# Plang vs DCDEP Data Engineer Pro Prep

The clearest difference is in-app purchases: DCDEP Data Engineer Pro Prep at none against Plang's 17. Plang's advantage is update cadence (every 8 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Plang sells 11 in-app purchases, starting at $7.99 per month. DCDEP Data Engineer Pro Prep asks for nothing beyond the download.

Plang ships an update every 8 days, DCDEP Data Engineer Pro Prep every 4 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Plang | DCDEP Data Engineer Pro Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (120 ratings)](https://appshunter.io/ios/app/plang-al-english-speaking/id1384279650/reviews)** | — |
| Number of ratings | **120** | — |
| Positive reviews | 89.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 216 MB | 27 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Plang](https://appshunter.io/developer/545132072) | [Davy Raitt](https://appshunter.io/developer/1795318281) |

## What reviewers say

### Plang

[App page](https://appshunter.io/ios/app/plang-al-english-speaking/id1384279650)

This app helps intermediate and advanced English learners improve their speaking fluency by training them to think in English. It offers AI-powered personalized learning paths, shadowing exercises with native speakers, and practice through real-life video content. The goal is to enable natural, confident English expression.

**Highlights:** AI personalized learning paths, Think and speak in English method, Casual conversation practice, Shadowing with native speakers, Learn from local video content, Automated review system

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 플랭 프리미엄 | $7.99 | per month |
| 플랭 프리미엄 | $12.99 | per month |
| 플랭 프리미엄 | $14.99 | per month |
| Plang Premium (1 Month) | $29.00 | per month |
| Plang Boost (1 Month) | $69.00 | per month |
| 플랭 프리미엄 | $69.99 | per year |
| Plang Premium (1 Year) | $99.00 | per year |
| 플랭 프리미엄 | $99.99 | per year |
| Plang Premium (1 Year) | $129.00 | per year |
| Premium Party (2 Members) | $154.99 | per year |
| Plang Boost (1 Year) | $239.00 | per year |


### DCDEP Data Engineer Pro Prep

[App page](https://appshunter.io/ios/app/dcdep-data-engineer-pro-prep/id6758736664)

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

**In-app purchases:** none


## Frequently asked questions

### Is Plang free?

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

### Is DCDEP Data Engineer Pro Prep free?

DCDEP Data Engineer Pro Prep is free to download, with no in-app purchases.

### Do Plang or DCDEP Data Engineer Pro Prep have ads?

Neither Plang nor DCDEP Data Engineer Pro Prep shows ads.

### Which is updated more often, Plang or DCDEP Data Engineer Pro Prep?

Plang ships an update every 8 days, and DCDEP Data Engineer Pro Prep every 4 months. Most recently, Plang was updated on October 29, 2026 and DCDEP Data Engineer Pro Prep on October 25, 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.*