They re the best
We love how they teaching our kids
By SUHAYB, M.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
134 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
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.
134 approved reviews, newest moderated first
We love how they teaching our kids
By SUHAYB, M.
Chealse is a great tutor. She is truly involved in my learning progress and prepares in advance for the session to personalize the training according to my needs.
By Keren
His teacher Elizabeth is amazing and takes time to go over anything Anthony doesn’t understand!
By Cristina M.
ClassUp has been a game-changer for my kiddos. Ever since COVID, my son had been struggling with school. Well, now he’s at an A after 3 months of tutoring! The teachers are super smart with loads of experience. I like the weekly classes because they can be used for multiple subjects. We chose 2X a week for my son and saw soooo much progress (one for Math and another for English). Plus, they personally tailored the lessons to fit my kids’ learning styles!! I just purchased another plan for my daughter last month as well. She has some learning blocks because of her AHDH and dysgraphia and they were able to find a teacher certified to help with BOTH! Omg and scheduling is super flexible. We can squeeze in classes whenever we find a moment in our crazy schedule. Major props to ClassUp for making education a breeze for busy moms like me. And a BIGGGG thank you to my learning partner for helping me so much!! #MomApproved
By KG Digital D.
All I want to say is that the education service that ClassUp provides is very professional. From the educational consultant, to the teacher, the learning partner and all the fancy functions in the ClassUp App, I love them all!
By Zenfaya
Tutor just never showed up. I always got charged. Still waiting for a refund. Don't waste your time or money
By Vera
Response from Cosmo (formerly ClassUp)· Jan 22, 2024
Hi there! Thank you for your feedback. We are sorry about your experience and we'd love to help resolve any issues. Our records show that you did not show up to any of your scheduled classes and we had tried calling you multiple times. Your Learning Partner will reach out to you again.
I love my son's teacher.
By Milton santa A.
Wonderful teachers and wonderful support team!
By Mateo