Panel Legend 2 vs Kopperfield
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
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.
- Load calculator with NEC standards
- Single line diagram tool
- Panel schedule creation
- NEC chatbot
- Instant PDF report generation
- AI panel photo processing
- Team dashboard
Read full descriptionHide 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
Verdict
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
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.
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.
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.
| Parameter | Panel Legend 2 | Kopperfield |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 2.3 (3 ratings) | 3.9 (9 ratings) — better |
| Positive reviews | 14.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 | 9 — better |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 19 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | Kopperfield, Inc. |
Customer experience
Panel Legend 2
Kopperfield
In-app purchases
Panel Legend 2
No in-app purchases
Kopperfield
No in-app purchases
Questions
Is Panel Legend 2 free?
Is Kopperfield free?
Which has better reviews, Panel Legend 2 or Kopperfield?
Do Panel Legend 2 or Kopperfield have ads?
Which is updated more often, Panel Legend 2 or Kopperfield?
Other comparisons















