The taubman technique explores the practical aspects of piano playing from an "ergonomics first" set of principles and is highly recommend it if you can get any of Golandsky's videos. Unfortunately, it's one of those techniques that can be difficult to learn theoretically, and you may need a teacher to be able to guide you through the movements.
Literally the Hanon set of books will teach you this :)
But if you’re a hunt-and-peck for piano, I would recommend stop what you’re doing and go back to the very beginning and relearn everything properly so that you don’t have any bad habits.
As for other resources, this app looks like a good bet!
That reminds me there are people who type on the (computer) keyboard with two fingers, searching for each key and pecking at it. I was fortunate to have "blind typing" classes as a child, including a fun game where you type to shoot at words falling on a city. That skill has been really valuable over the years.
I wonder if there are similar concepts for learning to play on the piano keyboard, like "blind" playing to learn where the notes are without even looking; or games where you can practice playing melodies. Even the idea of "weight transfer" seems related to computer keyboard, like typing without lifting your fingers too high.
Yes, there are gamified learning apps like this. Some of the more well-known ones are Simply Piano, Yousician, Skoove and Synthesia and various clones but just searching "piano" on iOS app store gave me longer list than I cared to scroll through.
The nice thing is that you have to learn to play without looking at your hands because your eyes are fixed at the screen. The less nice part is that especially with Synthesia style it is difficult to play without the app.
Thanks for the recommendation. Ah yes, Synthesia looks familiar - I've seen YouTube videos of people playing fast compositions with colors flying by in 3D.
Good point about the game interface, how getting too used to playing with the color indicators does not translate to sheet music during performances. I think I'll prefer to look at sheet music during practice too.
I'm checking out the other apps you mentioned. So interesting to see successful implementations of the "gamified learning" concept, with piano and other instruments. I can imagine a similar approach might work for other areas of study, like language learning.
Yes, the giant in the language learning area is Duolingo and there are probably too many to list smaller ones. I wrote one word quizz app for myself when I was in high school, too bad startups weren't a thing back then.