# 내공스터디 vs 잽영어

The clearest difference is in-app purchases: 내공스터디 at none against 잽영어's 3. 잽영어's advantage is review sentiment (100% vs 75%) and update cadence (every 3 days vs every 6 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 잽영어 sells 3 one-off in-app purchases. 내공스터디 asks for nothing beyond the download.

내공스터디 ships an update every 6 days, 잽영어 every 3 days. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | 내공스터디 | 잽영어 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1526291703/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 75.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 69 MB | 170 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IronTrain Inc.](https://appshunter.io/developer/1071632762) | [Chord on Code](https://appshunter.io/developer/1602483788) |

## What reviewers say

### 내공스터디

[App page](https://appshunter.io/ios/app/id1526291703)

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

**In-app purchases:** none


### 잽영어

[App page](https://appshunter.io/ios/app/id6473166674)

This app helps middle and high school students prepare for English exams by providing tools to study specific texts. It offers features like automatic translation, fill-in-the-blank exercises, and vocabulary practice.

**Highlights:** Upload custom study texts, Automatic translation, Fill-in-the-blank sentence generator, Automatic idiom finder, Personalized vocabulary list, Speech practice, Progress tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zap Mini - 50크레딧 제공 | $1.99 | one-time |
| Zap Lite - 100크레딧 제공 | $3.99 | one-time |
| Zap Pro - 200크레딧 제공 | $4.99 | one-time |


## Frequently asked questions

### Is 내공스터디 free?

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

### Is 잽영어 free?

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

### Do 내공스터디 or 잽영어 have ads?

Neither 내공스터디 nor 잽영어 shows ads.

### Which is updated more often, 내공스터디 or 잽영어?

내공스터디 ships an update every 6 days, and 잽영어 every 3 days. Most recently, 내공스터디 was updated on November 3, 2026 and 잽영어 on November 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*