Ugly's Electrical References
by Informed Publishing
- Productivity
- Paid
- Rating
- 4.4
- 1.5K ratings · US storefront
- Top 82%among 99 Productivity apps
- Last update
- Jun 19, 2026
- Version 1.9.0
- Size
- 67 MB
- Category
- Productivity
- Tracked since
- Oct 10, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
The Ugly's Electrical References App has been updated to reflect changes to the 2026 National Electrical Code (NEC) and the 2026 Edition of our popular Ugly’s Electrical References book. The Ugly’s App offers the most pertinent, up-to-date digital information for electricians, including table change information, mathematical formulas; National Electrical Manufacturers Association (NEMA) wiring configurations; a conduit bending guide with videos, ampacity and conduit fill information, transformer and control circuit wiring diagrams, and conversion tables.
The 2026 Edition:
- Reflects changes to the 2026 NEC
- Features expanded coverage of the following topics:
- Full-load currents for 3-phase transformers
- Maximum number of conductors in electrical metallic tubing for trade sizes 5 and 6
- Equipment grounding conductors
- General lighting loads for non-dwelling occupancies
- Overview of important NEC code changes from 2020, 2023 and 2026
Electricians and electrical professionals have used ‘Ugly’s Electrical References’ book as their on-the-job reference for over 35 years. This app will serve you even better in the field today.
FEATURING
Calculators and Interactive Features
- Ohm’s Law Calculator
- Voltage Drop Calculator
- Ampacity Calculator
- To Find: Amps, Watts, Horsepower, KVA
- To Find: Inductance, Impedance, Reactance
- Three-phase AC Motor Data: Starter, Breaker, Heater, Wire, and Conduit Size
- Power Factor Correction
- Full Load Current for Motors and Transformers
- Locked-Rotor Current Calculator
- Offset Bending Calculator
- Conduit Fill Calculator
- Conversions for Area, Length, Temperature, Time, Volume, and Weight
- NEMA Wiring Configurations
*Pinch & Zoom for improved readability
*Conduit Bending Video Tutorials
*Search function helps you quickly find what you need to know
*NEC Updater outlines and explains changes to the National Electrical Code©
*Electrical Safety including definitions, boundaries, procedures, PPE guidance, and life-saving *First aid procedures
*Blueprint symbol identifier
*Bookmark your commonly used screens
*High-definition images and interactive tables that can be zoomed in for detail
*Works offline
*Great for electricians, students, engineers, contractors, maintenance workers, and military
Interested in a buying more than one copy of the Ugly’s Electrical Reference app for your commercially owned devices? Please email info[at]uglys[dot]net for details on volume purchases.
Privacy Policy - http://www.jblearning.com/privacy/
Terms of Service - http://www.jblearning.com/use/
Support – http://www.uglys.net/appsupport
The Ugly’s Electrical Reference app is part of the popular Ugly’s Professional Reference® series, which is an imprint of Jones & Bartlett Learning. National Electrical Code and NFPA 70 are registered trademarks of the National Fire Protection Agency and are not associated with Ugly’s Electrical References in any way.
What’s new
Release notes for the latest version, as written by the developer.
- Added support for Apple Age signal to ensure age compliance
- Improvements And Bug fixing.
Rank history
Daily position in the British Virgin Islands charts. #1 is at the top.
- Best rank
- #2
- Current rank
- #2
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
70/100
Not flagged as small & simple
- Developer size10% · 25
Developer: 4 apps on the charts
- Audience size80% · 20
Ratings: 1,508
- App size60% · 10
Size: 67 MB
- Price model100% · 15
Price model: paid
- Demand proof100% · 30
Best rank #2, 22 countries
An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2
How the score worksVersion history
- 1.9.0LatestReleased Jun 19, 2026