STRENGTHEN vs PRACTICE vs MASTER SKILL
Duolingo is becoming too complicated! I know what STRENGTHEN does. But now on my iPhone STRENGTHEN has been replaced with PRACTICE which looks like is used to refill my "health". And I don't know what the MASTER SKILL is for. What's the difference between it and the PRACTICE? Is it just for monetization since every time you MASTER SKILL you will be charged 200 gems!!!!!!!
Could anyone explain them for me?
Information about the Master skill
Don't use the NEW "Master skill" option. It is buggy: https://www.duolingo.com/comment/24933492/MASTER-SKILL-not-working-in-app
Most recent comment in that discussion from three weeks ago:
@kaeladedah et al. Master Skill is working again and since the only update came from Apple with 11.1 that must have fixed whatever was causing the communication gap. It would sure be handy to have all of those gems (around 1600) that I lost back so that I could use them to Master Skills...