github.com/sagernet/sing-box@v1.2.7/docs/installation/clients/sfi.md (about)

     1  # SFI
     2  
     3  Experimental iOS client for sing-box.
     4  
     5  #### Requirements
     6  
     7  * iOS 15.0+
     8  * macOS 12.0+ with Apple Silicon
     9  
    10  #### Download
    11  
    12  * [TestFlight](https://testflight.apple.com/join/c6ylui2j)
    13  
    14  #### Note
    15  
    16  * User Agent in remote profile request is `SFI/$version ($version_code; sing-box $sing_box_version)`
    17  * Crash logs is located in `Settings` -> `View Service Log`
    18  
    19  #### Privacy policy
    20  
    21  * SFI did not collect or share personal data.
    22  * The data generated by the software is always on your device.