# Construction Calculator vs Pipe Rack Designer

The clearest difference is price: Construction Calculator at Free against Pipe Rack Designer's $3.99. Pipe Rack Designer's advantage is in-app purchases (none vs 10) and iOS requirement (16.0 vs 18.0). On update cadence, ads and device support there is nothing between them.

Construction Calculator is free to download; Pipe Rack Designer costs $3.99 up front. Construction Calculator sells 10 in-app purchases, starting at $2.99 per 7 days. Pipe Rack Designer asks for nothing beyond the download.

Construction Calculator ships an update every 2 weeks, Pipe Rack Designer fortnightly. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Construction Calculator | Pipe Rack Designer |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.8 (24 ratings)](https://appshunter.io/ios/app/construction-calculator-pro/id6753908597/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 60 MB | 8 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Shapkin Dev](https://appshunter.io/developer/1845645309) | [Netflowers Inc.](https://appshunter.io/developer/1672067319) |

## 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, offering precise calculations for decking, roofing, stairs, concrete, and more. It simplifies complex measurements and material takeoffs, ensuring accuracy and efficiency on the job site, even offline.

**Highlights:** Decking and flooring calculations, Roofing material and coverage estimators, Stair and stringer rise/run calculations, Concrete and volume estimators, Unit conversion for mixed units, Offline functionality

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Carpenter PRO - Weekly | $2.99 | per 7 days |
| Full Access — Weekly | $5.99 | per 7 days |
| Carpenter PRO — Annual | $19.99 | per year |
| Full Access | $39.99 | per year |
| 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 |
| Lifetime Access | $79.99 | one-time |


### Pipe Rack Designer

[App page](https://appshunter.io/ios/app/pipe-rack-designer-bom/id6792504712)

**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 Pipe Rack Designer free?

Pipe Rack Designer costs $3.99, with no in-app purchases.

### Do Construction Calculator or Pipe Rack Designer have ads?

Neither Construction Calculator nor Pipe Rack Designer shows ads.

### Which is updated more often, Construction Calculator or Pipe Rack Designer?

Construction Calculator ships an update every 2 weeks, and Pipe Rack Designer fortnightly. Most recently, Construction Calculator was updated on November 9, 2026 and Pipe Rack Designer on November 5, 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.*