IV Calculator for Pokémon Scarlet & Violet. Allows for you to work out your IVs for all Pokémon in the game
www.serebii.net
It's possible to select Alolan Geodude, Alolan Graveler, and Alolan Golem, but it shouldn't be. Of course, should these three Pokemon be made available in a Gen 9 game in the future, then that wouldn't be a problem once it happens.
IV Calculator for Pokémon Sword & Shield. Allows for you to work out your IVs for all Pokémon in the game
www.serebii.net
I mentioned before that no Pokemon that was absent from the base game of Sword/Shield is in the Sword/Shield IV Calculator, even if they were available in the DLC of Sword/Shield, and was told that it would be too difficult to fix this problem. Since then, of course, more Pokemon have been present in Gen 8 games, courtesy of BD/SP and Pokemon Legends Arceus. Since you now have entries for all of those Pokemon in either the Sun/Moon IV Calculator or the Scarlet/Violet IV Calculator, would it be possible to expand the Sword/Shield IV Calculator to include all Pokemon that are in any Gen 8 game? Then again, it might not work too well for Pokemon in Pokemon Legends: Arceus due to the way that game handles stats, but there's still Sword/Shield DLC and BD/SP to consider.