Windows photo organiser
The local catalogue HEIC files join.
HEIC on Windows
Picca catalogues HEIC, HEIF and HIF stills next to JPEG, RAW and video. Files stay where you copied them from the phone. Tag and search them like everything else.
Windows codecs
Picca reads HEIC through Windows Imaging Component. If a file will not open, install HEIF Image Extensions from the Microsoft Store. Many iPhone stills also need HEVC Video Extensions (the free OEM version is fine).
Questions
Yes, from your folders. You may need HEIF Image Extensions, and often HEVC Video Extensions, from the Microsoft Store.
No. Files stay where they are. Picca does not import them into a proprietary library.
Yes. Common stills, Nikon/Canon/Fuji RAW, and types such as MP4, MOV and MKV share one catalogue.