# MobileID vs Syn

The clearest difference is review sentiment: Syn at 75% against MobileID's 0%. Syn also leads on update cadence (fortnightly vs every 4 months). MobileID's advantage is iOS requirement (11.0 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.

MobileID ships an update every 4 months, Syn fortnightly. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | MobileID | Syn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.5 (15 ratings)](https://appshunter.io/ios/app/mobileid/id990783086/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 0.0% of reviews | **75.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 91 MB | 43 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Certisign](https://appshunter.io/developer/669158783) | [Syngular ID](https://appshunter.io/developer/1702701596) |

## What reviewers say

### MobileID

[App page](https://appshunter.io/ios/app/mobileid/id990783086)

Securely authenticate yourself and sign electronic documents with legal validity using your digital certificate on mobile devices. This service enables strong identification and document signing directly from your smartphone or tablet.

**Highlights:** Strong user authentication, Electronic document signing, Legal validity, Mobile device integration, ICP-Brasil digital certificate support

**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 MobileID free?

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

### Is Syn free?

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

### Do MobileID or Syn have ads?

Neither MobileID nor Syn shows ads.

### Which is updated more often, MobileID or Syn?

MobileID ships an update every 4 months, and Syn fortnightly. Most recently, MobileID was updated on October 6, 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.*