DUSphone
Encrypted calls via dus.net
Free · Designed for iPad. Not verified for macOS.
Make encrypted HD calls over your dus.net line - incoming calls ring natively, even when your iPhone is locked.
dus.net GmbH proudly presents DUSphone – the VoIP softphone for your dus.net line. Make encrypted, HD-quality calls straight from your iPhone: to landlines, mobile numbers, and other dus.net lines.
All you need is a dus.net plan – ready in minutes, including a starting balance of €0.45 for your first calls. See the plans at www.dus.net.
Your benefits:
• Encrypted calling over TLS and SRTP – your conversations stay private
• HD voice quality powered by the Opus codec
• Native call integration via Apple CallKit – calls appear on your lock screen and in your recents, just like regular calls
• Always reachable: incoming calls ring reliably, even when your iPhone is locked or the app is closed (VoIP push)
• Call landlines and mobile numbers – and receive calls on your dus.net number
• Fast setup by scanning a QR code from the customer center – no password to type
• Manage several lines at once (multi-account)
• Company directory and device contacts – callers are matched by name
• Keep an eye on your prepaid balance in euros at any time
• Show or hide your caller ID per call (call anonymously)
• In-call DTMF, hold, speaker, Bluetooth, and call history
Privacy-friendly: no tracking, no ads. DUSphone is built on open-source software (baresip); the open-source licenses can be viewed in the app.
Requirement: DUSphone needs a VoIP line at dus.net. More information at www.dus.net.
New: Transfer calls – blind (direct) or with consultation (attended transfer).
Also:
• Call waiting & second call: hold one call, answer the other, switch easily
• More reliable answering of incoming calls
• Contact lookup when transferring
• Bug fixes and refinements
The developer, dus.net GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- dus.net GmbH
- Size
- 11.2 MB
- Category
- Business
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 23 more
- English, Bulgarian, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, German, Greek, Hungarian, Irish, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovenian, Spanish, Swedish
- Age Rating
4+
- 4+
- Copyright
- © 2004-2026 dus.net GmbH