Mike Holt's Electrical Toolbox vs MU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Conductor sizing
- Voltage drop limitations
- Circuit protection sizing
- Race sizing
- Equipment grounding conductor sizing
- Dwelling-unit service calculations
Read full descriptionHide 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.
MU
This application serves as a unified platform for managing intelligent network products. It allows for uniform management of devices within a local area network.
- Unified platform
- Intelligent network product management
- Local area network management
- Device management
Read full descriptionHide full description
MU-LINK APP is a unified platform for managing intelligent network products, which can be used to manage uniformly within the local area network.
Screenshots
Verdict
The clearest difference is rating: Mike Holt's Electrical Toolbox at 4.6 against MU's 2.4. Mike Holt's Electrical Toolbox also leads on review sentiment (77% vs 40%) and ratings volume (197 vs 5). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Mike Holt's Electrical Toolbox holds the better App Store score, 4.6 against 2.4. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 197 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 77% of Mike Holt's Electrical Toolbox's written reviews are positive against 40% of MU's.
Mike Holt's Electrical Toolbox ships an update every 3 months, MU every 2 months. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | Mike Holt's Electrical Toolbox | MU |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (197 ratings) — better | 2.4 (5 ratings) |
| Positive reviews | 76.7% of reviews — better | 40.0% of reviews |
| Number of ratings | 197 — better | 5 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 26 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Mike Holt Enterprises | Shenzhen Dbit Network Equipment Co., Ltd |
Customer experience
Mike Holt's Electrical Toolbox
MU
Bugs and 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 moreShow fewer
- Add more features, willing to pay extra
MU
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mike Holt's Electrical Toolbox
No in-app purchases
MU
No in-app purchases
Questions
Is Mike Holt's Electrical Toolbox free?
Is MU free?
Which has better reviews, Mike Holt's Electrical Toolbox or MU?
Do Mike Holt's Electrical Toolbox or MU have ads?
Which is updated more often, Mike Holt's Electrical Toolbox or MU?
Other comparisons
