# Nuxfon — SIP phone for your own PBX

> SIP phone for your own PBX (iPhone/iPad app by Team Nifty GmbH.)

- Source: https://appshunter.io/ios/app/nuxfon/id6817232227 (this page in markdown: same URL + `.md`)
- Developer: [Team Nifty GmbH](https://appshunter.io/developer/1322311525)
- Category: Business, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 52 MB
- Languages: American English, German (Germany)
- Released: 2026-10-23
- Data updated: 2026-11-05

## What is Nuxfon?

Nuxfon is a plain SIP telephone. It registers at a phone system you already have — your own PBX, your provider, a FRITZ!Box — and places and takes calls through it. There is no service of ours in between and no account with us.

What it does
• Registers over UDP, TCP, TLS or WebSocket, and finds the right one by itself
• Calls in G.711, and in G.722 for wideband sound where a line asks for it
• Hold, blind and attended transfer, DTMF, mute, speakerphone
• Several lines at once, each at its own phone system
• Messages to colleagues and to any number your phone system can reach
• Busy lamps for colleagues, so you can see who is on a call and pick up their extension
• Call history, contacts and the address book on the device

Ringing while the app is closed
A telephone that only rings while it is open is not a telephone. Nuxfon can be woken by your phone system and shows the call on the lock screen like any other call. That needs a small wake service on the phone system; without it, Nuxfon rings whenever it is running.

Your credentials stay on the device. What you type into the setup goes to your phone system and nowhere else.

An optional workspace can supply lines, contacts and chats for a company that runs one. That is an addition, not a requirement, and Nuxfon works fully without it.

## Is Nuxfon safe?

Not enough ratings yet to assess Nuxfon.

## Is Nuxfon legit?

Nuxfon appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Nuxfon is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.0.14 — 2026-11-03

The call list is grouped by day and shows the time of each call.
Contacts show the company under the name.
From the call list you can open the contact, or add a new one.
Various fixes and improvements.

### 1.0.13 — 2026-11-01

If a nuxpbx runs in your network, Nuxfon offers it right away during setup. All that is left is your extension and password.
Before Nuxfon first reads your contacts, it says what it needs them for. They stay on this device.
A paired workspace learns names from your contacts only when you switched that on.
Various fixes and improvements.

### 1.0.12 — 2026-11-01

No release notes.

## More apps by Team Nifty GmbH

- [TabRace - Citytour Kaufbeuren](https://appshunter.io/ios/app/tabrace-citytour-kaufbeuren/id1444887945)
- [Nuxbe](https://appshunter.io/ios/app/nuxbe/id6754884170)
- [Mega Meal](https://appshunter.io/ios/app/mega-meal/id6758919330)
- [Nuxbe PoS](https://appshunter.io/ios/app/nuxbe-pos/id6758986737)
- [nuxbe Pick & Pack](https://appshunter.io/ios/app/nuxbe-pick-and-pack/id6821931135)

All apps by Team Nifty GmbH: https://appshunter.io/developer/1322311525

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-05.*