# Construction Calculator vs E3 Connect

The clearest difference is in-app purchases: E3 Connect at none against Construction Calculator's 12. E3 Connect also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price and ads there is nothing between them.

Both are free to download. Construction Calculator sells 12 in-app purchases, starting at $2.99 per 7 days. E3 Connect asks for nothing beyond the download.

## The numbers

| Metric | Construction Calculator | E3 Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (19 ratings)](https://appshunter.io/ios/app/construction-calculator-pro/id6753908597/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 32 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Shapkin Dev](https://appshunter.io/developer/1845645309) | [Solomon Consulting Group, LLC](https://appshunter.io/developer/1850192231) |

## What reviewers say

### Construction Calculator

[App page](https://appshunter.io/ios/app/construction-calculator-pro/id6753908597)

This app provides a comprehensive suite of tools for construction professionals and DIY enthusiasts. It offers precise calculations for decking, roofing, stairs, concrete, and more, with support for both metric and imperial units. Designed for jobsite use, it works offline and provides clear visuals for accurate on-site measurements.

**Highlights:** Decking and flooring calculations, Roofing material and coverage estimators, Stair and stringer rise/run calculations, Concrete, asphalt, and gravel volume estimators, Slope, pitch, and angle framing helpers, Unit converter with mixed-unit support, Offline functionality

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Carpenter PRO - Weekly | $2.99 | per 7 days |
| Carpenter PRO — Annual | $19.99 | per year |
| RL Level & Benchmark Calculator | $3.99 | one-time |
| Gravel Volume Calculator | $3.99 | one-time |
| Stair Stringer & Rise Run Calc | $3.99 | one-time |
| Soil Excavation Volume Calculator | $3.99 | one-time |
| Asphalt Tonnage Calculator | $3.99 | one-time |
| Right Triangle & Pitch Calculator | $3.99 | one-time |
| Running Measurements Calculator | $3.99 | one-time |
| Unit Converter: Feet & Metric | $3.99 | one-time |
| Paint Area Coverage Estimator | $3.99 | one-time |
| Lifetime Access | $39.99 | one-time |


### E3 Connect

[App page](https://appshunter.io/ios/app/e3-connect/id6754805901)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator free?

Construction Calculator is free to download, with in-app purchases available.

### Is E3 Connect free?

E3 Connect is free to download, with no in-app purchases.

### Do Construction Calculator or E3 Connect have ads?

Neither Construction Calculator nor E3 Connect shows ads.

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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.*