# Correios Empresas vs Syn

The clearest difference is review sentiment: Syn at 69% against Correios Empresas's 6%. Syn also leads on update cadence (every 2 weeks vs every 5 weeks). 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.

Correios Empresas ships an update every 5 weeks, Syn every 2 weeks. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Correios Empresas | Syn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/syn/id6461774561/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 5.6% of reviews | **69.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 50 MB | 43 MB |
| Requires iOS | 15.2 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | +4 |
| Developer | [ECT - Empresa Brasileira de Correios e Telegrafos](https://appshunter.io/developer/866480129) | [Syngular ID](https://appshunter.io/developer/1702701596) |

## What reviewers say

### Correios Empresas

[App page](https://appshunter.io/ios/app/correios-empresas/id1615430903)

This free app provides businesses with a unified platform for managing logistics and e-commerce operations. It offers features for contract management, financial tracking, pre-posting, shipment tracking, and price simulations.

**Highlights:** Contract management dashboard, Financial management of services, Pre-posting shipments, Object tracking, Delivery suspension, Price and deadline simulation, Collection scheduling

**Features:** macOS Compatibility, 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 Correios Empresas free?

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

### Is Syn free?

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

### Do Correios Empresas or Syn have ads?

Neither Correios Empresas nor Syn shows ads.

### Which is updated more often, Correios Empresas or Syn?

Correios Empresas ships an update every 5 weeks, and Syn every 2 weeks. Most recently, Correios Empresas was updated on October 9, 2026 and Syn on October 25, 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.*