# Construction Calculator+ vs Convert Units Calculator

The clearest difference is price: Convert Units Calculator at Free against Construction Calculator+'s $1.99. Convert Units Calculator also leads on update cadence (every 2 months vs every 10 months). Construction Calculator+'s advantage is iOS requirement (13.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.

Convert Units Calculator is free to download; Construction Calculator+ costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Construction Calculator+ ships an update every 10 months, Convert Units Calculator every 2 months. The most recent releases landed on September 29, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Construction Calculator+ | Convert Units Calculator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 2 months** |
| Size | 22 MB | 49 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JanoGroup LLC](https://appshunter.io/developer/1781461557) | [Nelson Lai](https://appshunter.io/developer/1477911199) |

## What reviewers say

### Construction Calculator+

[App page](https://appshunter.io/ios/app/construction-calculator-plus/id6744340921)

**Features:** macOS Compatibility

**In-app purchases:** none


### Convert Units Calculator

[App page](https://appshunter.io/ios/app/convert-units-calculator/id6758808738)

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

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator+ free?

Construction Calculator+ costs $1.99, with no in-app purchases.

### Is Convert Units Calculator free?

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

### Do Construction Calculator+ or Convert Units Calculator have ads?

Both Construction Calculator+ and Convert Units Calculator show ads.

### Which is updated more often, Construction Calculator+ or Convert Units Calculator?

Construction Calculator+ ships an update every 10 months, and Convert Units Calculator every 2 months. Most recently, Construction Calculator+ was updated on September 29, 2026 and Convert Units Calculator on October 20, 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.*