Mike Holt's Electrical Toolbox vs Flowserve FlowSync
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.
Flowserve FlowSync
Control and monitor MXb Smart Actuators remotely via Bluetooth from an iOS tablet. View detailed diagnostics, capture screenshots for reports, and create/save actuator configurations for easy deployment.
- Remote actuator control via Bluetooth
- View advanced diagnostics
- Capture screenshots for reports
- Create and save actuator configurations
- Push configurations to multiple actuators
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This is a Bluetooth utility designed to allow Flowserve Customer to control their MXb Smart Actuators from their IOS Tablet. This is designed to help customers who have units in hard to reach areas as they can control the unit from a distance. The large screen of a tablet also helps customers view advanced diagnostics items in a detailed way and capture screenshots to create performance reports. The app also allows customers to create Actuator Configurations which can be saved to the tablet and then pushed to one or multiple actuators without ever moving the knobs on the units.
Screenshots
Verdict
The clearest difference is rating: Flowserve FlowSync at 5.0 against Mike Holt's Electrical Toolbox's 4.6. Flowserve FlowSync also leads on iOS requirement (9.0 vs 14.0). Mike Holt's Electrical Toolbox's advantage is ratings volume (197 vs 2) and update cadence (every 3 months vs every 8 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.
Flowserve FlowSync 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 197 ratings behind it against 2, so its average is the more settled of the two.
Mike Holt's Electrical Toolbox ships an update every 3 months, Flowserve FlowSync every 8 months. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.
| Parameter | Mike Holt's Electrical Toolbox | Flowserve FlowSync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (197 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 76.7% of reviews | — |
| Number of ratings | 197 — better | 2 |
| Update frequency | Every 3 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 170 MB |
| Age rating | 4+ | 4+ |
| Developer | Mike Holt Enterprises | Flowserve Corp |
Customer experience
Mike Holt's Electrical Toolbox
Flowserve FlowSync
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
Flowserve FlowSync
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mike Holt's Electrical Toolbox
No in-app purchases
Flowserve FlowSync
No in-app purchases
Questions
Is Mike Holt's Electrical Toolbox free?
Is Flowserve FlowSync free?
Which has better reviews, Mike Holt's Electrical Toolbox or Flowserve FlowSync?
Do Mike Holt's Electrical Toolbox or Flowserve FlowSync have ads?
Which is updated more often, Mike Holt's Electrical Toolbox or Flowserve FlowSync?
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