# 히든젬 vs Bluck

The clearest difference is in-app purchases: 히든젬 at none against Bluck's 1. 히든젬 also leads on iOS requirement (12.0 vs 15.6). Bluck's advantage is update cadence (every 11 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Bluck sells 1 in-app purchase, starting at $1.99 per month. 히든젬 asks for nothing beyond the download.

히든젬 ships an update every 2 months, Bluck every 11 days. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | 히든젬 | Bluck |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Size | 96 MB | 120 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HiddenLab](https://appshunter.io/developer/1734560386) | [Seungrae Cho](https://appshunter.io/developer/1620778100) |

## What reviewers say

### 히든젬

[App page](https://appshunter.io/ios/app/id6478943422)

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

**In-app purchases:** none


### Bluck

[App page](https://appshunter.io/ios/app/bluck-challenge-tracker/id6740204211)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| pro plan | $1.99 | per month |


## Frequently asked questions

### Is 히든젬 free?

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

### Is Bluck free?

Bluck is free to download, with in-app purchases available.

### Do 히든젬 or Bluck have ads?

Neither 히든젬 nor Bluck shows ads.

### Which is updated more often, 히든젬 or Bluck?

히든젬 ships an update every 2 months, and Bluck every 11 days. Most recently, 히든젬 was updated on October 1, 2026 and Bluck on September 30, 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.*