# Korean vocabulary, TOPIK words vs Study Timer Study Rainbow

The clearest difference is device support: Korean vocabulary, TOPIK words at 3 against Study Timer Study Rainbow's 1. Korean vocabulary, TOPIK words also leads on iOS requirement (15.0 vs 26.4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Korean vocabulary, TOPIK words sells 1 in-app purchase, starting at $4.00 per month and Study Timer Study Rainbow sells 4 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

Korean vocabulary, TOPIK words ships an update every 9 days, Study Timer Study Rainbow every 5 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Korean vocabulary, TOPIK words | Study Timer Study Rainbow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (97 ratings)](https://appshunter.io/ios/app/korean-vocabulary-topik-words/id1490654546/reviews)** | — |
| Number of ratings | **97** | — |
| Positive reviews | 95.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 445 MB | 37 MB |
| Requires iOS | **15.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [JeongHean Kim](https://appshunter.io/developer/1441741186) | [Toshiaki Nakamura](https://appshunter.io/developer/822485897) |

## What reviewers say

### Korean vocabulary, TOPIK words

[App page](https://appshunter.io/ios/app/korean-vocabulary-topik-words/id1490654546)

This app helps you learn Korean vocabulary with daily lessons and review tests. It includes audio pronunciation, example sentences, and progress tracking. Study Korean words anytime, anywhere, even offline.

**Highlights:** Daily Korean vocabulary memorization, Review tests for learned words, Audio pronunciation of vocabulary, Example sentences for context, Progress tracking by part and unit, Favorites for difficult words, Offline access to all words

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Show all examples | $4.00 | per month |


### Study Timer Study Rainbow

[App page](https://appshunter.io/ios/app/study-timer-study-rainbow/id6780163715)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Support Monthly | $0.49 | per month |
| Plus Monthly | $1.99 | per month |
| Student Support Yearly | $5.99 | per year |
| Plus Yearly | $19.99 | per year |


## Frequently asked questions

### Is Korean vocabulary, TOPIK words free?

Korean vocabulary, TOPIK words is free to download, with in-app purchases available.

### Is Study Timer Study Rainbow free?

Study Timer Study Rainbow is free to download, with in-app purchases available.

### Do Korean vocabulary, TOPIK words or Study Timer Study Rainbow have ads?

Neither Korean vocabulary, TOPIK words nor Study Timer Study Rainbow shows ads.

### Which is updated more often, Korean vocabulary, TOPIK words or Study Timer Study Rainbow?

Korean vocabulary, TOPIK words ships an update every 9 days, and Study Timer Study Rainbow every 5 days. Most recently, Korean vocabulary, TOPIK words was updated on October 26, 2026 and Study Timer Study Rainbow 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.*