My experience with Cosmo
My english teacher is very kind and understanding. She also helped me alot when I cannot figure out a problem.
By Nayel E.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
134 reviews
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Cosmo provides AI-powered personalized learning for K-12 students. 1:1 Live Online Classes That Click. Real teachers + smart AI, always on your schedule.
Cosmo (formerly ClassUp) (cosmoai.com) has 134 customer reviews on The Fair Hearing, with an average rating of 4.1 out of 5.
Showing 99 reviews with 5 stars · Clear filters
My english teacher is very kind and understanding. She also helped me alot when I cannot figure out a problem.
By Nayel E.
cosmo is teaching me a lot and is so fun and exciting but in gakku.ai, the coins need to be payed but can't wait for similar stuff like battle of the brains
By Karthikeya M.
As an adult ESL learner, I have been using the Cosmo App for about a year now and have completed nearly 40 classes. I am extremely satisfied with my progress and the high quality of instruction. The core strength of the program lies in its dedicated teaching staff. I want to give a special shout-out to my favorite teacher, Mr. Jonathan. He is incredibly patient and always takes the time to explain things clearly. Through his ELA-focused lessons, which often dive into novels and poems, I realized that true language mastery is not about counting words or chasing scores. It is the ability to hear a joke and laugh, to read a book and get lost, to speak one's feelings, and to pen one's thoughts.
By customer
Really great program! The teachers are patient, dedicated and the app is very easy to use, with lots of fun, interactive tools. Scheduling is very flexible and we have a dedicated rep who takes great care of us. Overall great way for my daughter to solidify what she learned in class.
By customer
Since working with her teacher Ms. Quentin J. over the past few months using the app, my child has improved incredibly in ELA! Very happy with her progress and growth!
By Tertia C.
Cosmo has been a game-changer for my son's writing skills; the feedback is spot-on, and he actually enjoys writing now.
By Bacalm G.
I never thought my son would get excited about math, but Cosmo just makes it click for him!
By Ccb M.
ClassUp lets my child learn at her speed! The learning partner helps change lessons to match how she's doing.
By Darlene B.