# DMX Constructor Pro vs Certezia

DMX Constructor Pro and Certezia are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. DMX Constructor Pro sells 2 one-off in-app purchases and Certezia sells 1 in-app purchase, starting at $3.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | DMX Constructor Pro | Certezia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/certezia/id6756247213/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | — | Free |
| Size | 60 MB | 113 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Kenlly Calderon Morales](https://appshunter.io/developer/1840277346) | [Certezia EIRL](https://appshunter.io/developer/1859511027) |

## What reviewers say

### DMX Constructor Pro

[App page](https://appshunter.io/ios/app/dmx-constructor-pro/id6752628562)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 14-Day Free Trial | Free | one-time |
| DMX Constructor Pro | $14.99 | one-time |


### Certezia

[App page](https://appshunter.io/ios/app/certezia/id6756247213)

Digitally sign documents securely and legally in Peru using your electronic National Identity Document (DNIe) and NFC technology. This app allows for quick and easy signing directly from your smartphone, eliminating the need for extra hardware or certificates.

**Highlights:** Digital document signing, Utilizes DNIe and NFC, Smartphone signing, Legal compliance in Peru, No USB readers or extra certificates needed

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Firma Personal Premium | $3.99 | per year |


## Frequently asked questions

### Is DMX Constructor Pro free?

DMX Constructor Pro is free to download, with in-app purchases available.

### Is Certezia free?

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

### Do DMX Constructor Pro or Certezia have ads?

Neither DMX Constructor Pro nor Certezia shows ads.

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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.*