Comparison

EREC 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

EREC

Free

🔧 Utilities

★ 3.65 ratingsView app →

Mike Holt's Electrical Toolbox

Electrical Power Calculator

Free

🔧 Utilities

★ 4.6196 ratingsView app →

About

EREC

Manage your account details, view bills and balances, and make payments securely on the go. Schedule alerts, receive push notifications, and access nearly all online features instantly from your mobile device.

Highlights

Secure account access
View bill and balance
Make payments
Schedule alerts
Receive push notifications
Manage account details

Features

Read full description

Our Mobile App is designed to give you fast, secure account access so you can easily manage your account details, view your bill and account balance, make payments and find payment locations, schedule alerts and reminders, receive push notifications, and more. Nearly everything you can do from our Online Account Center can now be handled instantly whether you’re at home, at work, or on the go.

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

EREC4 screens

Mike Holt's Electrical Toolbox4 screens

Verdict

The call

The clearest difference is rating: Mike Holt's Electrical Toolbox at 4.6 against EREC's 3.6. Mike Holt's Electrical Toolbox also leads on ratings volume (196 vs 5) and update cadence (every 3 months vs every 6 months). EREC's advantage is iOS requirement (12.0 vs 14.0). 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 3.6. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 196 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 67% of EREC's written reviews are positive against 77% of Mike Holt's Electrical Toolbox's.

UpkeepUpdate frequency

EREC ships an update every 6 months, Mike Holt's Electrical Toolbox every 3 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

Scorecard5 real differences · 5 level

EREC versus Mike Holt's Electrical Toolbox: the parameters behind the verdict, then further details
Parameter	EREC	Mike Holt's Electrical Toolbox
Price	Free	Free
Rating	3.6 (5 ratings)	4.6 (196 ratings) — better
Positive reviews	66.7% of reviews	76.7% of reviews — better
Number of ratings	5	196 — better
Update frequency	Every 6 months	Every 3 months — better
Ads	No	No
In-app purchases	No	No
Monetization	Free	Free
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0 — better	14.0
Further details — not scored
Size	174 MB	26 MB
Age rating	4+	4+
Developer	Escambia River Electric Cooperative, Inc.	Mike Holt Enterprises

Customer experience

EREC

All ratings5 ratings

Positive60.0%

Neutral20.0%

Negative20.0%

Written reviews3 reviews

Positive66.7%

Neutral0.0%

Negative33.3%

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

EREC

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

EREC

No in-app purchases

None

Mike Holt's Electrical Toolbox

No in-app purchases

Questions

Is EREC free?

EREC 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, EREC or Mike Holt's Electrical Toolbox?

Mike Holt's Electrical Toolbox is rated higher. EREC averages 3.6 out of 5 from 5 ratings, while Mike Holt's Electrical Toolbox averages 4.6 from 196 ratings.

Do EREC or Mike Holt's Electrical Toolbox have ads?

Neither EREC nor Mike Holt's Electrical Toolbox shows ads.

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

EREC ships an update every 6 months, and Mike Holt's Electrical Toolbox every 3 months. Most recently, EREC was updated on October 23, 2026 and Mike Holt's Electrical Toolbox on October 21, 2026.