SELF U vs Online A Big
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SELF U
This platform offers a comprehensive online learning experience with courses taught by experts across various subjects. Access lessons anytime, anywhere, and manage your learning journey conveniently. Enhance your skills and knowledge with a wide range of educational content.
- Anywhere, Anytime Learning
- Class Booking Management
- Full Coverage of Study Areas
- Expert and Famous Instructors
- Self-Development Courses
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SELF U is the best one-stop online classroom and the most innovative online learning platform which covers in all areas of study, taught by many experts and famous instructors. It is the easiest, fastest and the most convenient way for everyone to study online. - Anywhere, Anytime: The most rigorously intensive way to study and enhance yourself! With the most innovative features of SELF U, you can learn and manage your class booking without the limitation of time and place. Also, you can instantly access to SELF U anywhere and anytime. - Full coverage in all study areas! By using SELF U, you can learn all areas of study, from English Language, English for Entrance/Admission, English for University Examination to Self-development and other subjects, all concluded in this one-stop application. - Learn with expert and famous instructors! SELF U is the platform that you can learn full coverage subjects taught by expert and famous instructors, i.e. Kru P Nan Enconcept who has been teaching many students that became No.1 in every tests of Thailand.
Online A Big
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กวดวิชาครูบิ๊กออนไลน์ ผู้เชี่ยวชาญอันดับ 1 วิชาเคมี เรียนวิทยาศาสตร์ทุกระดับชั้น ติวสอบเข้าม. 1 ติวสอบ PAT ติวสอบ 9 วิชาสามัญ สอบเข้ามหาวิทยาลัย เรียนผ่านออนไลน์ ได้ทุกอุปกรณ์ ทั้งคอมพิวเตอร์ แท็บเล็ต และโทรศัพท์มือถือ
Screenshots
Verdict
The clearest difference is iOS requirement: SELF U at 12.0 against Online A Big's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SELF U sells 7 one-off in-app purchases and Online A Big sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
SELF U ships an update every 5 weeks, Online A Big every 4 weeks. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.
| Parameter | SELF U | Online A Big |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 41.2% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 120 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | XeerSoft Thailand Co,Ltd. | COURSE SQUARE COMPANY LIMITED |
In-app purchases
SELF U
- Pack Read Around (Lesson 1-4)$64.99
- Advanced Vocab + Reading$119.99
- Advanced Vocab & Reading$119.99
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- Complete 5,000 Vocabularies$139.99
- Ultimate Writing ปี 2559$174.99
- Advanced Writing (เทอม 1/61)$209.99
- Advanced Admission (เทอม 1/60)$299.99
Online A Big
- ตะลุยโจทย์เคมี 9 วิชาสามัญ3 variants$84.99
- ตะลุยโจทย์เคมี PAT22 variants$84.99
- ตะลุยโจทย์เคมี 9 วิชาสามัญ$89.99
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- Org. Chem 1 เคมีมหาวิทยาลัย$199.99
- Org. Chem 2 เคมีมหาวิทยาลัย$199.99
