# 영 단어즙 vs protostar

The clearest difference is in-app purchases: 영 단어즙 at none against protostar's 1. 영 단어즙 also leads on ads (none vs shown) and device support (3 vs 1). protostar's advantage is update cadence (every 3 weeks vs every 33 months) and iOS requirement (10 vs 15.6). On price and rating there is nothing between them.

Both are free to download. protostar sells 1 one-off in-app purchase. 영 단어즙 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 영 단어즙 against 5.0 for protostar. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

영 단어즙 ships an update every 33 months, protostar every 3 weeks. The most recent releases landed on September 17, 2026 and June 22, 2026 respectively.

## The numbers

| Metric | 영 단어즙 | protostar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/id1480979760/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/protostar/id1504821938/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 33 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 20 MB | 155 MB |
| Requires iOS | 15.6 | **10** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [별책](https://appshunter.io/developer/569035377) | [Longzhe Education Technology (Shanghai) Co., Ltd.](https://appshunter.io/developer/1504821937) |

## What reviewers say

### 영 단어즙

[App page](https://appshunter.io/ios/app/id1480979760)

This app offers a concentrated approach to learning English vocabulary through daily, bite-sized "juice" extractions. It uses a quiz format to help users memorize words, tracking incorrect answers for targeted review. Various visual styles and an integrated English-English dictionary enhance the learning experience.

**Highlights:** Daily vocabulary "juice" extraction, Quiz-based learning format, Tracking of incorrect words for review, Integrated Oxford English-English dictionary, Native speaker pronunciation audio, iCloud data synchronization, Customizable learning deadlines

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

**In-app purchases:** none


### protostar

[App page](https://appshunter.io/ios/app/protostar/id1504821938)

This educational app is designed for students aged 7-12, offering a platform for watching learning videos and playing interactive games. It is exclusively for users of the protostar education company and is available on iPad.

**Highlights:** Learning videos, Educational games, Preview content, Review content, Designed for ages 7-12

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protostar English Course | $299.99 | one-time |


## Frequently asked questions

### Is 영 단어즙 free?

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

### Is protostar free?

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

### Which has better reviews, 영 단어즙 or protostar?

영 단어즙 and protostar are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do 영 단어즙 or protostar have ads?

protostar shows ads; 영 단어즙 does not.

### Which is updated more often, 영 단어즙 or protostar?

영 단어즙 ships an update every 33 months, and protostar every 3 weeks. Most recently, 영 단어즙 was updated on September 17, 2026 and protostar on June 22, 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.*