# Book Fair vs Syn

The clearest difference is update cadence: Syn at every 2 weeks against Book Fair's every 2 months. Book Fair's advantage is iOS requirement (10.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Book Fair ships an update every 2 months, Syn every 2 weeks. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Book Fair | Syn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/syn/id6461774561/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 69.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 24 MB | 43 MB |
| Requires iOS | **10.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Tecnospeed Tecnologia de Informacao Ltda](https://appshunter.io/developer/1389944712) | [Syngular ID](https://appshunter.io/developer/1702701596) |

## What reviewers say

### Book Fair

[App page](https://appshunter.io/ios/app/book-fair-gestao/id1521889932)

**Features:** macOS Compatibility

**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 Book Fair free?

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

### Is Syn free?

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

### Do Book Fair or Syn have ads?

Neither Book Fair nor Syn shows ads.

### Which is updated more often, Book Fair or Syn?

Book Fair ships an update every 2 months, and Syn every 2 weeks. Most recently, Book Fair was updated on October 27, 2026 and Syn on October 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.*