Cosmo (formerly ClassUp)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 Five Star Index, with an average rating of 4.1 out of 5.
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Education Services · Washington, District of Columbia
Excellent
Education Services · Colorado Springs, Colorado
Excellent
Education Services · Harrisburg, North Carolina
Excellent
Education Services · Rockville, Maryland
Excellent
134 approved reviews, newest moderated first
Preston C.
I love Cosmo for its teachers and learning program. I like how when you register in, it gives you a teacher. When I was in third grade, I used Class Up for the first time and it absolutely loved it for it helped me with English Language Arts for the California State Test. This app is totally worth it :D.
Adhir S.
My kid is learning so much Ms. Lateefa is the best
Yenbyee
Teacher is friendly but it is not worth the amount of fees that we are paying for. We were promised refund but then its limited only for the first 30 days. The classes after were quite a waste of time as there are not much learning to write a good composition. How do I get a refund??
Response from Cosmo (formerly ClassUp)Mar 25, 2026
Thank you for sharing your feedback. We regret to hear that your experience with our writing classes did not meet your expectations regarding value and learning outcomes. Our non-refundable policy is designed to provide a reasonable trial period while ensuring the sustainability of our educational services. The trial window allows new students to assess whether the teaching style and curriculum align with their needs. Beyond this period, we focus on continuous support and adjustments to help each student progress. We take your concern about the composition instruction seriously. Our curriculum is structured to build writing skills progressively, and we regret if this was not clearly communicated or experienced. We would be glad to review your child’s progress and discuss specific areas where we can provide additional guidance or materials. If you would like to explore a resolution, please contact our support team directly at [email protected]
Jade S.
I signed my child up for their 36 lesson-package ($1950) at the start of 2026. We went ahead with COSMO because the trial went well and the tutor assigned happened to fit our child's learning style. We also felt the warmth and enthusiasm coming from their consultants. After having committed to class package, we were assigned a different consultant to follow-up on any "issues" or "help needed". Following the 1st trial, we had countless moments where technical issues surfaced and perhaps due to time difference, the team is unable to respond promptly. Some issues are, the tutor would be doing a practice work with his slide, but we cannot view it, or it is very laggy. This connection issue we face only happens with COSMO app/classes. Currently, we are only able to attend the classes on the ipad, but often with glitches. My child can only do the homework on my iphone when it is running on my Data plan but not my WI-FI. On the APP, it is advised that using a laptop allows a better experience. However, we are unable to even access the login page online. I would like to know if other parents/students from Singapore experience connection issues with this APP like we do. If this is a common problem, then perhaps the Cosmo team should investigate and rectify it before marketing to our region. If this is an isolated issue, I would appreciate more active response and follow-ups to assist us. At the moment, our experience is good with the assigned tutor, but the frustration kicks in when we do not get the prescriptive solutions when facing technical or connection issues. In short, this makes the learning and product experience feel short-changed. If the product is available internationally, it is fitting to provide a hotline or troubleshoot consultant that is from the same region/timezone for better customer experience.
Max L.
Feeling good and happy made a good experience.
Consumer N.
I have a great teacher who clearly explains what is the topic, explains it in a clear format and, and is very engaging and kind.
dhruthi P.
The teachers are nice and understanding. They have specialized courses and let you take your time. My experience is great, and anyone looking for tutoring should enroll here.
David
good Very nice