# 들락 (Dlock) vs PLJEC U

The clearest difference is ads: PLJEC U at none against 들락 (Dlock)'s shown. 들락 (Dlock)'s advantage is update cadence (every 5 days vs every 3 weeks) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

들락 (Dlock) ships an update every 5 days, PLJEC U every 3 weeks. The most recent releases landed on August 1, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | 들락 (Dlock) | PLJEC U |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 90 MB | 140 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Seonhyo Kim](https://appshunter.io/developer/1724612424) | [JihooSoft](https://appshunter.io/developer/1571449639) |

## What reviewers say

### 들락 (Dlock)

[App page](https://appshunter.io/ios/app/dlock/id6475640224)

Start your day with 5 minutes of reading to combat dopamine addiction. AI scores your literacy daily and ranks you nationally. Begin your journey to a clearer mind today.

**Highlights:** 5-minute daily reading sessions, AI literacy scoring, National ranking, Dopamine addiction management, Clearer mind focus

**Features:** Vision Pro support

**In-app purchases:** none


### PLJEC U

[App page](https://appshunter.io/ios/app/pljec-u-u/id6742535016)

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

**In-app purchases:** none


## Frequently asked questions

### Is 들락 (Dlock) free?

들락 (Dlock) is free to download, with no in-app purchases.

### Is PLJEC U free?

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

### Do 들락 (Dlock) or PLJEC U have ads?

들락 (Dlock) shows ads; PLJEC U does not.

### Which is updated more often, 들락 (Dlock) or PLJEC U?

들락 (Dlock) ships an update every 5 days, and PLJEC U every 3 weeks. Most recently, 들락 (Dlock) was updated on August 1, 2026 and PLJEC U on September 24, 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.*