# Construction Calculator vs SM Calculator

The clearest difference is in-app purchases: SM Calculator at none against Construction Calculator's 9. SM Calculator also leads on update cadence (daily vs every 5 days) and rating (5.0 vs 4.7). Construction Calculator's advantage is ratings volume (669 vs 2). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Construction Calculator sells 8 in-app purchases, starting at $4.99 per month. SM Calculator asks for nothing beyond the download.

SM Calculator holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Construction Calculator has 669 ratings behind it against 2, so its average is the more settled of the two.

Construction Calculator ships an update every 5 days, SM Calculator daily. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Construction Calculator | SM Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (669 ratings)](https://appshunter.io/ios/app/construction-calculator/id1092417398/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sm-calculator/id1663949657/reviews)** |
| Number of ratings | **669** | 2 |
| Positive reviews | 53.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 50 MB | 8 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [xNeat.com](https://appshunter.io/developer/327498295) | [Body Culture](https://appshunter.io/developer/910681467) |

## What reviewers say

### Construction Calculator

[App page](https://appshunter.io/ios/app/construction-calculator/id1092417398)

This app is a powerful calculator designed for construction and woodworking professionals, as well as students. It simplifies calculations involving feet, inches, and fractions, offering conversions between various measurement units and displaying equations and results simultaneously. Advanced features are available through optional in-app purchases.

**Highlights:** Decimal to fraction converter, Fraction to decimal conversion, Simultaneous equation and result display, Advanced editing capabilities, Today Screen integration, Support for multiple dimensional formats

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Construction Calculator | $4.99 | per month |
| Construction Calculator | $39.99 | per year |
| Themes | $1.99 | one-time |
| Calculator Plus | $3.99 | one-time |
| Rafter | $4.99 | one-time |
| Stair Calculator | $4.99 | one-time |
| Fraction Calculator | $9.99 | one-time |
| Construction Calculator | $14.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick and accurate calculations
- 💡 Helpful for construction work
- 🎨 Customizable colors

**What reviewers complain about**

- 💰 Subscription model is too expensive
- 🔒 Paywall locks out useful features
- 🔄 Forced updates break existing functionality
- 🤯 Confusing and difficult to navigate

**Reported bugs**

- Calculation errors and incorrect results
- Freezing and crashing on certain devices
- Compatibility issues with newer OS versions

**Requested features**

- Bring back fraction display in results
- Allow offline use without subscription
- Add more construction-specific tools
- Improve user interface and usability


### SM Calculator

[App page](https://appshunter.io/ios/app/sm-calculator/id1663949657)

Easily convert between standard and metric units for calculations. Supports decimal and fraction values in inches, and millimeters. Tap values to see equivalents or add them to a pin list for quick access.

**Highlights:** Cross-unit calculations, Decimal and fraction support, Metric unit conversion, Tap to convert values, Pin list for quick access, Conversion table

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

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator free?

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

### Is SM Calculator free?

SM Calculator is free to download, with no in-app purchases.

### Which has better reviews, Construction Calculator or SM Calculator?

SM Calculator is rated higher. Construction Calculator averages 4.7 out of 5 from 669 ratings, while SM Calculator averages 5.0 from 2 ratings.

### Do Construction Calculator or SM Calculator have ads?

Neither Construction Calculator nor SM Calculator shows ads.

### Which is updated more often, Construction Calculator or SM Calculator?

Construction Calculator ships an update every 5 days, and SM Calculator daily. Most recently, Construction Calculator was updated on October 25, 2026 and SM Calculator on October 23, 2026.

---

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