85.3K reviews
Content rating
Everyone
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Content rating
Everyone
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About this app

K12Online is a system to support the whole process of training management, support for teaching - learning, and online testing for general education and continuing education institutions. Designed and built towards a full-featured online education platform for every type of audience in the education industry, from administrators to teachers, students and parents.

Students can self-study, do exercises, take tests, participate in online classes, discuss online... and discover many other utilities right on the K12Online application.

Combined with the available web version, the K12Online application can help managers at the Department/Department/school level to monitor and use the necessary features to support the management, teaching and testing of students. unit.
Online learning and exam management platform K12Online
Updated on
Oct 16, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Committed to follow the Play Families Policy

Ratings and reviews

81.2K reviews
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November 12, 2021
Need fix all connection failure, experience in-app not smooth enough even how good hardware is. The UI & Information are so different from browser and desktop version, therefore hard to quick-switch between 2 devices when there is a connection failure or out of battery,etc. P/s: If you can do mobile version as good as this, why don't you do the similar thing with desktop version.It lacks almost all of available feature on mobile version.
29 people found this review helpful
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Viettel Business Solutions Corporation
June 13, 2022
Thank you for your responding. We apologize for the incovenience you experienced. Please feel free to contact us for further support via k12online@viettel.com.vn!
Kỳ Ngọc Thiên Ân
September 10, 2021
Too many bugs, crashes when opening very regularly 😶 also logging out on it own. Our teachers does not believe us when these errors occur and decrease our scores which is ridiculous. Edit this review because I found another bug: Joined a class on my laptop, but at the end of the class I'm still mark as absent???? Bro 😶
113 people found this review helpful
Did you find this helpful?
Viettel Business Solutions Corporation
June 13, 2022
Thank you for your responding. We apologize for the incovenience you experienced. We are always eager to improve K12Online everyday. Please feel free to contact us for further support via email: k12online@viettel.com.vn.
Trinh Thanh Binh
June 16, 2022
I feel like Viettel has not spend enough time optimizing and developing this essential application for studying. I think Viettel need to focus more on upgrading the infrastructure for online studying. Also, the web for K12 have to be optimized for more web browser such as Firefox, Opera. And why the students like us have to use K12 for virtual class with such horrible experience while we can redirect the class to Zoom application because K12 online class feature is also based on Zoom' platform.
37 people found this review helpful
Did you find this helpful?
Viettel Business Solutions Corporation
June 13, 2022
Thank you for your responding. We apologize for the incovenience you experienced. We are always eager to improve K12Online everyday. Please feel free to contact us for further support via email: k12online@viettel.com.vn.

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