# CaptionTube vs アイ

The clearest difference is ads: CaptionTube at none against アイ's shown. CaptionTube also leads on update cadence (every 8 days vs every 3 weeks) and iOS requirement (13.0 vs 15.1). 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.

CaptionTube ships an update every 8 days, アイ every 3 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CaptionTube | アイ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/11/id6766015033/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | — | Ad-supported |
| Size | 39 MB | 100 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Hironobu Saito](https://appshunter.io/developer/1557456154) | [Ae 7 LLC](https://appshunter.io/developer/1896163219) |

## What reviewers say

### CaptionTube

[App page](https://appshunter.io/ios/app/captiontube/id6754217528)

**Features:** macOS Compatibility

**In-app purchases:** none


### アイ

[App page](https://appshunter.io/ios/app/11/id6766015033)

This app offers a gamified approach to English learning, featuring swipe-based quizzes for vocabulary, grammar, listening, and image recognition. It includes community features for asking questions and a ranking system to boost motivation. Aimed at making daily study engaging and sustainable.

**Highlights:** Swipe-based English quizzes, Vocabulary, grammar, listening, and photo questions, Community 'talk rooms' for questions, Weekly ranking for motivation, Daily learning streak tracking, Gamified learning experience

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CaptionTube free?

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

### Is アイ free?

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

### Do CaptionTube or アイ have ads?

アイ shows ads; CaptionTube does not.

### Which is updated more often, CaptionTube or アイ?

CaptionTube ships an update every 8 days, and アイ every 3 weeks. Most recently, CaptionTube was updated on October 24, 2026 and アイ on October 15, 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.*