# POSONE vs I

The clearest difference is update cadence: I at every 3 weeks against POSONE's every 2 months. POSONE's advantage is iOS requirement (11.0 vs 16.0). 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.

POSONE ships an update every 2 months, I every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | POSONE | I |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 19 MB | 11 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [POSCO Eco & Challenge Co., Ltd.](https://appshunter.io/developer/1475733398) | [HDC HYUNDAI DVELOPMENT COMPANY](https://appshunter.io/developer/1482752178) |

## What reviewers say

### POSONE

[App page](https://appshunter.io/ios/app/posone/id1475733399)

This app serves as a community tool for all personnel involved in POSCO E&C construction projects. It facilitates the sharing of construction progress and information among internal and external stakeholders.

**Highlights:** Project progress sharing, Information exchange, Construction site communication, Internal and external stakeholder collaboration, Community building for project teams

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

**In-app purchases:** none


### I

[App page](https://appshunter.io/ios/app/i-safety-20/id6462079976)

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

**In-app purchases:** none


## Frequently asked questions

### Is POSONE free?

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

### Is I free?

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

### Do POSONE or I have ads?

Neither POSONE nor I shows ads.

### Which is updated more often, POSONE or I?

POSONE ships an update every 2 months, and I every 3 weeks. Most recently, POSONE was updated on November 3, 2026 and I on November 3, 2026.

---

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