I am in the 9th grade and it helps with math stuff i dont understand. Very smart and comes in handy. This might be a turn off for some, but in my opinion, it's fair because it's very helpful.
I bought premium for a month to deal eith calculus and so far, its really helpful. Just wanted to show that you dont need a subscription to use this, its informative as it is. I like the fact that its usefull not only to students but to teachers as well. All I can say is it is just, gladly you made an edit section where I can write the problem instead of making a photo.
Edit: They have issued a refund now, works perfectly fine, i also like the fact they also have textbooks that the teachers use to show if they have the exact answers for it. I need premium I need to pay but imma advise to go to the settings app management and restore the data and you can get it for free so I'm thankful that's all thanks.