# CallOne Softphone vs PBXAPP

CallOne Softphone and PBXAPP are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CallOne Softphone ships an update every 3 months, PBXAPP every 2 months. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | CallOne Softphone | PBXAPP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 97 MB | 109 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [CallOne GmbH](https://appshunter.io/developer/1652646749) | [Outbox AG](https://appshunter.io/developer/1722630235) |

## What reviewers say

### CallOne Softphone

[App page](https://appshunter.io/ios/app/callone-softphone/id6444151385)

**In-app purchases:** none


### PBXAPP

[App page](https://appshunter.io/ios/app/pbxapp/id6474870851)

**In-app purchases:** none


## Frequently asked questions

### Is CallOne Softphone free?

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

### Is PBXAPP free?

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

### Do CallOne Softphone or PBXAPP have ads?

Neither CallOne Softphone nor PBXAPP shows ads.

### Which is updated more often, CallOne Softphone or PBXAPP?

CallOne Softphone ships an update every 3 months, and PBXAPP every 2 months. Most recently, CallOne Softphone was updated on September 21, 2026 and PBXAPP on September 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.*