Android · Coming to Google Play · $4.99 USD

Messaging,
Unified & Secure

NexusSMS is a feature-rich Android SMS/MMS app that fuses your text messages with Matrix, Telegram, Discord, Messenger, and more — wrapped in end-to-end encryption, on-device spam protection, and a deniable vault.

$4.99 USD · One-time purchase on Google Play

Explore Features

Highlights

Built for privacy. Built for power.

NexusSMS combines the messaging features you expect with security and automation you won't find in a stock messaging app.

End-to-End Encryption

AES-256-GCM message encryption with Signal-style X3DH + Double Ratchet, verifiable 30-digit safety numbers, and QR-based key verification.

Unified Inbox

Connect Matrix, Telegram, Discord, Facebook Messenger, Signal, and Slack. Every platform shows as a filterable tab — reply to all of them from one app.

Spam & Scam Protection

On-device detection across 10 scam categories — OTP phishing, bank impersonation, delivery scams, and more — with configurable auto-blocking.

Automation Rules

A Tasker-lite rules engine with 15 action types: auto-copy OTPs, auto-reply, auto-archive, forward to email, mute, block, and webhooks.

Encrypted Backups

Back up to Google Drive or your own WebDAV/Nextcloud server with PBKDF2 passphrase encryption. Scheduled, one-tap restore.

Deniable Vault

A second, hidden encrypted space with a decoy vault. Hide conversations from the main list and unlock them with your own PIN.

Messaging

Everyday messaging, done right

From scheduled texts to smart replies, the basics are anything but basic.

SMS / MMS + RCS — text, photos, video, and rich messaging with automatic SMS fallback.

Scheduled messages — send once or repeat daily, weekly, or monthly at any time.

Shortcodes — type !brb and it expands to “Be right back”. Unlimited custom triggers.

Signatures & templates — attach a signature per conversation and pick from a template library.

Smart reply — context-aware suggestion chips for fast replies.

GIFs, stickers & emoji — GIF picker, six sticker categories, and a searchable emoji library.

Reactions — long-press any message to react with an emoji.

Full-text search — search across every conversation and message, instantly.

Dual SIM support — choose which SIM card each message goes out on.

Archive, pin, mute & block — full conversation management, including per-contact notifications.

Group messaging — MMS group chats and bulk SMS modes with send-delay protection.

Message actions — copy, forward, lock/unlock, multi-select, and message detail view.

Security & Privacy

Your conversations stay yours

Encryption, a vault, and app-level protection keep prying eyes out — including the screen ones.

App lock — PIN, pattern, or password with biometric fallback and configurable auto-lock timeout.

E2E encrypted chats — per-contact AES-256-GCM with X3DH key agreement and Double Ratchet.

Safety numbers — verify contacts with a 30-digit fingerprint or in-person QR scan. Get warned if a key changes.

Deniable vault — a hidden encrypted space with a decoy PIN that shows an empty shell.

Screenshot blocking — optional FLAG_SECURE to keep conversations out of screenshots.

Content privacy — hide message previews from the recents app switcher.

Secure storage — keys in EncryptedSharedPreferences backed by the Android Keystore. No plaintext secrets.

Blocklist & spam report — block known senders and report spam straight from a message.

Tech Specs

Under the hood

Platform	Android 7.0+ (API 24+)
UI	Jetpack Compose · Material Design 3
Architecture	MVVM · Repository pattern
Tech stack	Kotlin · Room · Hilt · Coroutines · WorkManager · Retrofit/OkHttp
Messaging	SMS / MMS / RCS
Encryption	AES-256-GCM · X3DH + Double Ratchet · Android Keystore
Integrations	Matrix · Telegram · Discord · Facebook Messenger · Signal · Slack
Backups	Google Drive · WebDAV / Nextcloud · JSON / CSV export
Version	1.0.3 (Code 103)
Developer	Nexus Media · Canada

Messaging,Unified & Secure