# e vs Syn

The clearest difference is review sentiment: Syn at 69% against e's 8%. Syn also leads on rating (5.0 vs 3.0). e's advantage is ratings volume (49 vs 1) and update cadence (every 8 days vs every 2 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.

Syn holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: e has 49 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 8% of e's written reviews are positive against 69% of Syn's.

e ships an update every 8 days, Syn every 2 weeks. Both last shipped on October 16, 2026.

## The numbers

| Metric | e | Syn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (49 ratings)](https://appshunter.io/ios/app/e-notariado/id1435236119/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/syn/id6461774561/reviews)** |
| Number of ratings | **49** | 1 |
| Positive reviews | 8.2% of reviews | **69.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 77 MB | 43 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | +4 |
| Developer | [Colegio Notarial do Brasil](https://appshunter.io/developer/1435236118) | [Syngular ID](https://appshunter.io/developer/1702701596) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-notariado/id1435236119)

Manage notarized digital certificates and electronically sign notarial acts directly from your device or computer. Contact a Notary Public to obtain your certificate and request various electronic notarial documents.

**Highlights:** Manage digital certificates, Sign electronic notarial acts, Request electronic deeds, Request electronic powers of attorney, Request electronic wills, Request electronic notarial minutes

**Features:** macOS Compatibility, Apple Wallet, 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 e free?

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

### Is Syn free?

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

### Which has better reviews, e or Syn?

Syn is rated higher. e averages 3.0 out of 5 from 49 ratings, while Syn averages 5.0 from 1 ratings.

### Do e or Syn have ads?

Neither e nor Syn shows ads.

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

e ships an update every 8 days, and Syn every 2 weeks. Most recently, e was updated on October 16, 2026 and Syn on October 16, 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.*