# 잽영어 vs 스터디 AI

The clearest difference is update cadence: 잽영어 at every 2 days against 스터디 AI's every 6 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 잽영어 sells 3 one-off in-app purchases and 스터디 AI sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

잽영어 ships an update every 2 days, 스터디 AI every 6 days. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 잽영어 | 스터디 AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 6 days |
| Monetization | — | Free with in-app purchases |
| Size | 159 MB | 18 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chord on Code](https://appshunter.io/developer/1602483788) | [Trend Vibe](https://appshunter.io/developer/1813152500) |

## What reviewers say

### 잽영어

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

**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 |


### 스터디 AI

[App page](https://appshunter.io/ios/app/ai-pdf/id6760990243)

This AI-powered learning app helps students efficiently organize lecture materials, notes, and recordings. It summarizes complex documents, generates practice quizzes, and offers AI chat support for quick clarification. Features include automatic note-taking from lectures, flashcards, and memorization tools for effective exam preparation.

**Highlights:** AI lecture material summarization, Automatic lecture note-taking, Practice exam generation, Exam paper analysis and problem generation, Flashcard creation for repetition, Memorization notebook, AI chat for study questions, 90+ language support for lecture recording

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Study AI Pro Monthly | $6.99 | per month |
| 스터디 AI Pro | $34.99 | per 6 months |
| Stdy AI Pro Yearly (Promotion) | $44.99 | per year |
| 스터디 AI Pro | $59.99 | per year |


## Frequently asked questions

### Is 잽영어 free?

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

### Is 스터디 AI free?

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

### Do 잽영어 or 스터디 AI have ads?

Neither 잽영어 nor 스터디 AI shows ads.

### Which is updated more often, 잽영어 or 스터디 AI?

잽영어 ships an update every 2 days, and 스터디 AI every 6 days. Most recently, 잽영어 was updated on October 12, 2026 and 스터디 AI on October 14, 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.*