Singapore Rail 2021.2.4 is now available on the Mac App Store. It fixes a crash that could occur when trying to view disruption details of an incident that had already been resolved.
The iOS patch is delayed because it contains an in-app purchase that includes alternative icons. I am not at a stage where I am willing to remove that in-app purchase. Why? Search the App Store for “App Icons” and you’ll see a plethora of apps whose business model revolves around selling alternative app icons.
Update 2021-03-31: The iOS patch is out now.