# Online A Big vs RevisionSuccess

The clearest difference is update cadence: RevisionSuccess at every 2 weeks against Online A Big's every 4 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Online A Big sells 5 one-off in-app purchases and RevisionSuccess sells 2 in-app purchases, starting at $12.00 per month. Whichever you choose, the download price is not the number that matters.

Online A Big ships an update every 4 weeks, RevisionSuccess every 2 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Online A Big | RevisionSuccess |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/revisionsuccess-ai-study-app/id6776130065/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 31 MB | 48 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [COURSE SQUARE COMPANY LIMITED](https://appshunter.io/developer/1131668582) | [REVISIONSUCCESS COMPANY LIMITED](https://appshunter.io/developer/6776130277) |

## What reviewers say

### Online A Big

[App page](https://appshunter.io/ios/app/online-a-big/id1493494981)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ตะลุยโจทย์เคมี 9 วิชาสามัญ | $84.99 | one-time |
| ตะลุยโจทย์เคมี PAT2 | $84.99 | one-time |
| ตะลุยโจทย์เคมี 9 วิชาสามัญ | $89.99 | one-time |
| Org. Chem 1 เคมีมหาวิทยาลัย | $199.99 | one-time |
| Org. Chem 2 เคมีมหาวิทยาลัย | $199.99 | one-time |


### RevisionSuccess

[App page](https://appshunter.io/ios/app/revisionsuccess-ai-study-app/id6776130065)

Transform your study materials into a personalized learning system with AI. Generate study plans, interactive lessons, quizzes, and flashcards from your own notes and documents. Get instant answers from an AI tutor and master your subjects faster.

**Highlights:** AI-generated study plans, Interactive lessons and flashcards, Smart quizzes with instant feedback, AI tutor for instant answers, Upload personal study materials, Classroom management for teachers

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $12.00 | per month |
| Pro Annual | $99.00 | per year |


## Frequently asked questions

### Is Online A Big free?

Online A Big is free to download, with in-app purchases available.

### Is RevisionSuccess free?

RevisionSuccess is free to download, with in-app purchases available.

### Do Online A Big or RevisionSuccess have ads?

Neither Online A Big nor RevisionSuccess shows ads.

### Which is updated more often, Online A Big or RevisionSuccess?

Online A Big ships an update every 4 weeks, and RevisionSuccess every 2 weeks. Most recently, Online A Big was updated on October 25, 2026 and RevisionSuccess on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*