Source-backed analysis8
Review basis
Research-based review: the AppDuo Editorial Team compiled it from official pages, documentation, app stores, press and user feedback, without hands-on testing. Every claim links to a source with the date it was checked.
8 reference sourcesInformation updated Nov 10, 2026
How we review
OLM Review
Textbook-aligned online learning and testing, with tools for teachers and schools
By AppDuo Editorial Team · Updated
- Web
- iOS
- Android
On this page
Decide at a glance
Our verdict
Suits teachers and schools that want to assign work, run exams and track students, and students studying along the textbook. The app's ratings are very low (1.8/5 on the App Store, 2.1/5 on Google Play), with many complaints about bugs and automatic submission.
Best for: Teachers who need to assign work, build tests from a question bank and see reports
Skip it if: Those who need a stable, low-bug mobile app
Pros
- Large library: the App Store description cites 9,000+ lecture videos and thousands of practice sets and tests
- Teacher and school toolkit: class management, assignments, test building, exams and reports
- Many modules: aptitude assessment, contests, quiz arenas and the OLM Phụ huynh parent app
Cons
- Low app ratings: 1.8/5 (App Store, 1.6K ratings) and 2.1/5 (Google Play, 4K ratings)
- Recent reviews complain about lag, crashes, automatic submission and forced updates
All pros and cons · Who is it for?
Pros
- Hotline, email, Facebook and a help center
Cons
- Web VIP prices show only after login; the privacy policy dates from 2015 and does not match the store declarations
Best for
- Schools wanting to manage classes and teacher and student accounts
- Grade 1-12 students studying along the textbook who enjoy contests and quiz arenas
Skip it if
- People who want to see website prices without logging in
Problems it solves
Experience & key features
OLM is run by Educational Science and Technology Joint Stock Company in Hanoi. The company page says OLM began in 2011 as a system of programmed primary-school maths exercises so students could practise regularly without repeated questions; it now describes itself as a platform for teaching, learning, education management and digital content.
For students OLM offers lessons, tests, Q&A, contests and aptitude assessment. The App Store description cites 9,000+ lecture videos for grades 1-12 aligned to the textbook; this is the vendor's own figure. For teachers the intro pages list class and content management, assignments, test building from a question bank by matrix, running exams and reports. Schools get a role-based account system.
Pricing and user ratings
Web VIP prices appear only after login. The Vietnamese App Store sells VIP at 199,000 VND for 1 month, 799,000 VND for 6 months and 1,399,000 VND for 1 year. App ratings are very low: 1.8/5 on the App Store and 2.1/5 on Google Play, with recent reviews complaining about lag, crashes, automatically submitted tests and forced updates.
According to a post on OLM's own website, it received the Smart Education Initiative award (SEI Awards 2023) in the Education Impact of the Year category. Compared with similar platforms, OLM's strength is its toolkit for teachers and schools; its clearest weakness, judging by store reviews, is mobile app quality.
Screenshots
Plans & pricing
Prices last verified Nov 10, 2026
Miễn phí / Free
PersonalFree
The app download and account registration are free. The pages read do not say what a free account includes; the web VIP pricing table requires login to view.
VIP (App Store)
Personal₫199,000/mo/user
₫116,583/mo billed yearly
In-app purchase prices on the Vietnamese App Store: Vip 1 Tháng 199,000 VND, Vip 6 Tháng 799,000 VND, Vip 1 Năm 1,399,000 VND (about 116,600 VND/month). The US App Store lists 6.99, 24.99 and 49.99 USD respectively. Website VIP prices appear only after login and may differ.
Giáo viên và nhà trường / Teachers and schools
BusinessContact sales
The teacher page has "Dùng thử" (Try) and "Xem gói VIP" (View VIP plans) buttons, but shows no prices to logged-out visitors.
- Free plan limits
- No complete public information on free-account limits was found on the pages read.
- Free trial
- No free trial
Cancellation & refunds
No refund policy was found on the pages read; iOS in-app purchases follow App Store rules.
Privacy
The website's privacy policy is dated 27 October 2015. It says OLM collects a display name, username, password (stored encrypted), email and optionally a phone number and school. Web payments go through a third party (store.baokim.vn) and OLM says it keeps no card information. Data is stored on the company's servers and deleted 3 years after the last login. The policy has no dedicated section on children's data. On the App Store (where the developer is listed as Tho Ha Duc) and Google Play, the app declares that it collects no data, which does not match the website policy's list of data collected at sign-up.
OLM alternatives
6.8/10VietJack
Textbook solutions, exams and courses for grades 1-12
6.7/10HOCMAI
Online grade 1-12 courses and exam prep, sold course by course
Frequently asked questions
Is OLM free?
Downloading the app and registering are free. OLM has a paid VIP plan; the pages read do not say clearly what the free part includes.
How much is OLM VIP?
On the Vietnamese App Store: 199,000 VND for 1 month, 799,000 VND for 6 months, 1,399,000 VND for 1 year. Website prices show only after login.
Does OLM have a parent app?
Yes. The intro page lists an OLM Parent app for following a child's study and communicating with teachers and the school.
How long is my data kept?
The policy says information is deleted 3 years after the last login.
Review evidence & sources8
Scores
- Ease of use
- 5.8
- Features
- 7.6
- Value for money
- 6.3
- Performance
- 5.2
- Support
- 6.8
- Privacy & security
- 5.8
Why this score
Grade and subject structure is clear, but app ratings are only 1.8-2.1/5 and reviews cite auto-submit bugs, lag and repeated forced updates. The interface is Vietnamese-only.
Why this score
Video content, practice, tests, aptitude assessment, teacher tools and school management in one ecosystem.
Why this score
On the Vietnamese App Store VIP costs 199,000 VND/month or 1,399,000 VND/year, while web prices need a login and the free tier is not spelled out. Low app quality pulls value down further.
Why this score
Recent Google Play and App Store reviews mention lag, crashes and auto-submission; no independent measurements were found.
Why this score
Hotline, email, Facebook Messenger and a help center exist, though user reviews still complain of unresolved bugs.
Why this score
Passwords stored encrypted, data deleted after 3 years of inactivity, no card storage. Marked down for a 2015 policy with no children's section, and store declarations of "no data collected" that contradict the website policy.
What users say
- App Store (VN)1.8/5 · 1,600
- Google Play (VN)2.1/5 · 4,030
Sources
- Vendor-providedOLM About pageNov 10, 2026
- Vendor-providedOLM for teachers and schoolsNov 10, 2026
- Vendor-providedOLM company pageNov 10, 2026
- Vendor-providedOLM privacy policyNov 10, 2026
- Vendor-providedOLM news: SEI Awards 2023Nov 10, 2026
- storeApp Store listing (VN)Nov 10, 2026
- storeGoogle Play listing (VN)Nov 10, 2026
- storeApp Store listing (US)Nov 10, 2026
Specs & compatibility
- Developer
- Công ty Cổ phần Khoa học và Công nghệ Giáo dục
- Headquarters
- Vietnam
- Launched
- 2011
- Category
- Education
Capabilities
- Mobile app
- Real-time collaboration
- AI features
Platforms
- Web
- iOS
- Android
Interface languages
- Vietnamese
Support
- Phone
- Live chat
- Help center
Change history
- Update.OLM received the Smart Education Initiative award (SEI Awards 2023) in the Education Impact of the Year category.
- Update.Privacy policy published on the website (then called Online Math).
- Launch.OLM started as a system of programmed primary-school maths exercises for regular practice without repeats. The exact month is not stated.
About the author
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