The Mobile App

GDPR-Compliant, Private by Design

Message and send files with confidence in the E2EE chats that self-destruct by default. Call privately with your anonymous EXTRA SAFE number over a direct P2P connection secured by on-device encryption keys.

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Feature Overview

Unique EXTRA SAFE Number

Your private, identity-free number for instant calling. Dial your contacts directly and connect securely wherever you are.

Encrypted Voice Calls

Crystal-clear, device-to-device calls. The call session is protected by a private-public key pair, similar to those used on the Ethereum network.

Encrypted Chat

Send E2EE messages and files (documents, images, etc.) that disappear after being viewed, based on the time you set.

Secure Video Meetings

Host or join private meetings with up to 5 participants – free and unlimited. Anyone can join your call via a link, even if they don’t have the app installed.

Contacts & Quick Dial

Save frequent contacts, call one person or an entire group with a tap, and reconnect instantly from your call history.

Encrypted File Transfer

Send files of any type, images, and videos up to 25 MB. File transfer is also E2EE, and everything you share will disappear on your timer.

Direct P2P Connection and Secure Call Flow With WebRTC

EXTRA SAFE connects participants directly through a peer-to-peer network, with WebRTC ensuring real-time video and audio transmission. In-call messages are protected by end-to-end encryption, and all chat content disappears automatically when the call ends. Your conversations remain fully private and secure.

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For mentions, please use our official hashtag: #EXTRASAFE

FAQs

Where can I download the EXTRA SAFE mobile app?
The EXTRA SAFE mobile app is available on both the App Store and Google Play. You get a unique EXTRA SAFE number, which is not linked to your mobile number or public accounts, enabling you to call and message freely.
Why should I download the EXTRA SAFE mobile app?
The EXTRA SAFE mobile app gives you a complete privacy-first calling experience on the go.

Unique EXTRA SAFE Number – your own private number for instant calling.

Encrypted Chats – send messages, images, and files that vanish after your chosen time, with end-to-end encryption.

Encrypted Voice Calls – crystal-clear calls over WiFi or cellular, secured with encryption keys similar to those used in the Ethereum network.

Secure Video Meetings – host or join P2P meetings with up to 5 participants, free and unlimited.

Contacts & Call History – save frequent contacts and redial in one tap, stored only on your device, sort and manage your contacts easily.
What makes EXTRA SAFE completely anonymous?
EXTRA SAFE is built on core GDPR principles. You get:
– An identity-free setup.
– Direct device-to-device communication (P2P).
– E2EE messages, files, and images with cryptographic keys generated locally on your devices. Just like key pairs work in the Ethereum network.
– No collection of user identities, metadata, or message history: storage is encrypted and temporary by default, following your timer.
How is EXTRA SAFE different from other calling apps?
EXTRA SAFE is built with two core principles: privacy and security.

Privacy (Anonymity) – you never provide a phone number, email, or personal details. Instead, you get a unique EXTRA SAFE Number. Nothing in the app links your activity to your real-world identity.

Security (Encryption) – the in-app and in-call chats are end-to-end encrypted, which means you can share any data you want in texts and files. The call sessions are protected by a key pair (similar to Ethereum’s cryptographic model), and the private key never leaves your device.

Enjoy secure video calls protected by locally generated cryptographic keys. Audio, video, and messages are transmitted directly between participants’ devices

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