iOS & Android

Lubb Softphone

Your phone system, in your customers' pockets. The complete iOS and Android calling app — sign-in provisioning, full in-call controls, push and in-app top-ups. Licensed once, published under your own brand, on your own developer accounts.
A Real Calling App

A Real Calling App

Dialer, contacts, favourites, call history and full in-call controls — the app your customers actually make calls on, not a demo.
Your Brand, Your Stores

Your Brand, Your Stores

Swap the name, bundle ID, icon and palette, publish under your own Apple and Google developer accounts.
Calling Engine Included

Calling Engine Included

The commercial SIP engine licence for your own build is arranged and included in the fee — nothing else to buy.
Own It Outright

Own It Outright

One licence fee, once. No per-seat fee to us, no monthly platform charge, ever.

Everything a calling app needs, already built

Not a starter template — every one of these is in the source you receive, running today against a live phone system.
Zero-touch provisioningA user signs in and the app pulls their extension, password, SIP server and caller ID straight from your platform. Nobody types a SIP setting, ever.
QR-code sign-inScan a code to hand an extension to a phone in seconds — the fastest way to onboard a team that has never seen a softphone.
Full in-call controlsHold, mute, speaker, call transfer with its own keypad, DTMF tones, and proximity blanking so a cheek never ends a call.
Contacts, favourites & historyThe phone’s own address book with multi-number contacts, a favourites tab, and a searchable inbound / outbound / missed call log.
Push, even when closedIncoming calls arrive as push notifications with a ringtone, registered against your own phone system — the app doesn’t have to be open.
Forwarding & call blockingForward-all, forward-on-busy and forward-on-no-answer, plus a blocked-numbers list, all driven from the user’s own account.
In-app top-upsBuy airtime inside the app through both stores’ in-app purchase rails, with a PayFast web checkout path alongside for card payments.
Sign-up & OTP verificationSelf-service registration with SMS one-time-pin verification and account cancellation — the whole lifecycle, not just the login screen.
Deep SIP settingsCodecs, DTMF mode, transport, STUN / ICE, keep-alive intervals, custom DNS and dial plans — everything a network engineer asks for on day two.
Zero-Touch Provisioning

From install to first call, without a single SIP setting

The reason a softphone rollout usually stalls is the setup screen — servers, ports, transports, passwords. This app doesn't have one. It asks your platform who the user is and configures itself.
01Sign in, or scanThe user enters their number, or scans a QR code you generate. An SMS one-time pin confirms it’s them.
02The extension arrivesYour platform answers with the extension, password, SIP server, caller ID and forwarding rules. The app registers itself.
03They’re on the phone systemTheir mobile is now an extension — same number, same routing, same call history as the desk phone they left behind.
Goes With

Need the phone system behind it too?

Lubb PBX — the multi-tenant platform this app was built against — is licensed the same way: source code, once-off, run it on your own infrastructure. Take both and you own the whole stack, switch to handset.
See Lubb PBX

Ready to own it?

Tell us how you plan to ship it — your own network, your own customers — and we'll walk you through the licence and get you the source.
Request This License