# Web PKI vs Syn

The clearest difference is review sentiment: Syn at 75% against Web PKI's 30%. Syn also leads on update cadence (fortnightly vs every 2 months). Web PKI's advantage is iOS requirement (8.2 vs 15.1). 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.

Web PKI ships an update every 2 months, Syn fortnightly. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Web PKI | Syn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (4 ratings)](https://appshunter.io/ios/app/web-pki/id1390701957/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 30.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 98 MB | 43 MB |
| Requires iOS | **8.2** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lacuna Software](https://appshunter.io/developer/1390701956) | [Syngular ID](https://appshunter.io/developer/1702701596) |

## What reviewers say

### 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


### Syn

[App page](https://appshunter.io/ios/app/syn/id6461774561)

This app provides secure control over your cloud-based digital certificate. It ensures that only authorized operations, confirmed by your PIN, can be performed with your certificate. You can also use it to audit your account for security and authorized operations.

**Highlights:** Cloud digital certificate management, Exclusive control via mobile app, PIN-based authorization, Security audits, High-security storage (HSM), Operation divergence cancellation

**In-app purchases:** none


## Frequently asked questions

### Is Web PKI free?

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

### Is Syn free?

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

### Do Web PKI or Syn have ads?

Neither Web PKI nor Syn shows ads.

### Which is updated more often, Web PKI or Syn?

Web PKI ships an update every 2 months, and Syn fortnightly. Most recently, Web PKI was updated on October 8, 2026 and Syn on September 30, 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.*