Lineman's Reference - XFMR Lab

Installs

4.7k

Rating

4.5

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
7/30/2025	37	4.529	4,721	1.3.00
7/29/2025	37	4.529	4,720	1.3.00
7/28/2025	37	4.529	4,719	1.3.00
7/27/2025	37	4.529	4,716	1.3.00
7/26/2025	37	4.529	4,710	1.3.00
7/25/2025	37	4.529	4,708	1.3.00
7/24/2025	37	4.529	4,705	1.3.00
7/23/2025	37	4.529	4,704	1.3.00
7/22/2025	37	4.529	4,703	1.3.00
7/21/2025	0	0.000	4,701	1.3.00
7/20/2025	0	0.000	4,696	1.3.00
7/19/2025	0	0.000	4,695	1.3.00
7/18/2025	0	0.000	4,690	1.3.00
7/17/2025	0	0.000	4,690	1.3.00
7/16/2025	0	0.000	4,684	1.3.00
7/15/2025	0	0.000	4,672	1.3.00
7/14/2025	0	0.000	4,670	1.3.00
7/13/2025	0	0.000	4,667	1.3.00
7/12/2025	0	0.000	4,665	1.3.00
7/11/2025	0	0.000	4,662	1.3.00
7/10/2025	0	0.000	4,661	1.3.00
7/9/2025	36	4.545	4,659	1.3.00
7/8/2025	36	4.545	4,657	1.3.00
7/7/2025	36	4.545	4,656	1.3.00
7/6/2025	36	4.545	4,654	1.3.00
7/5/2025	36	4.545	4,654	1.3.00
7/4/2025	36	4.545	4,651	1.3.00
7/3/2025	35	4.563	4,647	1.3.00
7/2/2025	36	4.515	4,645	1.3.00
7/1/2025	36	4.515	4,641	1.3.00
6/30/2025	35	4.563	4,640	1.3.00
6/29/2025	0	0.000	4,640	1.3.00
6/28/2025	0	0.000	4,635	1.3.00
6/27/2025	0	0.000	4,632	1.3.00
6/26/2025	0	0.000	4,628	1.3.00
6/25/2025	0	0.000	4,622	1.3.00
6/24/2025	0	0.000	4,622	1.3.00
6/23/2025	0	0.000	4,621	1.3.00
6/22/2025	0	0.000	4,619	1.3.00
6/21/2025	0	0.000	4,614	1.3.00
6/20/2025	0	0.000	4,608	1.3.00
6/19/2025	0	0.000	4,606	1.3.00
6/18/2025	0	0.000	4,605	1.3.00
6/17/2025	0	0.000	4,604	1.3.00
6/16/2025	0	0.000	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.

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