Do not waste your time! Zero star!!

In the beginning Duolingo was an ok app use to learn a new language. Now they have added this new feature called the health bar, every time you make a mistake it takes off a whole bar, and if you have depleted all of your bars, itll end the current lesson and it doesnt let you start from the beginning, unless you wait 4-5 for one bar!!! Or pay for 350 gems replete the whole thing! Or do an exercise to get one bar, but each time the exercise is the same thing over and over again, it gets so repetitive.
All in all this app is a waste time. Im so upset this feature makes the app unusable. They want you to use the app daily but you make a simple typing mistake and you have to wait 5 hours so complete your daily goal. Absolutely hate it!

Pandyto about Duolingo Learn Many Languages for Free, v5.1.6