# 타임키퍼 프로 vs OZ viewer

The clearest difference is update cadence: OZ viewer at every 2 days against 타임키퍼 프로's every 4 months. 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.

타임키퍼 프로 ships an update every 4 months, OZ viewer every 2 days. Both last shipped on October 11, 2026.

## The numbers

| Metric | 타임키퍼 프로 | OZ viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 11 MB | 12 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NOVUSMAY](https://appshunter.io/developer/1448003395) | [YLAB Earth](https://appshunter.io/developer/1777383384) |

## What reviewers say

### 타임키퍼 프로

[App page](https://appshunter.io/ios/app/id6446350245)

**Features:** Vision Pro support

**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 타임키퍼 프로 free?

타임키퍼 프로 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 타임키퍼 프로 or OZ viewer have ads?

Neither 타임키퍼 프로 nor OZ viewer shows ads.

### Which is updated more often, 타임키퍼 프로 or OZ viewer?

타임키퍼 프로 ships an update every 4 months, and OZ viewer every 2 days. Most recently, 타임키퍼 프로 was updated on October 11, 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.*