Mike Holt's Electrical Toolbox vs Intelli
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
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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.
Intelli
This application allows users to communicate with an AFCI breaker via Bluetooth. It provides diagnostic measurements, setup options, and the ability to view load waveforms, mimicking oscilloscope functionality. This eliminates the need for a physical oscilloscope when troubleshooting electrical loads.
- Bluetooth communication with AFCI breaker
- Basic diagnostic measurements
- Setup and view load waveforms
- Mimics oscilloscope functionality
- Troubleshooting electrical loads
- Arc detection algorithm improvement
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We have developed an AFCI breaker which we are able to communicate with this app via bluetooth. Apart from providing basic diagnostic measurements for this breaker, the App also provides a way to setup and view load waveforms seen by the breaker mimicking the oscilloscope functionality. The App when combined with a breaker with BLE communication, eliminates the need for a physical oscilloscope while troubleshooting or diagnosing problematic electrical loads. Engineers are able to use this app to diagnose why a tripping event is happening and to also improve arc detection algorithm.
Screenshots
Verdict
The clearest difference is rating: Mike Holt's Electrical Toolbox at 4.6 against Intelli's 4.0. Mike Holt's Electrical Toolbox also leads on ratings volume (197 vs 4). 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 4.0. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 197 ratings behind it against 4, so its average is the more settled of the two.
Mike Holt's Electrical Toolbox ships an update every 3 months, Intelli every 5 months. The most recent releases landed on October 26, 2026 and October 8, 2026 respectively.
| Parameter | Mike Holt's Electrical Toolbox | Intelli |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (197 ratings) — better | 4.0 (4 ratings) |
| Positive reviews | 76.7% of reviews | — |
| Number of ratings | 197 — better | 4 |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 26 MB | 80 MB |
| Age rating | 4+ | 4+ |
| Developer | Mike Holt Enterprises | Siemens AG |
Customer experience
Mike Holt's Electrical Toolbox
Intelli
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
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- Add more features, willing to pay extra
Intelli
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mike Holt's Electrical Toolbox
No in-app purchases
Intelli
No in-app purchases
Questions
Is Mike Holt's Electrical Toolbox free?
Is Intelli free?
Which has better reviews, Mike Holt's Electrical Toolbox or Intelli?
Do Mike Holt's Electrical Toolbox or Intelli have ads?
Which is updated more often, Mike Holt's Electrical Toolbox or Intelli?
Other comparisons
