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The phone apps · Android, and iPhone soon

Your office extension, in your pocket

The BitVoice app makes a mobile phone one of an extension's phones. Calls ring on the phone's own call screen, and everything a desk phone does is there: transfer, hold, a second call, voicemail you can read, the team at a glance, staff chat and video rooms.

Get the app How pairing works

Free, like BitVoice. No account to make, no password to type: your administrator shows a code and you scan it. No advertising, analytics or tracking (privacy).

Three phones running BitVoice: a live transcript of a call, an incoming call from Sam Okafor with Answer and Decline, and a video room with three people.
RingsOn the phone's call screen, even with the app closed
EncryptedCalls between the phone and BitVoice (SRTP over DTLS)
MOS 4.4Measured on a Pixel 8 over Wi-Fi, no packets lost
$0No per-user fee, no app subscription

Every screen, from a real phone

A desk phone, and more

These are screenshots from a Google Pixel 8 running the release build of the Android app, connected to BitVoice on a cloud server. The business, people, calls and messages are invented.

An incoming call from Sam Okafor, extension 101, with Answer and Decline on Android's call notification, and the caller's history: four calls in 90 days.
Rings like a phone callAndroid's own call screen, with who is calling and how often they have.
A call in progress with a live transcript: Sam Okafor says the client approved the new lobby design and asks to send the final drawings on Friday.
A live transcriptWhat the caller says, written down as they speak, by speech to text on your own BitVoice.
Two voicemails, from Priya Nair and Lee Chen, each with its transcript, a call-back button, a delete button and a player.
Voicemail you can readEvery message transcribed. Play it, call back or delete it in one tap.
The Team tab: Sam Okafor and Marco Ruiz on a call, Lee Chen and Priya Nair free, the Front desk not connected, each with a call button.
The team at a glanceWho is free, ringing, on a call or away, before you ring them.
The Studio chat room: messages from Priya Nair, Marco Ruiz, Sam Okafor and Lee Chen about lobby samples and a courier, and Dana's own reply.
Staff chatDirect messages and team rooms, with a notification when a message arrives.
The Weekly standup video room with three cameras: Lee Chen large, Priya Nair and Marco Ruiz small.
Video roomsEveryone's camera, one tap from the phone, shown as a video call on the call screen.
The video room picker: Weekly standup with three people in it, Client review with a PIN, and Design crit.
Pick a roomThe rooms you can join, with how many are in each now.
Recent calls: missed calls from Priya Nair and Lee Chen in red, answered calls from Sam Okafor in green.
RecentsCalls in, out and missed. Tap one to call back.
The keypad for extension 100, Dana Reyes, with Call, Contacts and Join a video room.
Your office number, anywhereCall extensions and outside numbers with your office caller ID.

How it rings

Woken for calls, then straight to BitVoice

When a call comes in, BitVoice sends a push (Firebase on Android, Apple's VoIP push on iPhone) that carries only the call's ID, who is calling and your BitVoice's address. The phone shows the call on its own call screen and connects to your BitVoice for the sound. Ring groups and queues ring the app together with the extension's other phones. The Android app released today has no push yet: it rings while it is running, in the background too, and is not woken once Android closes it.

  • Answer from the lock screen or a Bluetooth headset
  • Calls you make go on the phone's call system too (Telecom, CallKit), so Bluetooth and the phone know of them
  • Hold shows on the phone's call system, and on iPhone it works from the call screen too
  • Calls keep going with the screen off or another app open
  • Moving from Wi-Fi to mobile data keeps the call (ICE restart)
Two phones: an incoming call from Sam Okafor with Answer and Decline, and the Team tab showing who is free and who is on a call.

Android

Google Play

The app is going through Google's review now. Until it is listed, the signed app is attached to each BitVoice release.

  • Android 10 and later
  • Tested on a Pixel 8 (Android 16) and a Pixel 11 (Android 17)

iPhone

App Store, soon

The iPhone app (CallKit, Apple's VoIP push) is built and ready for the App Store. It has not been run on an iPhone yet: that, and the App Store listing, come next.

  • iOS 16 and later
  • The same screens as Android

Your administrator

Pair a phone

Open the extension in BitVoice, press Add a phone, and the person scans the code with the app. Unpair a lost phone from the same page and it stops ringing at once.

The manual's chapter

Run BitVoice, then pair your phone

The apps talk only to your organisation's BitVoice. Download it, follow the wizard, and add a phone to an extension.

Download v0.1.15 Try the demo