Comparison

Show Box 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

Show Box

Free

🔧 Utilities

★ 2.7147 ratingsView app →

Mike Holt's Electrical Toolbox

Electrical Power Calculator

Free

🔧 Utilities

★ 4.6196 ratingsView app →

About

Show Box

Easily create custom holiday light shows with pre-programmed functions. Synchronize your lights to music and design unique visual displays with a simple tap.

Highlights

Create holiday light shows
Pre-programmed functions
Synchronized to music
Simple tap interface

Features

Read full description

Creating your own holiday tree/lights light show is as simple as a tap of your finger. Choose from a selection of following pre-programmed functions that synchronized to Show Box.

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

Show Box4 screens

Mike Holt's Electrical Toolbox4 screens

Verdict

The call

The clearest difference is review sentiment: Mike Holt's Electrical Toolbox at 77% against Show Box's 13%. Mike Holt's Electrical Toolbox also leads on rating (4.6 vs 2.7) and update cadence (every 3 months vs every 8 months). Show Box's advantage is iOS requirement (6.0 vs 14.0). On price, ratings volume, ads and in-app purchases 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 2.7. Both are backed by a comparable volume of ratings — 147 and 196 respectively. Written reviews point the same way: 13% of Show Box's written reviews are positive against 77% of Mike Holt's Electrical Toolbox's.

UpkeepUpdate frequency

Show Box ships an update every 8 months, Mike Holt's Electrical Toolbox every 3 months. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 6 level

Show Box versus Mike Holt's Electrical Toolbox: the parameters behind the verdict, then further details
Parameter	Show Box	Mike Holt's Electrical Toolbox
Price	Free	Free
Rating	2.7 (147 ratings)	4.6 (196 ratings) — better
Positive reviews	12.9% of reviews	76.7% of reviews — better
Number of ratings	147	196 — better
Update frequency	Every 8 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	6.0 — better	14.0
Further details — not scored
Size	69 MB	26 MB
Age rating	4+	4+
Developer	江海聂	Mike Holt Enterprises

Customer experience

Show Box

All ratings147 ratings

Positive36.7%

Neutral15.0%

Negative48.3%

Written reviews85 reviews

Positive12.9%

Neutral12.9%

Negative74.1%

Mike Holt's Electrical Toolbox

All ratings197 ratings

Positive90.4%

Neutral1.5%

Negative8.1%

Written reviews30 reviews

Positive76.7%

Neutral6.7%

Negative16.7%

User reviews

Show Box

From 147 App Store ratings

What we love

🎵 Good sound quality and volume
📡 WiFi connectivity works when functioning properly
🎨 Light synchronization to music is impressive
⏱️ Timer function available
🎛️ Multiple music streaming options supported

Room to improve

🐛 Chronic WiFi connection failures
🐛 App crashes and force closes frequently
🐛 Pandora login completely broken
🐛 iTunes/Apple Music integration non-functional
🐛 AirPlay feature doesn't work

Mike Holt's Electrical Toolbox

From 196 App Store ratings

What we love

👍 Great app for electricians
💡 Provides code article references
👍 Useful for on-the-spot reference
👍 Excellent for verifying calculations
👍 Helpful for exam preparation

Room to improve

🐛 Emailing results not working
🐛 Outdated information
🐛 Load calc a little clunky
🐛 Content setup needs overhaul
🐛 Video series lacks completion system

Bugs and requests

Show Box

Reported bugs

13 issues

WiFi connection fails repeatedly despite correct password
App force closes on launch
Pandora login authentication broken
AirPlay functionality non-operational
iTunes purchased music not accessible

Show 8 more

Light function reverts to default setting (8) instead of user selection
iHeartRadio station selection takes excessive time
App doesn't recognize music library on device
Compatibility issues with latest iOS versions
Connection timeout errors between multiple ShowBox units
Static interference with aux cord connection
App requires manual reconnection after going out of WiFi range
Device must be manually turned off/on for app to recognize it

Requested features

11 requests

Spotify integration
Pandora login fix
Automatic daily scheduling (turn on/off at specific times)
Sensitivity adjustment controls
iTunes search functionality

Show 6 more

Bluetooth connectivity
Better light-to-music synchronization
Ability to select individual lights to sync with music
Offline music playback capability
One-time WiFi setup (remember credentials permanently)
Better device recognition (show only owned devices)

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

Show Box

No in-app purchases

None

Mike Holt's Electrical Toolbox

No in-app purchases

Questions

Is Show Box free?

Show Box 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, Show Box or Mike Holt's Electrical Toolbox?

Mike Holt's Electrical Toolbox is rated higher. Show Box averages 2.7 out of 5 from 147 ratings, while Mike Holt's Electrical Toolbox averages 4.6 from 196 ratings.

Do Show Box or Mike Holt's Electrical Toolbox have ads?

Neither Show Box nor Mike Holt's Electrical Toolbox shows ads.

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

Show Box ships an update every 8 months, and Mike Holt's Electrical Toolbox every 3 months. Most recently, Show Box was updated on October 20, 2026 and Mike Holt's Electrical Toolbox on October 21, 2026.