Duolingo Max Extension Derivatives: I recommend just using the Duolingo Max extension linked here: https://github.com/apersongithub/Duolingo-Unlimited-Hearts
This list was made to separate from my other Duolingo Scripts (Ex: Inf XP/Gems/Streaks/Badges) that has a possibly of getting you leader-board or other types of bans if abused heavily.
View my full profile if you want to see those scripts.
Happy learning!