# Certillion vs Protlarm

The clearest difference is iOS requirement: Protlarm at 13.4 against Certillion's 16.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Certillion ships an update every 5 weeks, Protlarm every 2 months. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Certillion | Protlarm |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 6.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 33 MB | 41 MB |
| Requires iOS | 16.1 | **13.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [e-Sec](https://appshunter.io/developer/657383169) | [Quadion Tecnologia](https://appshunter.io/developer/1580603967) |

## What reviewers say

### Certillion

[App page](https://appshunter.io/ios/app/certillion/id1489758453)

Sign documents on your mobile device using digital certificates. This app offers legal validity, internet speed, and mobile convenience for contracts, bills, and other secure transactions. Obtain a digital certificate for free at registered locations or use your existing A1 certificate.

**Highlights:** Sign documents with digital certificates, Legal validity for transactions, Mobile convenience for signing anywhere, Securely sign contracts and bills, Free digital certificate acquisition

**In-app purchases:** none


### Protlarm

[App page](https://appshunter.io/ios/app/protlarm/id6499367220)

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

**In-app purchases:** none


## Frequently asked questions

### Is Certillion free?

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

### Is Protlarm free?

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

### Do Certillion or Protlarm have ads?

Neither Certillion nor Protlarm shows ads.

### Which is updated more often, Certillion or Protlarm?

Certillion ships an update every 5 weeks, and Protlarm every 2 months. Most recently, Certillion was updated on October 13, 2026 and Protlarm on October 9, 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.*