# Customs Duty Verification vs Construction & Interior Calc

The clearest difference is in-app purchases: Customs Duty Verification at none against Construction & Interior Calc's 1. Customs Duty Verification also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Construction & Interior Calc sells 1 in-app purchase, starting at $2.99 per month. Customs Duty Verification asks for nothing beyond the download.

Customs Duty Verification ships an update monthly, Construction & Interior Calc every 5 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Customs Duty Verification | Construction & Interior Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Size | 61 MB | 27 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [General Department of Customs and Excise of Cambodia](https://appshunter.io/developer/1218176128) | [Ali Hamza](https://appshunter.io/developer/6795279462) |

## What reviewers say

### Customs Duty Verification

[App page](https://appshunter.io/ios/app/customs-duty-verification/id1446820516)

**Features:** macOS Compatibility

**In-app purchases:** none


### Construction & Interior Calc

[App page](https://appshunter.io/ios/app/construction-and-interior-calc/id6795282370)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BuildCalc Premium Monthly | $2.99 | per month |


## Frequently asked questions

### Is Customs Duty Verification free?

Customs Duty Verification is free to download, with no in-app purchases.

### Is Construction & Interior Calc free?

Construction & Interior Calc is free to download, with in-app purchases available.

### Do Customs Duty Verification or Construction & Interior Calc have ads?

Neither Customs Duty Verification nor Construction & Interior Calc shows ads.

### Which is updated more often, Customs Duty Verification or Construction & Interior Calc?

Customs Duty Verification ships an update monthly, and Construction & Interior Calc every 5 weeks. Most recently, Customs Duty Verification was updated on November 2, 2026 and Construction & Interior Calc on October 31, 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.*