Comparison

Ferret Tools vs Kopperfield

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

Head to head
About

Ferret Tools

View and record live video from your inspection camera. This app allows you to capture photos and videos of hard-to-reach areas. Requires a separate Ferret inspection camera to function.

Highlights
  • Live video streaming
  • Photo capture
  • Video recording
  • Inspection camera control
Read full description

A Ferret inspection camera is required to use this App – sold separately. Need help? Please visit ferrettools.com/support

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

Ferret Tools4 screens
Kopperfield4 screens

Verdict

The call

The clearest difference is rating: Kopperfield at 3.9 against Ferret Tools's 3.0. Ferret Tools's advantage is review sentiment (27% vs 0%) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and ads 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

Both are free to download. 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 3.0. Both are backed by a comparable volume of ratings — 22 and 9 respectively. Written reviews complicate that: 27% of Ferret Tools'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

Ferret Tools ships an update every 6 weeks, Kopperfield every 3 weeks. The most recent releases landed on June 10, 2026 and August 21, 2026 respectively.

Scorecard4 real differences · 6 level
Ferret Tools versus Kopperfield: the parameters behind the verdict, then further details
ParameterFerret ToolsKopperfield
PriceFreeFree
Rating3.0 (22 ratings)3.9 (9 ratings) — better
Positive reviews26.9% of reviews — better0.0% of reviews
Number of ratings22 — better9
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.1
Further details — not scored
Size31 MB45 MB
Age rating4+4+
DeveloperThe Cable Ferret Company LimitedKopperfield, Inc.

Customer experience

Ferret Tools

All ratings20 ratings
Positive45.0%
Neutral10.0%
Negative45.0%
Written reviews26 reviews
Positive26.9%
Neutral3.8%
Negative69.2%

Kopperfield

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

In-app purchases

None

Ferret Tools

No in-app purchases

None

Kopperfield

No in-app purchases

Questions

Is Ferret Tools free?
Ferret Tools is free to download, with no in-app purchases.
Is Kopperfield free?
Kopperfield is free to download, with no in-app purchases.
Which has better reviews, Ferret Tools or Kopperfield?
Kopperfield is rated higher. Ferret Tools averages 3.0 out of 5 from 22 ratings, while Kopperfield averages 3.9 from 9 ratings.
Do Ferret Tools or Kopperfield have ads?
Neither Ferret Tools nor Kopperfield shows ads.
Which is updated more often, Ferret Tools or Kopperfield?
Ferret Tools ships an update every 6 weeks, and Kopperfield every 3 weeks. Most recently, Ferret Tools was updated on June 10, 2026 and Kopperfield on August 21, 2026.

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