# Todaii vs Study Timer Study Rainbow

The clearest difference is update cadence: Study Timer Study Rainbow at every 5 days against Todaii's fortnightly. Todaii's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 26.4). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Todaii sells 10 in-app purchases, starting at $4.49 per 3 months 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.

Todaii ships an update fortnightly, Study Timer Study Rainbow every 5 days. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Todaii | Study Timer Study Rainbow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (70 ratings)](https://appshunter.io/ios/app/todaii-easy-korean/id1441601041/reviews)** | — |
| Number of ratings | **70** | — |
| Positive reviews | 73.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 82 MB | 37 MB |
| Requires iOS | **15.6** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ghi Nguyen](https://appshunter.io/developer/933081416) | [Toshiaki Nakamura](https://appshunter.io/developer/822485897) |

## What reviewers say

### Todaii

[App page](https://appshunter.io/ios/app/todaii-easy-korean/id1441601041)

Learn Korean through daily news articles, audio, and video. Practice reading, listening, and pronunciation with a vast vocabulary database and integrated dictionary. Offers offline access and customizable features for an enhanced learning experience.

**Highlights:** Read news with customizable font and language settings, Listen to news audio with adjustable speed and voice, Practice listening and pronunciation with repeat function, Review vocabulary with flashcards, Integrated dictionary for word lookup, Offline reading mode, Night mode for eye comfort

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic version: 3 months | $4.49 | per 3 months |
| Basic version: 3 months | $4.99 | per 3 months |
| Basic version: 3 months | $5.99 | per 3 months |
| Standard version: 1 year | $6.49 | per year |
| Standard version: 1 year | $7.99 | per year |
| Basic version: 3 months | $8.99 | per 3 months |
| Standard version: 1 year | $8.99 | per year |
| Standard version: 1 year | $12.99 | per year |
| Premium version | $8.99 | one-time |
| Premium version | $17.99 | one-time |


### 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 Todaii free?

Todaii 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 Todaii or Study Timer Study Rainbow have ads?

Neither Todaii nor Study Timer Study Rainbow shows ads.

### Which is updated more often, Todaii or Study Timer Study Rainbow?

Todaii ships an update fortnightly, and Study Timer Study Rainbow every 5 days. Most recently, Todaii was updated on September 21, 2026 and Study Timer Study Rainbow on September 18, 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.*