# QVR Pro Client vs Syn CallSO掂

The clearest difference is update cadence: Syn CallSO掂 at every 3 weeks against QVR Pro Client's every 3 months. Syn CallSO掂 also leads on iOS requirement (13.0 vs 15.0). 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.

QVR Pro Client ships an update every 3 months, Syn CallSO掂 every 3 weeks. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | QVR Pro Client | Syn CallSO掂 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (47 ratings)](https://appshunter.io/ios/app/qvr-pro-client/id1187877313/reviews)** | — |
| Number of ratings | **47** | — |
| Positive reviews | 34.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 117 MB | 35 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QNAP Systems, Inc.](https://appshunter.io/developer/355826923) | [Synergos Systems Company Limited](https://appshunter.io/developer/1777215731) |

## What reviewers say

### QVR Pro Client

[App page](https://appshunter.io/ios/app/qvr-pro-client/id1187877313)

Access and manage your IP cameras remotely. Monitor live feeds, review past recordings, and receive instant alerts from your server. Offers advanced control and event logging for comprehensive surveillance.

**Highlights:** View multiple IP cameras, Live and playback modes, Advanced monitoring options, Instant push notifications, Event log playback, E-map camera location display

**In-app purchases:** none


### Syn CallSO掂

[App page](https://appshunter.io/ios/app/syn-callso/id6761522425)

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

**In-app purchases:** none


## Frequently asked questions

### Is QVR Pro Client free?

QVR Pro Client is free to download, with no in-app purchases.

### Is Syn CallSO掂 free?

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

### Do QVR Pro Client or Syn CallSO掂 have ads?

Neither QVR Pro Client nor Syn CallSO掂 shows ads.

### Which is updated more often, QVR Pro Client or Syn CallSO掂?

QVR Pro Client ships an update every 3 months, and Syn CallSO掂 every 3 weeks. Most recently, QVR Pro Client was updated on October 7, 2026 and Syn CallSO掂 on October 13, 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.*