# SupK vs O

The clearest difference is update cadence: SupK at every 2 months against O's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SupK ships an update every 2 months, O every 5 months. The most recent releases landed on July 4, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | SupK | O |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 41 MB | 9 MB |
| Requires iOS | 13.0 | **12.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chalit Chathirat](https://appshunter.io/developer/910858647) | [teerapat supamitsatian](https://appshunter.io/developer/1504648563) |

## What reviewers say

### SupK

[App page](https://appshunter.io/ios/app/supk/id1208521621)

Manage your educational journey with live class features, course registration, and booking management. Track your history, check in, provide feedback, and access contact information for support.

**Highlights:** Live class features, Course registration, Booking and cancellation, History tracking, Check-in functionality, Feedback submission, Contact SupK Center

**Features:** macOS Compatibility

**In-app purchases:** none


### O

[App page](https://appshunter.io/ios/app/o-plus-online/id1504677992)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SupK free?

SupK is free to download, with no in-app purchases.

### Is O free?

O is free to download, with no in-app purchases.

### Do SupK or O have ads?

Neither SupK nor O shows ads.

### Which is updated more often, SupK or O?

SupK ships an update every 2 months, and O every 5 months. Most recently, SupK was updated on July 4, 2026 and O on September 17, 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.*