# 암기왕 vs ITD

The clearest difference is in-app purchases: 암기왕 at none against ITD's 8. 암기왕 also leads on update cadence (fortnightly vs every 2 months) and device support (3 vs 1). ITD's advantage is ads (none vs shown). On price there is nothing between them.

Both are free to download. ITD sells 8 in-app purchases, starting at $4.99 per month. 암기왕 asks for nothing beyond the download.

암기왕 ships an update fortnightly, ITD every 2 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 암기왕 | ITD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 73 MB | 124 MB |
| Requires iOS | **13.0** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [AD Lift Co., Ltd](https://appshunter.io/developer/1697835703) | [Jaehyeon Suh](https://appshunter.io/developer/1754173267) |

## What reviewers say

### 암기왕

[App page](https://appshunter.io/ios/app/and/id412399699)

This app helps you memorize vocabulary and manage study routines efficiently. It offers flashcards, spaced repetition, and tools like a Pomodoro timer and study calendar to build consistent learning habits. Track progress and analyze study patterns with detailed reports.

**Highlights:** Flashcard-based vocabulary memorization, Spaced repetition algorithm, Customizable word lists, Pomodoro timer for focus, Study routine scheduling, Learning calendar and reports

**Features:** macOS Compatibility

**In-app purchases:** none


### ITD

[App page](https://appshunter.io/ios/app/itd-pomodoro-study-timer/id6756837604)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 한달 | $4.99 | per month |
| 일년 | $29.99 | per year |
| 별조각 20개 | $0.49 | one-time |
| 별조각 70개 | $1.99 | one-time |
| 별조각 150개 | $4.99 | one-time |
| 별조각 350개 | $9.99 | one-time |
| 별조각 800개 | $17.99 | one-time |
| 평생 집중 | $49.99 | one-time |


## Frequently asked questions

### Is 암기왕 free?

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

### Is ITD free?

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

### Do 암기왕 or ITD have ads?

암기왕 shows ads; ITD does not.

### Which is updated more often, 암기왕 or ITD?

암기왕 ships an update fortnightly, and ITD every 2 months. Most recently, 암기왕 was updated on October 22, 2026 and ITD on October 24, 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.*