# PTIT S vs S

The clearest difference is iOS requirement: S at 13.0 against PTIT S's 15.1. 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.

PTIT S ships an update every 8 days, S every 2 weeks. The most recent releases landed on September 19, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | PTIT S | S |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (36 ratings)](https://appshunter.io/ios/app/ptit-s-link/id1545808013/reviews)** | — |
| Number of ratings | **36** | — |
| Positive reviews | 25.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 66 MB | 50 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [AISoft](https://appshunter.io/developer/1534825275) | [Sang Luong Van](https://appshunter.io/developer/1711640946) |

## What reviewers say

### PTIT S

[App page](https://appshunter.io/ios/app/ptit-s-link/id1545808013)

This application provides essential functions for students, lecturers, and administrative staff to support the digital transformation efforts of an academic institution. It aims to enhance training and research quality through streamlined operations.

**Highlights:** Digital transformation support, Enhanced training quality, Improved research quality, Essential functions for users, Streamlined operations

**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 PTIT S free?

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

### Is S free?

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

### Do PTIT S or S have ads?

Neither PTIT S nor S shows ads.

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

PTIT S ships an update every 8 days, and S every 2 weeks. Most recently, PTIT S was updated on September 19, 2026 and S on September 10, 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.*