Android
Download Secure Envelope
Explore available Android and desktop artifacts. Downloads are protected and require sign-in plus an active Pro subscription.
Create an account or sign in, then upgrade to Pro to download artifacts.
After sign-in, download attempts will guide you to upgrade if your account is not Pro.
Installation
- Not on Google Play—download directly from this site.
- Enable "Install unknown apps" for your browser (Settings → Security).
- APKs are signed and verified before download.