# Reliable PBX vs VoxSun Ai

The clearest difference is update cadence: Reliable PBX at monthly against VoxSun Ai's every 3 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.

Reliable PBX ships an update monthly, VoxSun Ai every 3 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Reliable PBX | VoxSun Ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/reliable-pbx/id1556812928/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free | — |
| Size | 114 MB | 48 MB |
| Requires iOS | 18.0 | **17** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ReliablePBX](https://appshunter.io/developer/1556812930) | [VoxSun Telecom](https://appshunter.io/developer/419839555) |

## What reviewers say

### Reliable PBX

[App page](https://appshunter.io/ios/app/reliable-pbx/id1556812928)

Manage your business communications on the go with this mobile app. Place and receive calls, send SMS, and access voicemails from your dedicated business number. Features include call transfer, internal messaging, and contact management.

**Highlights:** Place and receive calls from business number, Send and receive SMS, Voicemail management, Call transfer, Internal messaging, Business contacts, User status indicator (BLF)

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

**In-app purchases:** none


### VoxSun Ai

[App page](https://appshunter.io/ios/app/voxsun-ai/id6747337078)

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

**In-app purchases:** none


## Frequently asked questions

### Is Reliable PBX free?

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

### Is VoxSun Ai free?

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

### Do Reliable PBX or VoxSun Ai have ads?

Neither Reliable PBX nor VoxSun Ai shows ads.

### Which is updated more often, Reliable PBX or VoxSun Ai?

Reliable PBX ships an update monthly, and VoxSun Ai every 3 months. Most recently, Reliable PBX was updated on November 7, 2026 and VoxSun Ai 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.*