14/2021Last change: N/A

sofatutor KIDS

Installs: 34,309Score: 3.89Ratings: 106

Price: N/A

Version: N/AReleased: 11/24/2023Last change: N/A

Piano: Learn & Play Piano

Installs: 5,754,369Score: 3.93Ratings: 12,959

Price: N/A

Version: N/AReleased: 12/29/2024Last change: N/A

TalkIn-Learn Language&Culture

Installs: 2,620,301Score: 3.32Ratings: 3,610

Price: N/A

Version: N/AReleased: 1/28/2024Last change: N/A

Wlingua - Learn English

Installs: 18,127,706Score: 4.75Ratings: 435,540

Price: N/A

Version: N/AReleased: 3/29/2012Last change: N/A

Plantis - Gardening Assistant

Installs: 402,867Score: 4.23Ratings: 3,352

Price: N/A

Version: N/AReleased: 4/17/2020Last change: N/A

LearnAI: Speak & Learn English

Installs: 505,064Score: 0.00Ratings: 0

Price: N/A

Version: N/AReleased: 5/4/2025Last change: N/A

NamazStart

Installs: 254,801Score: 5.00Ratings: 332

Price: N/A

Version: N/AReleased: 3/15/2023Last change: N/A

Timbro Guitar - Learn Guitar

Installs: 2,551,101Score: 4.80Ratings: 48,014

Price: N/A

Version: N/AReleased: 5/26/2019Last change: N/A

Learn Russian - Beginners

Installs: 1,442,833Score: 4.65Ratings: 11,880

Price: N/A

Version: N/AReleased: 10/29/2020Last change: N/A

Go back to the Home page