Up to three buttons on the card, repeated in the player. Which of them you get depends on what the card actually holds — see section 3: a YouTube card offers none of them, a silent clip offers no music, an audio card offers no video.
⬇ Download video. Hands over the exact file on disk, unmodified. No transcode at save time. The filename is the clip title, stripped to letters, digits, Cyrillic, spaces and hyphens, and capped at 60 characters.
⚠️ It is always named .mp4, even in the rare case where the container is really .mov or .mkv (possible when a clip arrived via gallery-dl).
♪ Download music. The first time, ffmpeg extracts the audio to 192 kbps MP3; after that it is served from cache. ⚠️ That mp3 stays in the media folder forever and is never cleaned up; it inflates the library and rides along in every full backup.
⧉ Copy link. Puts the original URL on the clipboard.
⬇ Download image. Photo posts, saves the first image.
Where the file lands
Every one of these buttons is an ordinary link pointing at ReelPile's own local server. The app never puts up a save panel of its own, so the file is written wherever your Mac already saves downloads.
What is not there
There is no drag into a video editor. Not Premiere, not Resolve, not Finder. No drag-out of any kind is implemented. A file leaves the app only through the download button.
There is no PNG export of the board. It existed and was removed.
Something here wrong, or something missing? Tell us — the manual is corrected against the app, not the other way round.