EXTRA SAFE: Self‑Custody Chat

What is EXTRA SAFE?

EXTRA SAFE is a messaging app that lets you talk to friends while keeping your digital assets under your own control. The app merges a standard chat experience with a self‑custodial wallet, so you can send and receive cryptocurrencies without leaving the conversation.

Main features

• Encrypted messaging: All chats, files, images and voice notes are protected with end‑to‑end encryption. Keys are generated on your device and never leave it.
• In‑chat crypto transfers: You can attach supported digital currencies such as USDT and Ethereum directly to a message and send them instantly, just like sharing a photo.
• Non‑custodial wallet: The wallet is created locally; private keys stay on your phone. A 12‑word recovery phrase lets you restore access if you change devices.
• Device‑to‑device calls: Voice calls are routed directly between devices, avoiding third‑party servers. Group calls for up to five participants are supported.
• Self‑destruct timers: Set a lifespan for messages, ranging from one minute to one month, after which the content is removed from both devices.

How it works

When you first open the app, you choose a simple name that becomes your unique identifier. The wallet is set up automatically; the app generates a private key and shows you the recovery phrase. To send crypto, open a chat, tap the attachment icon, select the currency, enter the amount and confirm. The transaction is processed on‑chain while the chat interface remains unchanged.

Practical uses

• Pay friends instantly for shared expenses without switching apps.
• Discuss sensitive topics knowing that messages disappear after a set time.
• Manage a personal crypto portfolio while staying in touch with contacts.

Installation information

The app is distributed as a free download from the Google Play Store. It requires a compatible Android device; specific version requirements are not listed, so the Play Store will indicate whether your device can install it.

Who may find it useful?

Anyone who wants a single app for private messaging and basic crypto transactions—students, freelancers, small groups, or anyone exploring digital currencies—will benefit from the combined functionality.

Things to know before installing

• All private keys are stored only on your device; losing the recovery phrase means losing access to any funds.
• The current supported assets are USDT and Ethereum; additional tokens may be added in future updates.
• Because calls are device‑to‑device, both parties need the app installed for the best experience.