# 1日1英単語ウィジェット vs Jazz Theory

The clearest difference is ads: Jazz Theory at none against 1日1英単語ウィジェット's shown. 1日1英単語ウィジェット's advantage is update cadence (every 3 days vs every 2 weeks) and iOS requirement (16 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

1日1英単語ウィジェット ships an update every 3 days, Jazz Theory every 2 weeks. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 1日1英単語ウィジェット | Jazz Theory |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Ad-supported | — |
| Size | 27 MB | 20 MB |
| Requires iOS | **16** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kazuhiro aonuma](https://appshunter.io/developer/839973346) | [ryusei kukita](https://appshunter.io/developer/1896759294) |

## What reviewers say

### 1日1英単語ウィジェット

[App page](https://appshunter.io/ios/app/11/id1611569495)

Learn one new English word daily with this app, focusing on TOEIC-frequent business vocabulary. Utilize widgets for easy access and notifications to build a consistent learning habit. Practice with AI chat for conversational skills.

**Highlights:** Daily vocabulary learning, TOEIC frequent words, Home screen widget, AI chat for practice, Progress tracking, Spaced repetition

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

**In-app purchases:** none


### Jazz Theory

[App page](https://appshunter.io/ios/app/jazz-theory/id6770638400)

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

**In-app purchases:** none


## Frequently asked questions

### Is 1日1英単語ウィジェット free?

1日1英単語ウィジェット is free to download, with no in-app purchases.

### Is Jazz Theory free?

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

### Do 1日1英単語ウィジェット or Jazz Theory have ads?

1日1英単語ウィジェット shows ads; Jazz Theory does not.

### Which is updated more often, 1日1英単語ウィジェット or Jazz Theory?

1日1英単語ウィジェット ships an update every 3 days, and Jazz Theory every 2 weeks. Most recently, 1日1英単語ウィジェット was updated on October 22, 2026 and Jazz Theory on October 16, 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.*