Ugly's Electrical References vs ATEI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ugly's Electrical References
This app provides electricians and electrical professionals with up-to-date digital information based on the National Electrical Code. It includes formulas, wiring diagrams, conduit bending guides, and calculators for various electrical calculations. The app is designed for on-the-job reference and works offline.
- NEC 2026 updates
- Mathematical formulas and calculators
- Conduit bending guide with videos
- Ampacity and conduit fill information
- Wiring diagrams
- Conversion tables
- Works offline
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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.
ATEI
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Welcome to the ATEI98 mobile application. Tailored for aspiring members and professionals alike, ATEI98 provides essential resources and tools to advance your career, enhance safety skills, and stay connected. Key Features: Safety Requirements Information Stay informed on the latest safety standards, protocols, and requirements to ensure a safe work environment. Access updated guidelines and resources anytime, anywhere. Membership Application Join our community of skilled professionals! Apply to become a member and start your journey with ATEI98. Apprenticeship Model & Documentation Learn about our comprehensive apprenticeship model, designed to guide you step-by-step. Training Videos Get access to a library of training videos tailored to your trade. Boost your skills and knowledge with resources designed for the industry. Asynchronous eLearning Remain a lifelong learner with our asynchronous eLearning modules. Complete courses at your own pace. Download ATEI98 today and take the next step in your professional journey!
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Verdict
The clearest difference is price: ATEI at Free against Ugly's Electrical References's $12.99. ATEI also leads on iOS requirement (15.5 vs 17). Ugly's Electrical References's advantage is chart position (#18 vs unranked) and update cadence (every 3 months vs every 6 months). On ads, in-app purchases 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
ATEI is free to download; Ugly's Electrical References costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ugly's Electrical References ships an update every 3 months, ATEI every 6 months. The most recent releases landed on November 1, 2026 and September 30, 2026 respectively.
| Parameter | Ugly's Electrical References | ATEI |
|---|---|---|
| Price | $12.99 | Free — better |
| Rating | 4.4 (1.5K ratings) — better | — |
| Positive reviews | 47.1% of reviews | — |
| Number of ratings | 1.5K — better | — |
| Update frequency | Every 3 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #18 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17 | 15.5 — better |
| Further details — not scored | ||
| Size | 63 MB | 71 MB |
| Age rating | 9+ | 4+ |
| Developer | Informed Publishing | Mosaic Learning, Inc. |
Bugs and requests
Ugly's Electrical References
Reported bugs
4 issues- Videos not playing
- Bookmarks not working correctly
- Navigation issues causing app crashes
- Incorrect calculation results
Requested features
5 requests- Zoom functionality
- Better search capabilities
- Spanish language support
- Offline access to full content
- Improved bookmarking system
ATEI
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ugly's Electrical References
No in-app purchases
ATEI
No in-app purchases
Questions
Is Ugly's Electrical References free?
Is ATEI free?
Do Ugly's Electrical References or ATEI have ads?
Which is updated more often, Ugly's Electrical References or ATEI?
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