Desktop software and this website
Leonflix's publisher page lists Beta 0.7.0 for Windows, Mac, Linux and Raspberry Pi. Open the publisher's package information when you specifically need that software. The catalog you are using here is a separate browser experience. Searching, Bookmarks and title details do not require a desktop installation.
Windows and Mac
Match an application's stated operating system and architecture to your computer. A search result mentioning Windows 7, Windows 10 or an old Mac release does not test the package on your current setup. If an existing installation fails, note whether it cannot open at all or opens but cannot find a source. Those symptoms lead to different questions.
Before replacing an application, preserve any list or preference information you still need. A web bookmark backup cannot automatically import an unrelated desktop data format. Do not remove folders merely because an old forum comment describes doing so for a different version.
Linux and ARM devices
The publisher lists AppImage packages for Linux and an ARM package separately. Architecture is not a cosmetic filename difference. Confirm the package and device rather than assuming a Raspberry Pi download fits an ordinary desktop or vice versa. This website does not run or validate those installers for you.
Version numbers in search results
Older Leonflix guides describe releases such as 0.4.7. Use the number to place an instruction in context, not as evidence that the article is a current update notice. The development community archive contains historical announcements. We do not infer a new release simply because a download listing was recently crawled.
If choosing a movie is your priority, continue in the browser catalog. You can investigate desktop software separately without interrupting your shortlist.