# M멤버십 vs OZ viewer

The clearest difference is update cadence: OZ viewer at every 2 days against M멤버십's every 3 months. M멤버십's advantage is iOS requirement (10.0 vs 13.4). 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.

M멤버십 ships an update every 3 months, OZ viewer every 2 days. The most recent releases landed on September 21, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | M멤버십 | OZ viewer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 21.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 1 MB | 12 MB |
| Requires iOS | **10.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Kyung  Yul Kim](https://appshunter.io/developer/670230812) | [YLAB Earth](https://appshunter.io/developer/1777383384) |

## What reviewers say

### M멤버십

[App page](https://appshunter.io/ios/app/m/id995871403)

This app allows members to authenticate themselves via smartphone, enabling use of unmanned kiosks. It functions as a mobile membership card for point card discounts and accrual, with enhanced security to prevent unauthorized sharing or theft.

**Highlights:** Smartphone authentication, Unmanned kiosk compatibility, Mobile membership card, Point card discounts and accrual, Enhanced security for mobile barcodes, Theft prevention

**Features:** macOS Compatibility

**In-app purchases:** none


### OZ viewer

[App page](https://appshunter.io/ios/app/oz-viewer/id6737684535)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is M멤버십 free?

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

### Is OZ viewer free?

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

### Do M멤버십 or OZ viewer have ads?

Neither M멤버십 nor OZ viewer shows ads.

### Which is updated more often, M멤버십 or OZ viewer?

M멤버십 ships an update every 3 months, and OZ viewer every 2 days. Most recently, M멤버십 was updated on September 21, 2026 and OZ viewer on October 11, 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.*