Polski

Szept

private messenger · post‑quantum encryption
Android (version 0.9.82) · iPhone (beta)

📱 Android

⬇️ Download Szept (APK)

After installation, updates arrive automatically inside the app.

🍎 iPhone (beta)

🍎 Install via TestFlight
  1. Install the free TestFlight app from the App Store (if you don't have it).
  2. Open the link above on your iPhone — TestFlight shows Szept and an Accept button.
  3. Tap Install, then open Szept, enter your number and type the SMS code.

TestFlight is Apple's official testing channel — updates arrive the same way. Requires iOS 26 or newer.

Android — how to install (once)

  1. Tap ⬇️ Download Szept above and open the downloaded file.
  2. Android asks for permission to “install from this source” — allow it (one-time, per browser).
  3. If Google Play Protect: “unknown developer” appears — tap “More details” → “Install anyway”. This is normal for apps from outside the store.
  4. Open Szept, enter your phone number and type the 6‑digit SMS code.
The “unknown developer” warning only means the app doesn't come from the Play Store — not that it is harmful. Conversations are end‑to‑end encrypted; the server sees only ciphertext.