# Fax – SCHWENKE SYSTEMS — Fax via FRITZ!Box & SIP

> Fax via FRITZ!Box & SIP (iPhone/iPad app by Norbert Schwenke.)

- Source: https://appshunter.io/ios/app/fax-schwenke-systems/id6796838182 (this page in markdown: same URL + `.md`)
- Developer: [Norbert Schwenke](https://appshunter.io/developer/6796838185)
- Category: Business, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 9 MB
- Languages: American English, German (Germany)
- Released: 2026-08-13
- Data updated: 2026-10-11

## What is Fax?

Fax – SCHWENKE SYSTEMS turns iPhone and iPad into a versatile fax solution using your own FRITZ!Box or SIP connection.

Features:
• Fax transmission through a compatible FRITZ!Box or configured SIP connection
• Multiple fax profiles for private and business use
• Separate connection, line and sender details for each profile
• Single- and multi-page fax transmission
• Compose multi-page messages directly in the app
• Send PDFs, documents, images and scans
• Select recipients from Contacts
• Mailbox for sent and received faxes
• PDF transmission, error and cancellation reports
• Fax reception and archiving through a selected FRITZ!NAS folder
• Use through WireGuard/VPN in a suitably configured environment

Try it for free:
The free version can transmit real faxes. Transmitted pages include a visible watermark.

Full version:
The full version is available as a one-time in-app purchase. No regular subscription is offered to new users. Existing subscriptions remain valid under the implemented legacy entitlement. Purchases can be restored through the Apple ID.

Requirements:
A compatible, configured FRITZ!Box or a suitable SIP connection. Connection or transmission charges may apply depending on your phone contract or SIP provider. Credentials are stored in the iOS Keychain.

FRITZ!Box, FRITZ! and FRITZ!OS are trademarks of FRITZ! GmbH. Fax – SCHWENKE SYSTEMS is an independent product and is not affiliated with FRITZ! GmbH.

Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Is Fax safe?

Not enough ratings yet to assess Fax.

## Is Fax legit?

Fax – SCHWENKE SYSTEMS appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Fax is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.2.1 — 2026-09-26

Improved fax transmission via FRITZ!Box and SIP. Multi-page faxes and image attachments are now transmitted more reliably. Status and error handling, minor visual details, and stability have also been improved.

### 1.2 — 2026-09-23

New in version 1.2: multiple fax profiles for private and business use, SIP support in addition to FRITZ!Box, a revised fax workflow and multi-page messages composed directly in the app. Usability has also been improved, together with the new Fax – SCHWENKE SYSTEMS identity.

### 1.1.1 — 2026-09-10

Optimizations and minor improvements for even more reliable use of BoxFax.

### 1.1 — 2026-09-07

• Improved stability and performance
• Optimized fax preparation and PDF preview
• Improvements for FRITZ!NAS and fax management
• Refined guidance and bug fixes

### 1.0 — 2026-08-13

No release notes.

## Apps similar to Fax

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PC-FAX.com Center](https://appshunter.io/ios/app/pc-faxcom-center/id356818744) | 4.3 (7) | Free | Business |
| [Kiosk+](https://appshunter.io/ios/app/kiosk-plus/id1239509744) | 4.5 (197) | $29.99 | Business |

## More apps by Norbert Schwenke

- [Paper Rush](https://appshunter.io/ios/app/paper-rush/id6797068824)
- [WORTIVA](https://appshunter.io/ios/app/wortiva/id6802370100)

All apps by Norbert Schwenke: https://appshunter.io/developer/6796838185

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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 2026-10-11.*