# IDIY vs 英検®準1級 でた単

The clearest difference is price: IDIY at Free against 英検®準1級 でた単's $5.99. 英検®準1級 でた単's advantage is update cadence (every 2 days vs fortnightly) and review sentiment (71% vs 49%). On ads, in-app purchases, monetization model and device support there is nothing between them.

IDIY is free to download; 英検®準1級 でた単 costs $5.99 up front. IDIY sells 16 one-off in-app purchases and 英検®準1級 でた単 sells 5 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

IDIY ships an update fortnightly, 英検®準1級 でた単 every 2 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | IDIY | 英検®準1級 でた単 |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | — | **[4.6 (9 ratings)](https://appshunter.io/ios/app/1/id1406157182/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | 48.8% of reviews | **71.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 70 MB | 188 MB |
| Requires iOS | 16 | **15.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ROUTINGSYSTEMS. INC](https://appshunter.io/developer/1149802102) | [Namiko Takahashi](https://appshunter.io/developer/1349212420) |

## What reviewers say

### IDIY

[App page](https://appshunter.io/ios/app/idiy/id1363811179)

Receive personalized English writing feedback from instructors worldwide. Improve your writing skills through daily prompts, custom submissions, and interactive messaging. Access free online English courses to supplement your learning.

**Highlights:** Personalized English writing feedback, Daily writing prompts, Upload your own English texts, Instructor messaging, Free online English courses, Progress tracking, Native and bilingual instructors

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CEFR A2レベル単語帳 | $4.99 | one-time |
| CEFR B2レベル単語帳 | $4.99 | one-time |
| CEFR C1レベル単語帳 | $4.99 | one-time |
| CEFR B1レベル単語帳 | $4.99 | one-time |
| CEFR A1レベル単語帳 | $4.99 | one-time |
| CEFR C2レベル単語帳 | $4.99 | one-time |
| 500ポイント | $39.99 | one-time |
| 700ポイント | $59.99 | one-time |
| 1000ポイント | $69.99 | one-time |
| 学べるプランライト50単語 3ヶ月 | $149.99 | one-time |
| 2000ポイント | $149.99 | one-time |
| 学べるプランスタンダードプラス50単語 3ヶ月 | $229.99 | one-time |
| 学べるプランライト100単語 3ヶ月 | $299.99 | one-time |
| 学べるプランスタンダードプラス100単語 3ヶ月 | $349.99 | one-time |
| 学べるプランライト200単語 3ヶ月 | $599.99 | one-time |
| 学べるプランスタンダードプラス200単語 3ヶ月 | $699.99 | one-time |


### 英検®準1級 でた単

[App page](https://appshunter.io/ios/app/1/id1406157182)

Master vocabulary for the Eiken Grade Pre-1 exam with this app. It features over 5,500 words categorized by part of speech and frequency of appearance in past exams. Practice with quizzes, create custom word lists, and improve typing skills for the exam.

**Highlights:** Extensive vocabulary list (5,572 words), Categorized by part of speech and frequency, Practice quizzes with scoring, Customizable word lists, Typing practice for exam preparation, Covers 84 past Eiken Grade Pre-1 exams

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| でた単プレミアム 1ヶ月 | $1.99 | per month |
| でた単プレミアム 1年間 | $11.99 | per year |
| 語彙問題集チケット | $3.99 | one-time |
| 語彙問題集セットQ1 | $3.99 | one-time |
| 語彙問題セット準1級-解説なし(02〜12の11セット) | $5.99 | one-time |


## Frequently asked questions

### Is IDIY free?

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

### Is 英検®準1級 でた単 free?

英検®準1級 でた単 costs $5.99, and also offers in-app purchases.

### Do IDIY or 英検®準1級 でた単 have ads?

Neither IDIY nor 英検®準1級 でた単 shows ads.

### Which is updated more often, IDIY or 英検®準1級 でた単?

IDIY ships an update fortnightly, and 英検®準1級 でた単 every 2 days. Most recently, IDIY was updated on October 16, 2026 and 英検®準1級 でた単 on October 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*