★★★★★Sunil Rathord13 Nov 2026
this is very helpful and informative and useful
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CompareOpen in Google Playthis is very helpful and informative and useful
naic app
Overhyped in ads, disappointing in reality."
Developer reply
We’re sorry Flexi didn’t live up to the expectations set by our ads. We appreciate your honest feedback and would like to understand where the experience fell short. Please share more details at support@ck12.org. - CK-12 Support Team
It's a very better app,but please fix the mic as it causing trouble.please I really got irritated by the mic. but too I will give five stars as it helps me through my studies.
this app is best because im weak in math and science my mark 28/100 & 15/100 but now in math 85/100 & in science 90/100
iycycycoh ouch vohghodiy
best app
bhenchoud
Developer reply
We’re sorry you had a frustrating experience with Flexi. We’d appreciate hearing your feedback so we can better understand what went wrong. Please reach us at support@ck12.org. - CK-12 Support Team
it is very good app because it helps to your homework and make short note
useless cannot understand stupid app does everything but I am not learning trace app garbage do not download it
Developer reply
We’re sorry Flexi hasn’t helped you learn as expected. We understand how frustrating it is when the app doesn’t understand your questions. Your feedback matters, and we’d appreciate examples of what went wrong. Please contact us at support@ck12.org. - CK-12 Support Team
From 478 saved reviews since 2 May 2026, all countries.
Share of the 99 negative reviews that mention it
“this app I install it because everyone said this app is super good but when I upload this app this is totally fully slow it's not even showing that whatever …”
“it's a really bad app and using it is so inconvenient, the mice doesn't work so you have to enable it but to do that you will be taken to this chrome page wh…”
“this app is the worst app i have seen because this app's ad is very annoying and irritating me please ban this ad”
“this app lack soo much , it is impossible for mobile users to use this app, sometimes if you try to upload picture, it does not take picture again and again,…”
“this app lack soo much , it is impossible for mobile users to use this app, sometimes if you try to upload picture, it does not take picture again and again,…”
“THIS APP IS UNDENIABLE THIS OS CAZY AND THE SIDE 0F RULES AND REGULATION IN THIS APP I TRIED TO LEARN BUT THE AI SHOWED CLEAR SINGS OF RUDENESS AND EVEN SWOR…”
Share of the 364 positive reviews that mention it
“as there is no doubt limit no ads drama..”
“It explains concepts in a simple way and helps students practise questions at their own pace.”
“It's fun.”
“I think every student should download it and it's completely free.”
“I am in std 9th and I too prefer it just some improvements needs to be done 1st ) Pls use animations to teaching if can't just generate a normal diagram .”
A drop after an update usually means the update broke something.