# CenterOnline vs S

The clearest difference is iOS requirement: S at 13.0 against CenterOnline's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CenterOnline ships an update every 10 days, S every 2 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CenterOnline | S |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (5 ratings)](https://appshunter.io/ios/app/centeronline/id1241127978/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 61 MB | 50 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ONLINE MANAGEMENT TRAINING JOINT STOCK COMPANY](https://appshunter.io/developer/1054301745) | [Sang Luong Van](https://appshunter.io/developer/1711640946) |

## What reviewers say

### CenterOnline

[App page](https://appshunter.io/ios/app/centeronline/id1241127978)

This app provides parents with comprehensive information about their child's learning progress and achievements at a learning center. It facilitates easy monitoring of student development within the Smart School Interaction System.

**Highlights:** Track learning progress, Monitor academic achievements, Access center information, Smart School Interaction System integration, Parental monitoring tool

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

**In-app purchases:** none


### S

[App page](https://appshunter.io/ios/app/s-box-ptithcm/id6472197292)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CenterOnline free?

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

### Is S free?

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

### Do CenterOnline or S have ads?

Neither CenterOnline nor S shows ads.

### Which is updated more often, CenterOnline or S?

CenterOnline ships an update every 10 days, and S every 2 weeks. Most recently, CenterOnline was updated on November 6, 2026 and S on October 30, 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.*