# BYJUNGSOO vs PENETRO

The clearest difference is ads: PENETRO at none against BYJUNGSOO's shown. BYJUNGSOO's advantage is iOS requirement (13.0 vs 16.0). On price, update cadence, 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.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 29, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | BYJUNGSOO | PENETRO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | Monthly |
| Monetization | — | Free |
| Size | 71 MB | 74 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YUL COMPANY CO.,Ltd](https://appshunter.io/developer/1487031025) | [Sumin Yoo](https://appshunter.io/developer/1811949896) |

## What reviewers say

### BYJUNGSOO

[App page](https://appshunter.io/ios/app/byjungsoo/id1487031026)

**Features:** macOS Compatibility

**In-app purchases:** none


### PENETRO

[App page](https://appshunter.io/ios/app/penetro/id6745394348)

Access exclusive coupons and discounts through this mobile application. Features include automatic login, order tracking, and shopping cart management. Receive store notifications and connect to social media.

**Highlights:** Exclusive coupons and discounts, Automatic login, Order tracking, Shopping cart management, Store notifications, Social media access

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BYJUNGSOO free?

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

### Is PENETRO free?

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

### Do BYJUNGSOO or PENETRO have ads?

BYJUNGSOO shows ads; PENETRO does not.

### Which is updated more often, BYJUNGSOO or PENETRO?

BYJUNGSOO ships an update monthly, and PENETRO monthly. Most recently, BYJUNGSOO was updated on October 29, 2026 and PENETRO on November 5, 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.*