I use Backloggery which is more aimed towards playing the games you have and clearing your backlog. Source: 11 months ago

I havent used all these, so your milage may vary, but I was looking for a similar thing not long ago. Https://www.backloggd.com Https://rawg.io Https://wetheplayers.com Https://www.grouvee.com/ Https://gamelib.app/explore Https://backloggery.com/ Https://playnite.link/ There's also just using a spreadsheet, or Notion with a good template. Source: about 1 year ago

There are websites like howlongtobeat.com or backloggery.com that let you track individual game status. You can write down ratings or when you started/finished a game and it tracks that. I've used backloggery.com for 10+ years so it was really easy to grab the dates I played Trails with it. Source: about 1 year ago

For game tracking, try The Backloggery! Source: over 1 year ago

People often use sites like HowLongToBeat, Backloggery, or Backloggd. Source: over 1 year ago

Anything you put elsewhere is not more secure, unless you are more secure than Apple's servers, which seems highly unlikely. If you don't have it, it can't get compromised. The user has an iCloud account, you can write to iCloud storage without making them "sign in" to your app. It's their data, they can find it in the folder for your app in their iCloud drive on a Mac. And see... - Source: Hacker News / 12 days ago

Why do you need them to have an account? What on your roadmap requires it? And perhaps you could leverage Game Center accounts for "play" data, which leverages Apple's sensitivity to provide privacy while allowing achievements, multiplayer, and turn-based games, between partners. https://developer.apple.com/game-center/. - Source: Hacker News / 12 days ago

u/JTostitos is right though that Game Center was designed for this although it has gone out of style with many game studios lately. But it all depends on how the game is designed... If you require constant client-server communications then implementing Game Center doesn't really make sense when you can easily roll your own leaderboard on the server. Source: almost 2 years ago