it is very slow to load on my I phone and slow on my android. NOT IMPRESSED with the slowness . People seem to have learned how to cheat,(getting through lessons super fast ) you have to be first three to get gems that get you hearts. my hubbie pays for Duolingo and his loads up slower than mine most of the time. He's not impressed, I told him to stop paying. Also, don't trust the ads I don't buy anything off Duolingo anymore from my experience.