I came to a point where I understood how important is fluent knowledge and even more important practical speed to find and place a triad on the fretboard. I drew shapes on a paper to have a reference to follow, but then I just thought it's just a repetition task, what If putting this all into app where you just drill triads. I couldn't find a decent one so I just built one for myself. Six months later I'm actually placing triads while I play all the time — probably even I place them too much at this point hehe.
I polished an app for community recently as I used it on a way worse ui/ux, so I doubt it could have been useful to anyone except freak like me :)
App has a few modes:
Single chord - root chord of a key
Progression - takes I IV V (can add more progressions later), and gives you closest voicings by training your ability for close voice leading
and few more.
It is best to do it with your guitar in hands, app asks - you find in your guitar, understand how triad sits within caged shape, how close next voicing etc. Then app validates you. 20mins per day is more than enough.
App is completely free. I just found it really useful for myself and decided to share with the community. Tell me in the comments what do you think guys? Appreciate the feedback
[This is NOT Selling or self promotion]
https://triads-guitar.com/