Comparison

Ferret Tools vs Mike Holt's Electrical Toolbox

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

Head to head

Ferret Tools

Ferret camera viewing App

Free

🔧 Utilities

★ 3.123 ratingsView app →

Mike Holt's Electrical Toolbox

Electrical Power Calculator

Free

🔧 Utilities

★ 4.6197 ratingsView app →

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

Features

Read full description

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

About

Mike Holt's Electrical Toolbox

This app provides essential calculations for electricians, inspectors, contractors, and engineers. It helps determine conductor sizing, circuit protection, race sizing, and grounding conductor sizes for various electrical equipment and services.

Highlights

Conductor sizing
Voltage drop limitations
Circuit protection sizing
Race sizing
Equipment grounding conductor sizing
Dwelling-unit service calculations

Features

Read full description

Mike Holt, the industry leader in the electrical industry (MikeHolt.com) has created an amazing, practical and useful app for the electrician, inspector, instructor, contractor and engineer. The app contains conductor sizing (including voltage drop limitations), circuit protection sizing, race sizing, equipment grounding conductor sizing for electric heating equipment (commercial and Residential), air-conditioning equipment (commercial and Residential), motors (commercial and Residential), Transformers (commercial) , and dwelling-unit service calculations and sizing.

Screenshots

Ferret Tools4 screens

Mike Holt's Electrical Toolbox4 screens

Verdict

The call

The clearest difference is review sentiment: Mike Holt's Electrical Toolbox at 77% against Ferret Tools's 27%. Mike Holt's Electrical Toolbox also leads on rating (4.6 vs 3.1) and ratings volume (197 vs 23). Ferret Tools's advantage is update cadence (every 6 weeks vs every 3 months). On price, ads, in-app purchases and monetization model 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

Mike Holt's Electrical Toolbox holds the better App Store score, 4.6 against 3.1. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 197 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 27% of Ferret Tools's written reviews are positive against 77% of Mike Holt's Electrical Toolbox's.

UpkeepUpdate frequency

Ferret Tools ships an update every 6 weeks, Mike Holt's Electrical Toolbox every 3 months. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 6 level

Ferret Tools versus Mike Holt's Electrical Toolbox: the parameters behind the verdict, then further details
Parameter	Ferret Tools	Mike Holt's Electrical Toolbox
Price	Free	Free
Rating	3.1 (23 ratings)	4.6 (197 ratings) — better
Positive reviews	26.9% of reviews	76.7% of reviews — better
Number of ratings	23	197 — better
Update frequency	Every 6 weeks — better	Every 3 months
Ads	No	No
In-app purchases	No	No
Monetization	Free	Free
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	15	14.0 — better
Further details — not scored
Size	31 MB	26 MB
Age rating	4+	4+
Developer	The Cable Ferret Company Limited	Mike Holt Enterprises

Customer experience

Ferret Tools

All ratings23 ratings

Positive47.8%

Neutral8.7%

Negative43.5%

Written reviews26 reviews

Positive26.9%

Neutral3.8%

Negative69.2%

Mike Holt's Electrical Toolbox

All ratings197 ratings

Positive90.4%

Neutral1.5%

Negative8.1%

Written reviews30 reviews

Positive76.7%

Neutral6.7%

Negative16.7%

Bugs and requests

Ferret Tools

Not enough reviews yet to summarise bugs or requests.

Mike Holt's Electrical Toolbox

Reported bugs

4 issues

Cannot email results
Video player widescreen exit bug
Previous calculation data not erased
App content is outdated

Requested features

6 requests

Increase transformer capacity to 225kva
Add option to print load calc
Update to NEC 2020
Add completion system for video series
Refine user interface for better usability

Show 1 more

Add more features, willing to pay extra

In-app purchases

None

Ferret Tools

No in-app purchases

None

Mike Holt's Electrical Toolbox

No in-app purchases

Questions

Is Ferret Tools free?

Ferret Tools is free to download, with no in-app purchases.

Is Mike Holt's Electrical Toolbox free?

Mike Holt's Electrical Toolbox is free to download, with no in-app purchases.

Which has better reviews, Ferret Tools or Mike Holt's Electrical Toolbox?

Mike Holt's Electrical Toolbox is rated higher. Ferret Tools averages 3.1 out of 5 from 23 ratings, while Mike Holt's Electrical Toolbox averages 4.6 from 197 ratings.

Do Ferret Tools or Mike Holt's Electrical Toolbox have ads?

Neither Ferret Tools nor Mike Holt's Electrical Toolbox shows ads.

Which is updated more often, Ferret Tools or Mike Holt's Electrical Toolbox?

Ferret Tools ships an update every 6 weeks, and Mike Holt's Electrical Toolbox every 3 months. Most recently, Ferret Tools was updated on September 25, 2026 and Mike Holt's Electrical Toolbox on September 21, 2026.