# Construction Calc Pro 2 vs SMT Controller

The clearest difference is price: SMT Controller at Free against Construction Calc Pro 2's $13.99. SMT Controller also leads on iOS requirement (15.0 vs 17.5). Construction Calc Pro 2's advantage is in-app purchases (none vs 5) and chart position (#184 vs unranked). On update cadence, ads and device support there is nothing between them.

SMT Controller is free to download; Construction Calc Pro 2 costs $13.99 up front. SMT Controller sells 5 one-off in-app purchases. Construction Calc Pro 2 asks for nothing beyond the download.

Construction Calc Pro 2 ships an update every 2 months, SMT Controller every 4 months. The most recent releases landed on September 5, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Construction Calc Pro 2 | SMT Controller |
| --- | --- | --- |
| Price | $13.99 | **Free** |
| Rating | **[4.5 (6 ratings)](https://appshunter.io/ios/app/construction-calc-pro-2/id6446281301/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | — |
| Best chart rank | **#184** | — |
| Size | 85 MB | 142 MB |
| Requires iOS | 17.5 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) | [GUNPOWER](https://appshunter.io/developer/1869202061) |

## What reviewers say

### Construction Calc Pro 2

[App page](https://appshunter.io/ios/app/construction-calc-pro-2/id6446281301)

**Currently charting:** #184 Top Paid · Utilities (US App Store)

This powerful calculator app is designed specifically for construction professionals, enabling calculations in feet, inches, and fractional inches. It offers specialized modules for material estimates, conversions, area and volume calculations, trigonometry, and stair design, transforming your device into a comprehensive construction computer.

**Highlights:** Calculations in feet, inches, and fractional inches, Material estimation modules, Conversions for various measurements, Area and volume calculations, Trigonometry and triangle solver, Stairwell and stair calculator, Crown moulding module

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

**In-app purchases:** none


### SMT Controller

[App page](https://appshunter.io/ios/app/smt-controller/id6757835838)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5,000 Credit | $2.99 | one-time |
| 10,000 Credit | $5.99 | one-time |
| 15,000 Credit | $9.99 | one-time |
| 20,000 Credit | $11.99 | one-time |
| 30,000 Credit | $19.99 | one-time |


## Frequently asked questions

### Is Construction Calc Pro 2 free?

Construction Calc Pro 2 costs $13.99, with no in-app purchases.

### Is SMT Controller free?

SMT Controller is free to download, with in-app purchases available.

### Do Construction Calc Pro 2 or SMT Controller have ads?

Neither Construction Calc Pro 2 nor SMT Controller shows ads.

### Which is updated more often, Construction Calc Pro 2 or SMT Controller?

Construction Calc Pro 2 ships an update every 2 months, and SMT Controller every 4 months. Most recently, Construction Calc Pro 2 was updated on September 5, 2026 and SMT Controller on September 21, 2026.

---

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