PRO SHIELD - Secure Messaging

PRO Shield (PROMIUM SHIELD) encrypts and decrypts text and files directly on your phone, using AES-256 military grade. No servers, no accounts, no connection: the app does not even declare Android's Internet permission, so it cannot send your data anywhere. Not even if it wanted to. ━━━━━━━━━━━━━━━━━━━━ WHAT YOU CAN DO ━━━━━━━━━━━━━━━━━━━━ ▸ TEXT Type or paste any text and tap once: plaintext gets encrypted, and text already encrypted by PRO Shield is recognised and decrypted automatically. The result is always copyable and shareable with any app (messaging, email, notes...). ▸ FILES AND MEDIA Encrypt any file — photos, videos, PDFs, documents, archives. The encrypted file gets the ".psh" extension (e.g. "photo.jpg.psh") and cannot be opened by any other app: only PRO Shield, with the same key, can restore it. You always choose where each result is saved. ▸ PASSWORD VAULT You don't type encryption keys every time: you save them in the vault like bookmarks, each with a name, a description and a colour ("Tax documents", "Private photos", "Work backup"). Pick the active key with one tap and recognise it at a glance. ▸ OPEN FILES DIRECTLY Tap a .psh file in your file manager, or use "Open with" and "Share" from any app: PRO Shield opens ready to decrypt it. ━━━━━━━━━━━━━━━━━━━━ HOW IT PROTECTS YOU ━━━━━━━━━━━━━━━━━━━━ • Encryption based on AES-256 and other NIST-recognised security standards, for maximum protection of your data • Master password never stored in plaintext, protected by the Android Keystore • Automatic session lock after 5 minutes of inactivity, plus instant manual lock • Password strength checked in real time during first setup: weak passwords are rejected • No clipboard monitoring: every operation starts from an explicit tap of yours ━━━━━━━━━━━━━━━━━━━━ PRIVACY, FOR REAL ━━━━━━━━━━━━━━━━━━━━ ✓ Zero data collection: the app collects, transmits and shares nothing ✓ No account, no sign-up, no email required ✓ No ads, no tracking, no analytics ✓ No Internet permission declared: anyone can verify it in the permissions list ✓ Your passwords and files never leave your device The only permission requested is for notifications (optional), used solely to confirm an operation if you enable it in settings. ━━━━━━━━━━━━━━━━━━━━ WHO IT IS FOR ━━━━━━━━━━━━━━━━━━━━ For anyone who has to send a bank account number, a password or a confidential document and does not want to leave it in plaintext inside a chat. For anyone keeping personal photos and documents on their phone who wants a real lock on them. For professionals, journalists, consultants, and for anyone who would rather their data stayed exactly where it is: on their own device. ━━━━━━━━━━━━━━━━━━━━ BEFORE YOU START ━━━━━━━━━━━━━━━━━━━━ ⚠ There is no recovery for the master password or the vault keys. That is the price of encryption nobody — including the developer — can bypass: with no backdoor, there is no "forgot my password" either. Keep your keys somewhere safe. ⚠ An encrypted file can only be recovered with the exact key used to encrypt it. If you delete that vault entry, files encrypted with it can no longer be decrypted. Available in English and Italian: the app follows your device language. Requires Android 8.0 or later. PRO Shield is developed by PROMIUM.