Many sites offering "HushSMS v2.4.1" package it with hidden malware or adware. Permissions:

Please note that downloading and installing APK files from third-party sources can pose security risks. We recommend downloading from reputable sources and exercising caution when installing APK files.

: Messages that appear directly on the recipient's screen as a popup rather than being saved in the inbox. Silent SMS

These messages appear directly on the recipient's main screen. They are not automatically saved in the inbox.

Better support for Android 9.0 through Android 12.