# Construction Master Pro Calc vs ECHO Command

The clearest difference is review sentiment: ECHO Command at 100% against Construction Master Pro Calc's 60%. ECHO Command also leads on in-app purchases (none vs 20) and iOS requirement (11.0 vs 15.0). Construction Master Pro Calc's advantage is ratings volume (40K vs 2) and rating (4.8 vs 4.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month. ECHO Command asks for nothing beyond the download.

Construction Master Pro Calc holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 60% of Construction Master Pro Calc's written reviews are positive against 100% of ECHO Command's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 11, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Construction Master Pro Calc | ECHO Command |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (40K ratings)](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/echo-command/id1494939909/reviews) |
| Number of ratings | **40K** | 2 |
| Positive reviews | 59.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#48** | — |
| Size | 111 MB | 22 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [ECHO Incorporated](https://appshunter.io/developer/1494939908) |

## What reviewers say

### Construction Master Pro Calc

[App page](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446)

**Currently charting:** #48 Top Grossing · Utilities (US App Store)

This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.

**Highlights:** Dimensional math and conversions, Right angle and rafter calculations, Area and volume solutions, Full trigonometric functions, Built-in user's guide and help, Save and share calculations, Project notes and attachments

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $3.69 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| CMPro Full Access | $9.99 | per year |
| 6 Months Full Access | $19.99 | per 6 months |
| 1 Year Full Access | $19.99 | per year |
| 1 Year Full Access | $29.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 🚀 Convenient and always available
- ⚙️ Comprehensive construction calculations
- 💪 Industry-standard tool
- 🔍 Accurate and reliable
- 📱 Integrates well with mobile devices

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🔒 Locks data behind subscription
- 🔄 Forced to re-purchase after device changes
- 🔍 Lacks full metric support
- 🔧 Occasional UI/UX issues

**Reported bugs**

- Crashes or freezes on certain devices
- Calculation errors in some scenarios
- Inconsistent behavior after updates

**Requested features**

- Add metric unit support
- Offer one-time purchase option
- Improve backup and data transfer
- Add more customization options
- Enhance overall user experience


### ECHO Command

[App page](https://appshunter.io/ios/app/echo-command/id1494939909)

Monitor your ECHO inverter generator's fuel level, load, and runtime remotely via Bluetooth. The app allows for overload reset and shutdown, mirroring the generator's LCD display. It also supports parallel function for specific models.

**Highlights:** Real-time fuel level monitoring, Real-time load level monitoring, Remaining runtime display, Remote overload reset, Remote shutdown, Parallel function support (EGi-2300)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Construction Master Pro Calc free?

Construction Master Pro Calc is free to download, with in-app purchases available.

### Is ECHO Command free?

ECHO Command is free to download, with no in-app purchases.

### Which has better reviews, Construction Master Pro Calc or ECHO Command?

Construction Master Pro Calc is rated higher. Construction Master Pro Calc averages 4.8 out of 5 from 40K ratings, while ECHO Command averages 4.5 from 2 ratings.

### Do Construction Master Pro Calc or ECHO Command have ads?

Neither Construction Master Pro Calc nor ECHO Command shows ads.

### Which is updated more often, Construction Master Pro Calc or ECHO Command?

Construction Master Pro Calc ships an update every 3 weeks, and ECHO Command every 3 weeks. Most recently, Construction Master Pro Calc was updated on October 11, 2026 and ECHO Command on September 18, 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.*