iWFCam is the most direct and successful alternative for magnetic mini cameras and spy cams that use the Jxlcam network protocol.
If you already own Reolink cameras or are planning to buy them, the offers a polished, zero-configuration experience with excellent hardware integration. Jxlcam App Alternative
It is incredibly streamlined for viewing the camera via a direct local Wi-Fi connection (P2P). iWFCam is the most direct and successful alternative