As of 10 Nov 2026, Lineman's Reference - URD is #30 in Paid · Education in the United States, the one tracked chart it's in. Over the last 7 days its biggest climb was 51 places, to #30 in Paid · Education in the United States. Appulse Index first saw Lineman's Reference - URD in a tracked chart on 8 Oct 2026. Since then it has charted on 18 days in 1 country, with a best rank of #30 in Paid · Education in the United States on 10 Nov 2026.
Current rank
#30United States · Paid · Education
- Was
- #817 days ago
- Change
- Up 51 placesover 7 days
- Best
- #30in 7 days
- Longest chart run
- 18 daysUnited States · Paid · Education
- New ratings, 7 days
- +1United States · since 3 Nov 2026
Chart record
Every tracked chart, country and day since Appulse Index first saw this app in a chart.
What's new
Version 1.5.0 · 2 months ago
Bug fixes. • Random Loop Phasing: closing the N.O. on a loop that is IN phase no longer blows your cutouts. Out of phase still does — check your phasing before you close. • Sound, Vibrate, Fault Indicator and Random Loop Phasing settings stick between sessions. • Memory no longer piles up as you move between labs.
Ranking events
- Entered the Paid · Education chart at #37United States
- Entered the Paid · Education chart at #58United States
- Climbed #80 → #40 in Paid · EducationUnited States
- Dropped #39 → #99 in Paid · EducationUnited States
- Climbed #89 → #39 in Paid · EducationUnited States
- Entered the Paid · Education chart at #89United States
Show 6 earlier events
- Entered the Paid · Education chart at #74United States
- Dropped #44 → #81 in Paid · EducationUnited States
- Entered the Paid · Education chart at #83United States
- Dropped #51 → #88 in Paid · EducationUnited States
- Climbed #66 → #37 in Paid · EducationUnited States
- Entered the Paid · Education chart at #77United States
About
Lineman's Reference - URD is the latest app from Digital Apprentice that will teach linemen and apprentices the basics of underground distribution systems. Learn how to: - Isolate bad cable sections - Hipot cable sections - Isolate and change bad pad-mounted transformers - Troubleshoot underground outages - Switch Underground Distribution Loops Primary Training Labs: - Fault Indicators - Cable Isolation - Hipotting - Transformer Isolation Troubleshooting Labs (with optional quizzes)…
Ranks come from Apple's public App Store charts, checked once a day. Appulse Index isn't affiliated with Apple.
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
United States · Paid · Education: best #30, latest #30, over 7 snapshots since 4 Nov.
In 1 chart now
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| United States· Paid · Education · best #30 · 18 days · 7 days Up 51 places | #30 | Up 7 places | Up 51 places | #30 | 18 |
Competitors
Compare with the top 3Full chartTop of Paid · Education in United States. Lineman's Reference - URD is #30 there. Changes are over 7 days.
- #1 (number one)No change
AnkiMobile FlashcardsAnki Software, LLC - #2Up 1 place
SkyView®Terminal Eleven LLC - #3Down 1 place
HamStudy.orgSignal Stuff - #4No change
- #5Up 1 place
Teach Your Monster to ReadTeach Your Monster - #6Down 1 place
Stack the States®Freecloud Design, Inc. - #7Up 3 places
Wagotabi: Learn JapaneseWAGOTABI LIMITED - #8Up 28 places
Stack the Countries®Freecloud Design, Inc. - #9Down 1 place
608 PracticeAfter Hours Data Systems LLC - #10Up 8 places
ABA WizardTYSM Technologies, LLC - #11Up 3 places
PDG PROmote 2026+ForceReadiness.com - #12Up 7 places
- #13Up 59 places
TX Real Estate Exam FlashcardsChampions School of Real Estate - #14Up 23 places
Lineman's Reference - XFMR LABDigital Apprentice LLC - #15Up 38 places
Spelling ShedEducation Shed Ltd - #16Up 1 place
Private Pilot Test PrepSporty's Pilot Shop - #17Up 4 places
- #18Down 7 places
PROmote - Army Study GuideForceReadiness.com - #19Up 4 places
TLC Practice exam 2.0Los Gatos Taxi Innovators - #20Up 14 places
Elmo CallsSesame Workshop (Apps)
Screenshots
More from Digital Apprentice LLC
| App | Best rank now | Released | App Store |
|---|---|---|---|
Lineman's Reference - XFMR LABEducation · | Paid · EducationUnited States#14 |
As of 10 Nov 2026, Lineman's Reference - URD is #30 in Paid · Education in the United States, the one tracked chart it's in. Over the last 7 days its biggest climb was 51 places, to #30 in Paid · Education in the United States. Appulse Index first saw Lineman's Reference - URD in a tracked chart on 8 Oct 2026. Since then it has charted on 18 days in 1 country, with a best rank of #30 in Paid · Education in the United States on 10 Nov 2026.
Store listing
How the app presents itself on the App Store. Select a screenshot to open it full size.
App facts
What Apple publishes about this app. Ratings are from one country's App Store.
- Price
- $9.99
- Rating
- 4.5 / 5 stars68 ratings United States
- Released
- 25 Nov 2024
- Last update
- Version 1.5.0
- Requires
- iOS 12.1or later
- Size
- 202.3 MB
- Languages
- 1
Chart record
Every tracked chart, country and day since Appulse Index first saw this app in a chart.
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
United States · Paid · Education: best #30, latest #30, over 7 snapshots since 4 Nov.
Current rankings
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| United States· Paid · Education · best #30 · 18 days · 7 days Up 51 places | #30 | Up 7 places | Up 51 places | #30 | 18 |
Ranking events
Entries, big moves, #1s and new versions we've recorded, by day.
- Entered the Paid · Education chart at #37United States
- Entered the Paid · Education chart at #58United States
- Climbed #80 → #40 in Paid · EducationUnited States
- Dropped #39 → #99 in Paid · EducationUnited States
- Climbed #89 → #39 in Paid · EducationUnited States
- Entered the Paid · Education chart at #89United States
- Entered the Paid · Education chart at #74United States
- Dropped #44 → #81 in Paid · EducationUnited States
- Entered the Paid · Education chart at #83United States
- Dropped #51 → #88 in Paid · EducationUnited States
- Climbed #66 → #37 in Paid · EducationUnited States
- Entered the Paid · Education chart at #77United States
Competitors
Compare with the top 3Full chartTop of Paid · Education in United States. Lineman's Reference - URD is #30 there. Changes are over 7 days.
- #1 (number one)No changeAnkiMobile FlashcardsAnki Software, LLC
- #2Up 1 placeSkyView®Terminal Eleven LLC
- #3Down 1 placeHamStudy.orgSignal Stuff
- #4No change
- #5Up 1 placeTeach Your Monster to ReadTeach Your Monster
- #6Down 1 placeStack the States®Freecloud Design, Inc.
- #7Up 3 placesWagotabi: Learn JapaneseWAGOTABI LIMITED
- #8Up 28 placesStack the Countries®Freecloud Design, Inc.
- #9Down 1 place608 PracticeAfter Hours Data Systems LLC
- #10Up 8 placesABA WizardTYSM Technologies, LLC
- #11Up 3 placesPDG PROmote 2026+ForceReadiness.com
- #12Up 7 places
- #13Up 59 placesTX Real Estate Exam FlashcardsChampions School of Real Estate
- #14Up 23 placesLineman's Reference - XFMR LABDigital Apprentice LLC
- #15Up 38 placesSpelling ShedEducation Shed Ltd
- #16Up 1 placePrivate Pilot Test PrepSporty's Pilot Shop
- #17Up 4 places
- #18Down 7 placesPROmote - Army Study GuideForceReadiness.com
- #19Up 4 placesTLC Practice exam 2.0Los Gatos Taxi Innovators
- #20Up 14 placesElmo CallsSesame Workshop (Apps)
- #30Up 51 places
Lineman's Reference - URDThis app
About
From the app's App Store listing.
Lineman's Reference - URD is the latest app from Digital Apprentice that will teach linemen and apprentices the basics of underground distribution systems.
Learn how to:
- Isolate bad cable sections
- Hipot cable sections
- Isolate and change bad pad-mounted transformers
- Troubleshoot underground outages
- Switch Underground Distribution Loops
Primary Training Labs:
- Fault Indicators
- Cable Isolation
- Hipotting
- Transformer Isolation
Troubleshooting Labs (with optional quizzes)…
What's new
Version 1.5.0 · 7 Sep 2026 ·
Bug fixes.
- Random Loop Phasing: closing the N.O. on a loop that is IN phase no longer blows your cutouts. Out of phase still does — check your phasing before you close.
- Sound, Vibrate, Fault Indicator and Random Loop Phasing settings stick between sessions.
- Memory no longer piles up as you move between labs.
More from Digital Apprentice LLC
Their other apps that Appulse has seen in the charts, charting ones first.
| App | Best rank now | Released | App Store |
|---|---|---|---|
Lineman's Reference - XFMR LABEducation · | Paid · EducationUnited States#14 |
Ranks come from Apple's public App Store charts, checked once a day. Appulse Index isn't affiliated with Apple.