The 3.3.0 version of nRF Connect is provided as a free download on our website. This free program was originally produced by Nordic Semiconductor ASA. Our built-in antivirus checked this download and rated it as virus free. The program lies within System Utilities, more precisely Device Assistants.
From the developer:
nRF Connect is a cross-platform tool that enables testing and development with Bluetooth low energy (previously called Bluetooth Smart). It allows easy setup of connections with other devices and use these connections for reading and writing to the external nodes. It is supported on Windows, Linux, and macOS, separate downloads for each platform.
You may want to check out more software, such as Backup-Connect PC backup, VPN Connector or Connected Coloring Book, which might be related to nRF Connect.