Comparison

Panel Legend 2 vs Kopperfield

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Panel Legend 2

Easily create professional panel legends for any project size. This universal app supports multiple devices and offers features like iCloud sync, PDF export, and color-coded circuit numbers. It also includes helpful construction calculators.

Highlights
  • Create legends of any size
  • iCloud support for cross-device sync
  • Export legends as PDF
  • Color-coded circuit numbers
  • Construction style calculator included
  • Supports inches or centimeters
Features
Read full description

Panel Legend 2 is a fast, easy way to create panel legends for any size of job. Put your pencil down and start making professional legends today. - Universal app allows use on both iPad, Mac, and iPhone/iPod with single purchase. - iCloud support saves your data across multiple devices. - Create legends of any size with any number of circuits. - Print your legends right from the app. - Panel legends save based on job/project to easily locate them later. - Export your legends as pdf. - Include colour coded circuit numbers to easily keep track of phases. - Gang circuit description for multipole breakers. - Enter panel legend size in inches or centimeters. - Support for AB slim line panels. - App includes a full featured construction style calculator, torque calculator and conversion app.

About

Kopperfield

Streamline electrical design and permitting with powerful tools for load calculations, panel schedules, and single-line diagrams. Quickly reference the National Electrical Code with an AI-powered chatbot and generate instant PDF reports for inspectors and clients.

Highlights
  • Load calculator with NEC standards
  • Single line diagram tool
  • Panel schedule creation
  • NEC chatbot
  • Instant PDF report generation
  • AI panel photo processing
  • Team dashboard
Features
Read full description

Save time and money. Get ready for permits and projects with faster and easier design tools from Kopperfield, including load calcs, line diagrams, panel schedules, and more. Once logged into your Kopperfield account, you'll enjoy our: * Load calculator: Easy-to-use interface pre-loaded with common appliances and their standard output values from the National Electrical Code. Add information on the property and your calculation will automatically update. Supports both commercial and residential calculations, as well as the Standard (NEC Article 220 Part III), Optional (NEC Article 220 Part IV), and 2026 Standard (NEC Article 120 Part III) methods. * Single line diagram tool: Contains dozens of common templates and electrical symbols to make it easy to generate new diagrams and share them with your team. View diagrams from any device and create new templates on tablet or desktop for your whole team to use. * Panel schedules: Includes tools to complete panel schedules and create labels for electrical panels. Drag-and-drop interface makes it easy to arrange and customize circuits for both split-phase and three-phase projects. * NEC chatbot: Custom chatbot with advanced search capabilities to quickly reference specific sections of the 2017, 2020, or 2023 National Electrical Code. Includes the following features: * Fast PDF outputs: instantly generate a downloadable, one-page PDF report of your load calc, line diagram, or panel schedule to share with inspectors and customers * Smart property data: enter the property address and we’ll pull in the square footage for any customer project or electrical load calculation * AI panel photo processing: upload a photo of an electrical panel to automatically add items to your load calculation or panel schedule * Team dashboard: store your team's projects and documents in one place for easier management, access, and review *Single and three phase options: use a variety of nominal voltages for residential and commercial building types, including: 120/240V, 120/208V, 120/240V, 208Y/120V 3Ø, 240V 3Ø Delta, 240V 3Ø Hi-leg Delta, 347V 3Ø Delta, 480Y/277V 3Ø, 480V 3Ø Delta, 600Y/347Y 3Ø, 600V 3Ø Delta. * Standard scenarios: generate load calcs for scenarios including single family homes (standard and optional methods), multi dwelling units (i.e., duplex, triplex, quad), 120/208v (three-phase power) dwellings, accessory dwelling units and additions, commercial occupancy types, and heat pumps * Common appliance defaults: choose from a pre-loaded list of common appliances and standard output values that you can adjust for every load calculation * EV charger inputs: include EV charger values to any load calculation, essential for modern homes

Screenshots

Panel Legend 24 screens
Kopperfield4 screens

Verdict

The call

The clearest difference is price: Kopperfield at Free against Panel Legend 2's $6.99. Kopperfield also leads on rating (3.9 vs 2.3) and update cadence (every 3 weeks vs every 3 months). Panel Legend 2's advantage is review sentiment (14% vs 0%). 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

CostPrice · In-app purchases · Ads · Monetization

Kopperfield is free to download; Panel Legend 2 costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Kopperfield holds the better App Store score, 3.9 against 2.3. Both are backed by a comparable volume of ratings — 3 and 9 respectively. Written reviews complicate that: 14% of Panel Legend 2's written reviews are positive against 0% of Kopperfield's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Panel Legend 2 ships an update every 3 months, Kopperfield every 3 weeks. The most recent releases landed on August 4, 2026 and August 21, 2026 respectively.

Scorecard7 real differences · 3 level
Panel Legend 2 versus Kopperfield: the parameters behind the verdict, then further details
ParameterPanel Legend 2Kopperfield
Price$6.99Free — better
Rating2.3 (3 ratings)3.9 (9 ratings) — better
Positive reviews14.3% of reviews — better0.0% of reviews
Number of ratings39 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.1 — better
Further details — not scored
Size19 MB45 MB
Age rating4+4+
DeveloperSnappy Appz Inc.Kopperfield, Inc.

Customer experience

Panel Legend 2

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews7 reviews
Positive14.3%
Neutral0.0%
Negative85.7%

Kopperfield

All ratings9 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Panel Legend 2

No in-app purchases

None

Kopperfield

No in-app purchases

Questions

Is Panel Legend 2 free?
Panel Legend 2 costs $6.99, with no in-app purchases.
Is Kopperfield free?
Kopperfield is free to download, with no in-app purchases.
Which has better reviews, Panel Legend 2 or Kopperfield?
Kopperfield is rated higher. Panel Legend 2 averages 2.3 out of 5 from 3 ratings, while Kopperfield averages 3.9 from 9 ratings.
Do Panel Legend 2 or Kopperfield have ads?
Neither Panel Legend 2 nor Kopperfield shows ads.
Which is updated more often, Panel Legend 2 or Kopperfield?
Panel Legend 2 ships an update every 3 months, and Kopperfield every 3 weeks. Most recently, Panel Legend 2 was updated on August 4, 2026 and Kopperfield on August 21, 2026.

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