# Syn vs UnderChat v2

The clearest difference is update cadence: Syn at fortnightly against UnderChat v2's every 2 months. 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.

Syn ships an update fortnightly, UnderChat v2 every 2 months. The most recent releases landed on September 30, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Syn | UnderChat v2 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | — |
| Size | 43 MB | 82 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Syngular ID](https://appshunter.io/developer/1702701596) | [Natan Borba](https://appshunter.io/developer/1701921130) |

## What reviewers say

### 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


### UnderChat v2

[App page](https://appshunter.io/ios/app/underchat-v2/id6760209894)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Syn free?

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

### Is UnderChat v2 free?

UnderChat v2 is free to download, with no in-app purchases.

### Do Syn or UnderChat v2 have ads?

Neither Syn nor UnderChat v2 shows ads.

### Which is updated more often, Syn or UnderChat v2?

Syn ships an update fortnightly, and UnderChat v2 every 2 months. Most recently, Syn was updated on September 30, 2026 and UnderChat v2 on September 20, 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.*