Encrypted messages
Becomes your default SMS app. Incoming texts are sealed the moment they arrive and readable only after you unlock.
noscreeno encrypts your texts, files, and screen — locally, behind one key. No account. No server. No telemetry.
Set a key on first launch — it locks the app and encrypts everything inside. Nothing is shown until you unlock.
Becomes your default SMS app. Incoming texts are sealed the moment they arrive and readable only after you unlock.
Encrypt any text or file into a sealed .qev payload you can keep, copy, or share. AES-256-GCM.
Keep a private note encrypted on-device. It never leaves the phone and is unreadable without your key.
noscreeno opens locked. Everything stays hidden until you enter your key, and re-locks on demand or in the background.
Its own window can't be screenshotted or recorded, plus a touch-through visual mask against shoulder-surfing.
With root or device-owner, encrypt any file or folder by path and lock down the whole device. See below.
The encryption engine is open source. Here is exactly what protects your data.
AES-256-GCM — authenticated; altered data refuses to decrypt.PBKDF2-HMAC-SHA256, 310,000 iterations.RSA-2048 public key on arrival (works while locked); the private key is itself encrypted with your master key.INTERNET permission. Nothing can phone home.A normal app can only touch what you hand it. With root or device-owner, noscreeno does the real thing — on your own device, under your control.
On a rooted device, encrypt or decrypt any file or whole folder by path — no file-picker limits. noscreeno detects Magisk and AOSP su.
/sdcard/DCIM → encrypt path /sdcard/secret.txt → encrypt path
Provisioned as device owner, noscreeno controls the whole device: block screenshots system-wide, disable the camera, enforce lock policy.
adb shell dpm set-device-owner \ com.qevcrypt.app/.QevDeviceAdmin
Distributed directly, so you install it yourself. Android shows a couple of safety prompts for any app outside the Play Store — here's exactly what to tap.
If your browser warns "this type of file can harm your device," tap Download anyway — that appears for every .apk.
Tap the downloaded NOscreenNO.apk. If asked, allow Install unknown apps from your browser — one time.
If Play Protect appears, tap More details → Install anyway. It flags unknown developers, not actual malware.
Launch noscreeno, create a key you'll remember, and start encrypting.
Download blocked, or prefer the source? Get it directly from GitHub.