# Mike Holt's Electrical Toolbox vs Flowserve FlowSync

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.

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.

## The numbers

| Metric | Mike Holt's Electrical Toolbox | Flowserve FlowSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (197 ratings)](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/flowserve-flowsync/id1622634697/reviews)** |
| Number of ratings | **197** | 2 |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 8 months |
| Monetization | Free | Free |
| Size | 26 MB | 170 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mike Holt Enterprises](https://appshunter.io/developer/1349960186) | [Flowserve Corp](https://appshunter.io/developer/1243575241) |

## What reviewers say

### Mike Holt's Electrical Toolbox

[App page](https://appshunter.io/ios/app/mike-holts-electrical-toolbox/id1406630647)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

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

**What reviewers complain about**

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- 🐛 Outdated information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

**Reported bugs**

- Cannot email results
- Video player widescreen exit bug
- Previous calculation data not erased
- App content is outdated

**Requested features**

- 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


### Flowserve FlowSync

[App page](https://appshunter.io/ios/app/flowserve-flowsync/id1622634697)

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.

**Highlights:** Remote actuator control via Bluetooth, View advanced diagnostics, Capture screenshots for reports, Create and save actuator configurations, Push configurations to multiple actuators

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mike Holt's Electrical Toolbox free?

Mike Holt's Electrical Toolbox is free to download, with no in-app purchases.

### Is Flowserve FlowSync free?

Flowserve FlowSync is free to download, with no in-app purchases.

### Which has better reviews, Mike Holt's Electrical Toolbox or Flowserve FlowSync?

Flowserve FlowSync is rated higher. Mike Holt's Electrical Toolbox averages 4.6 out of 5 from 197 ratings, while Flowserve FlowSync averages 5.0 from 2 ratings.

### Do Mike Holt's Electrical Toolbox or Flowserve FlowSync have ads?

Neither Mike Holt's Electrical Toolbox nor Flowserve FlowSync shows ads.

### Which is updated more often, Mike Holt's Electrical Toolbox or Flowserve FlowSync?

Mike Holt's Electrical Toolbox ships an update every 3 months, and Flowserve FlowSync every 8 months. Most recently, Mike Holt's Electrical Toolbox was updated on October 16, 2026 and Flowserve FlowSync on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*