# Aje Proyectos vs Certezia

The clearest difference is in-app purchases: Aje Proyectos at none against Certezia's 1. Aje Proyectos also leads on iOS requirement (12.4 vs 16.0). Certezia's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Certezia sells 1 in-app purchase, starting at $3.99 per year. Aje Proyectos asks for nothing beyond the download.

Aje Proyectos ships an update every 2 months, Certezia every 2 weeks. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Aje Proyectos | 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 50 MB | 112 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Mapsalud SAC](https://appshunter.io/developer/1338491023) | [Certezia EIRL](https://appshunter.io/developer/1859511027) |

## What reviewers say

### Aje Proyectos

[App page](https://appshunter.io/ios/app/aje-proyectos/id6502269261)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Aje Proyectos free?

Aje Proyectos is free to download, with no in-app purchases.

### Is Certezia free?

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

### Do Aje Proyectos or Certezia have ads?

Neither Aje Proyectos nor Certezia shows ads.

### Which is updated more often, Aje Proyectos or Certezia?

Aje Proyectos ships an update every 2 months, and Certezia every 2 weeks. Most recently, Aje Proyectos was updated on October 3, 2026 and Certezia on October 4, 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.*