Built for the AI era · Made in NL
Stop AI voice scams before they reach you.
Deepfake voices can be created in seconds and scam scripts generated at scale. Calmido shows you who's actually calling - using public business data, your own contacts, and an active community that flags scams as they happen. Calling with the handshake.
Matteo Restaurant Rotterdam
Mario Andretti
The threat
The scams are getting smarter.
So is the network defending you.
AI can clone any voice in seconds. Here's what that means the next time your phone rings.
01 · Voice cloning
Cloned voices.
A two-second audio sample is enough. Your child's voice, your boss's voice - the scammer has both.
02 · Generated scripts
Generated scripts, voiced by AI.
Written in your dialect, aimed at your job, based on your LinkedIn.
03 · Mass dialling
Mass dialling.
One scammer now calls thousands per hour. The old defences can't scale with the attack.
Introducing Calmido
We make calling safe again.
Calling with the handshake.
Calmido is a Dutch company on a simple mission: bring trust back to the phone. European-first. Privacy by design. We don't sell your data, we don't track you, and we don't hand over the verification layer to Big Tech.
How it works. Two phones meet on a call. Before you pick up, the handshake - a digital authentication protocol on top of the existing phone networks - quietly verifies who's on the other end. The number, the identity, the attestations behind it. Fully backwards-compatible.
Your identity, your rules. Lock your account. Approve who can see you. If your phone is stolen, callers see a warning instead of your name.
Why we differ
Three things Big Tech can't give you.
Phone-by-Google built a digital handshake too. Theirs lives inside Phone-by-Google. Ours is open, cross-platform, and isn't ours to corrupt.
01
Community
Together against Big Tech. European-first. Built with the people we protect.
Big Tech defends you by getting bigger. We defend you by getting more of us. Every Calmido user is a sensor — your report protects the next person to be called.
02
Caller intelligence in realtime
Public data. Community reports. TARIDE attestations.
Caller intelligence isn't one signal — it's all of them, combined. Public business data, your own contacts, opt-in identities and live community reports. The result lives on your call screen before you pick up.
03
Cross device. Cross platform.
iOS, Android, Web. Keep your phone app — we work on top.
Calmido runs in screening mode on iOS and Android — the handshake quietly does its work in the background. Prefer the full Calmido app on Android? Go all in. Just want to look up a number on the web? The Directory is open to everyone.
Three pillars
One system, built on your side.
Community reports. Consent-first verification. An independent foundation. Together they replace the voice-based defences that no longer work.
01
Know who to trust
The community reports. Calmido warns you instantly.
When a number has been flagged - for scam, phishing, a callback trick, a silent call - you see it before you pick up. The faster a number gets reported, the faster everyone is protected.
02
See who's actually calling
Public data. Your contacts. Names only with consent.
Calmido Phone shows what's safe to show: company names from public business data, people already in your contacts, and registered users who've chosen to be visible. A private individual's name is never shown without their explicit consent.
03
Built on your side
Free. Your data stays with you. Independent verification.
Calmido Phone is free. Your contacts never leave your phone. The verification protocol behind Calmido is governed by TARIDE - an independent foundation Calmido doesn't control. Built in the Netherlands.
- Hosted in EuropeFounded in Amsterdam · Built and run from the EU · KVK 96388455
- Latest industry standardsPost-Quantum ready · No passwords · Full passkey support
- Powered by open protocolsGoverned by the independent TARIDE foundation
- No PII leaves your phoneNothing uploaded · Nothing sold · Free forever
Get Calmido Phone
Know who's calling
before you answer.
Free. No ads. No account required to receive calls and see warnings. Available on iOS and Android.
Calmido Phone for Android
Also available as your full phone app. No registration needed.
Get it on Google Play
Calmido Phone for iPhone
Screens incoming calls. Keeps you in control.
Download on the App StoreNot ready to install?
Try a phone number in the Calmido Directory - web-based, no account needed to search.