If you're on a Windows PC you can install this app and it works great, I used it last night. One of two ways. The easy way, which I do not prefer is installing BlueStacks and sideloading the APK.
https://apkcombo.com/blinds-are-up-poker-timer/com.blindsareup.app/download/apk
The other way, is installing the Android Subsystem and then sideloading the app
https://www.androidauthority.com/android-apps-on-windows-11-3048569/
If you're not super savvy just use BlueStacks and you'll be fine, I just don't like ads at the top and left side.