If there’s enough alcohol in it, that will keep bacteria etc out, so it’s probably safe to drink. But ageing happens inside a wooden barrel or something like that. Inside of a opened bottle, it can lose or change flavor over time. But I’m not sure if that’s the case here. It’ll take some years. And there is a wide variety of tastes in whiskey, so maybe you tasted a different sort of whiskey? Or it really went bad… I’ve never had “Crown Royal”. Maybe let someone taste who knows how it’s supposed to taste.
Some good answers here. Also developers regularly add or update translations, support new features your phone doesn’t even have, compatibility with a different smartwatch, or regular bugfixes that only trigger in special circumstances and just for some users… All of that is difficult to notice for the regular user. Unless you buy the latest smartwatch an try to operate the app with it, or set your phone to Arabic.
And then there are maintenance tasks that don’t add any (visible) features. And apps are generally part of some more infrastructure at the respective company. Internal changes in their workflow or related software might change things. Or they decide to prepare something for the future or make it more efficient.
Sometimes they just update the year in the copyright notice. Or they re-build the app with the latest versions of the libraries that are supplied by different companies or open source projects. Those regularly change, fix bugs and generally you don’t want to depend on any old software library versions with known bugs and vulnerabilities. So there are a lot if reasons why software gets updated without visible changes.