# VoIP Office Pro vs Krestium

The clearest difference is device support: VoIP Office Pro at 3 against Krestium's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

VoIP Office Pro ships an update every 3 months, Krestium every 2 months. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | VoIP Office Pro | Krestium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/voip-office-pro/id6569235303/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 109 MB | 38 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [voipoffice](https://appshunter.io/developer/1102533223) | [NAGA VENKATA KRISHNA KISHORE PERI](https://appshunter.io/developer/1891452048) |

## What reviewers say

### VoIP Office Pro

[App page](https://appshunter.io/ios/app/voip-office-pro/id6569235303)

This business communication app simplifies and enhances workplace interactions. It allows users to make and receive calls, chat, share files, manage voicemail, and organize meetings, all from their mobile devices.

**Highlights:** Make and receive calls, Chat and share files, Manage voicemail, Organize meetings, Send and receive SMS, Use with Bluetooth headset

**Features:** Siri integration, Vision Pro support

**In-app purchases:** none


### Krestium

[App page](https://appshunter.io/ios/app/krestium/id6788606235)

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

**In-app purchases:** none


## Frequently asked questions

### Is VoIP Office Pro free?

VoIP Office Pro is free to download, with no in-app purchases.

### Is Krestium free?

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

### Do VoIP Office Pro or Krestium have ads?

Neither VoIP Office Pro nor Krestium shows ads.

### Which is updated more often, VoIP Office Pro or Krestium?

VoIP Office Pro ships an update every 3 months, and Krestium every 2 months. Most recently, VoIP Office Pro was updated on October 30, 2026 and Krestium on October 31, 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.*