# Vertex vPBX vs ITSVOIP Express

The clearest difference is update cadence: ITSVOIP Express at every 5 months against Vertex vPBX's every 23 months. ITSVOIP Express also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Vertex vPBX ships an update every 23 months, ITSVOIP Express every 5 months. The most recent releases landed on November 12, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Vertex vPBX | ITSVOIP Express |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 5 months** |
| Size | 84 MB | 72 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Vertex In Healthcare](https://appshunter.io/developer/1604804895) | [Infinity Tech Services, LLC](https://appshunter.io/developer/1852230771) |

## What reviewers say

### Vertex vPBX

[App page](https://appshunter.io/ios/app/vertex-vpbx/id1604804893)

**In-app purchases:** none


### ITSVOIP Express

[App page](https://appshunter.io/ios/app/itsvoip-express/id6755146288)

**Features:** Siri integration, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Vertex vPBX free?

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

### Is ITSVOIP Express free?

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

### Do Vertex vPBX or ITSVOIP Express have ads?

Neither Vertex vPBX nor ITSVOIP Express shows ads.

### Which is updated more often, Vertex vPBX or ITSVOIP Express?

Vertex vPBX ships an update every 23 months, and ITSVOIP Express every 5 months. Most recently, Vertex vPBX was updated on November 12, 2026 and ITSVOIP Express on November 9, 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.*