Mike Holt's Electrical Toolbox vs ExView®
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.
ExView®
This app connects to compatible meters to collect, trend, and analyze environmental data remotely. It allows for real-time monitoring, setting alarms, and generating custom PDF reports with photos. Data can be easily shared with team members.
- Remote data collection and trending
- Real-time dashboard view
- Bluetooth connectivity up to 90m
- Programmable high/low alarms
- Export data as CSV
- Generate custom PDF reports
- Attach photos to reports
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About the ExView® The EXTECH 250W Series compatible with the ExView® Mobile App. Connect up to 8 meters of any combination to measure and trend various parameters to help accurately diagnose environmental conditions and inspect/maintain HVAC and rotating equipment. The ExView® Mobile App is an easy-to-use powerful mobile data collection and reporting app. The dashboard provides a quick at-a-glance view of real-time data being collected from all of your EXTECH 250W connected meters. Users can monitor and collect data remotely from the meter(s), this is especially useful when you need to collect data in difficult to access areas. The meter(s) will communicate with the app via Bluetooth® up to a distance of 90 m (295 ft). In addition, you can set min/max alarms to improve response times to potential issues. The app enables you to quickly share data with team members either as a quick .CSV file or a comprehensive PDF report that can include photos of the impacted area/equipment. App Highlights Include: • Portable data collection, trending, analysis and reporting • Visualize Data and trends on your mobile device • Programmable High/Low audible alarms • Export data in .CSV file format • Generate Custom report in PDF • Take snapshots of the measurement area with your smart device • Day mode/Dark mode screen feature • Share data files directly from your mobile device • Connect up to 8 EXTECH 250W meters, any combination • AN250W Anemometer • LT250W Light Meter • SL250W Sound Level Meter • RH250W Hygro-Thermometer • RPM250W Laser Tachometer Please supply all feedback to: feedback@extech.com Thank you. EXTECH Digital Solutions Team
Screenshots
Verdict
The clearest difference is rating: ExView® at 5.0 against Mike Holt's Electrical Toolbox's 4.6. Mike Holt's Electrical Toolbox's advantage is ratings volume (198 vs 1) and update cadence (every 3 months vs every 6 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ExView® holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Mike Holt's Electrical Toolbox has 198 ratings behind it against 1, so its average is the more settled of the two.
Mike Holt's Electrical Toolbox ships an update every 3 months, ExView® every 6 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | Mike Holt's Electrical Toolbox | ExView® |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (198 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 76.7% of reviews | — |
| Number of ratings | 198 — better | 1 |
| Update frequency | Every 3 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 92 MB |
| Age rating | 4+ | 4+ |
| Developer | Mike Holt Enterprises | Extech Instruments |
Customer experience
Mike Holt's Electrical Toolbox
ExView®
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
ExView®
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mike Holt's Electrical Toolbox
No in-app purchases
ExView®
No in-app purchases
Questions
Is Mike Holt's Electrical Toolbox free?
Is ExView® free?
Which has better reviews, Mike Holt's Electrical Toolbox or ExView®?
Do Mike Holt's Electrical Toolbox or ExView® have ads?
Which is updated more often, Mike Holt's Electrical Toolbox or ExView®?
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