The dialer that knows who's calling
Zio Dialer replaces your stock phone app with T9 smart search, a caller-ID overlay powered by Sayzio profiles, quick call / SMS / WhatsApp channels and two-way Google Contacts sync — all in one beautiful, fast dialer.
Free download · Android 10+ · No ads in the dialer
Know who's calling before you say hello
When a customer calls, the difference between "Hello?" and "Hi Priya, how did the order work out?" is everything. Zio Dialer looks up the number against your Sayzio contacts and the wider Sayzio network the moment your phone rings, so the name, photo and context are on screen before you pick up.
It's a real replacement for your Android phone app — dial pad, call log, favourites — with your Sayzio address book behind it. Numbers that belong to Sayzio members resolve to their biolink automatically, so a phone number becomes a whole profile.
- Caller ID overlay works natively at ring time, even before the app opens
- T9 smart dialing searches names, businesses and handles as you type digits
- Calls stay on your carrier — Sayzio never routes or records your calls
Everything a dialer should have been
Fast on the basics, smart everywhere else.
T9 smart search
Type 5-4-5 and instantly match names, handles, biolinks — even people you follow on Sayzio. Toggle to a full keyboard any time.
Caller ID overlay
Incoming numbers resolve to full Sayzio profiles, so you see the name, photo and verified badge before you pick up.
Quick channels
Call, SMS or WhatsApp any contact from one row — the dialer remembers each person's preferred channel.
Google Contacts sync
Two-way, incremental sync with Google Contacts keeps your address book identical everywhere, automatically.
Universal finder
One search across contacts, people, your links, followed creators and workspaces — grouped and ranked.
Phone → biolink
Numbers silently attach to matching Sayzio pages, so a phone number becomes a full mini-website in your contacts.
Set up in under a minute
Install & set default
Download Zio Dialer and set it as your default phone app — Android asks with one tap.
Connect your accounts
Sign in with Sayzio and optionally link Google Contacts for automatic two-way sync.
Dial smarter
T9 search, caller ID and quick channels start working immediately — no configuration needed.
A phone app that works like you do
From the first digit to the follow-up message, everything stays connected to your Sayzio account.
Find anyone with a few taps
The universal finder searches your contacts, followed creators, your own links and Sayzio profiles at once — grouped results, T9 digits or full keyboard, your choice.
Rich caller cards at ring time
Incoming numbers resolve against your address book and the Sayzio network, so a bare number turns into a name, a photo and a biolink you can open right after the call.
Two-way Google Contacts sync
Link Google Contacts once and Zio Dialer keeps both address books in step automatically — edits on either side flow across in the background, roughly every half hour.
Privacy first: Zio Dialer only ever launches standard tel: and mailto: actions — your call log and messages never leave your device.
Zio Dialer, answered
Yes. The dialer, T9 search, caller ID and quick channels are free. Some Sayzio-side features (like advanced contact caps) follow your Sayzio plan.
Not yet — iOS doesn't allow full replacement dialers. iPhone users get the same contacts, universal finder and caller lookups inside the Sayzio mobile app.
You can dial and search contacts without one, but caller-ID profiles, phone-to-biolink matching and sync across devices need a free Sayzio account.
Lookups match the incoming number against your own contacts and public Sayzio profiles that listed that number. Nothing is uploaded from your call log.
Connect once and Zio Dialer syncs incrementally in both directions roughly every 30 minutes — edits on either side show up on the other.
Ready to upgrade your phone app?
Install Zio Dialer and every call starts with context.
