Since 2022, only as a PWA at https://www.pwasite.com/mffkv/ - can be installed on a phone or used in a browser, it also works offline.
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Karlovy Vary Film Festival program and film catalog. No need for an internet connection, with the possibility of marking projections.
August 17 - First shot
If you have friends affected by the absence of Android, they can use the HTML version: https://wendigo.online-siesta.com/mffkv2021.html
Or install the app from the web at https://www.pwasite.com/mffkv/, it should work on the iPhone as well.