# UOL Mail Pro vs Web PKI

The clearest difference is rating: UOL Mail Pro at 3.5 against Web PKI's 1.0. UOL Mail Pro also leads on update cadence (every 3 weeks vs every 3 months) and review sentiment (39% vs 25%). On price, ads, in-app purchases and monetization model there is nothing between them.

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

UOL Mail Pro holds the better App Store score, 3.5 against 1.0. That said, the two scores are not equally well evidenced: UOL Mail Pro has 31 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 39% of UOL Mail Pro's written reviews are positive against 25% of Web PKI's.

UOL Mail Pro ships an update every 3 weeks, Web PKI every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | UOL Mail Pro | Web PKI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (31 ratings)](https://appshunter.io/ios/app/uol-mail-pro/id1372865834/reviews)** | [1.0 (4 ratings)](https://appshunter.io/ios/app/web-pki/id1390701957/reviews) |
| Number of ratings | **31** | 4 |
| Positive reviews | **39.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 57 MB | 31 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [UOL Inc.](https://appshunter.io/developer/440898836) | [Lacuna Software](https://appshunter.io/developer/1390701956) |

## What reviewers say

### UOL Mail Pro

[App page](https://appshunter.io/ios/app/uol-mail-pro/id1372865834)

Manage your professional emails efficiently with this application. It offers a modern interface, supports various file types, and integrates with other services. Perform multiple operations, undo actions, and manage contacts seamlessly.

**Highlights:** Modern and intelligent interface, Supports any file type, Integration with apps and services, Send emails to phone contacts, Multi-email operations, Undo operations, Swipe to delete emails

**In-app purchases:** none


### Web PKI

[App page](https://appshunter.io/ios/app/web-pki/id1390701957)

Perform digital signatures using certificates from your mobile device on compatible websites and applications. Securely authenticate documents and transactions on the go.

**Highlights:** Digital signatures with mobile certificates, Compatibility with websites, Compatibility with applications, Secure authentication

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UOL Mail Pro free?

UOL Mail Pro is free to download, with no in-app purchases.

### Is Web PKI free?

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

### Which has better reviews, UOL Mail Pro or Web PKI?

UOL Mail Pro is rated higher. UOL Mail Pro averages 3.5 out of 5 from 31 ratings, while Web PKI averages 1.0 from 4 ratings.

### Do UOL Mail Pro or Web PKI have ads?

Neither UOL Mail Pro nor Web PKI shows ads.

### Which is updated more often, UOL Mail Pro or Web PKI?

UOL Mail Pro ships an update every 3 weeks, and Web PKI every 3 months. Most recently, UOL Mail Pro was updated on October 24, 2026 and Web PKI on October 24, 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.*