# Rubi - Dual Subtitle Player — Dual subtitles for learners

> Dual subtitles for learners (iPhone/iPad app by Shinichiro Yamashita.)

- Source: https://appshunter.io/ios/app/rubi-dual-subtitle-player/id6762080234 (this page in markdown: same URL + `.md`)
- Developer: [Shinichiro Yamashita](https://appshunter.io/developer/695153141)
- Category: Education, Reference
- Price: Free
- Age rating: 17+
- Requires: iOS 15.0 · 1 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan), Vietnamese
- Released: 2026-09-10
- Data updated: 2026-10-05

## What is Rubi?

Rubi is a Safari extension that adds a second line of subtitles to videos you watch in Safari.

It leaves the site's own subtitles untouched and adds one more language underneath. Listen in English while reading subtitles in both English and your own language at the same time.

SUPPORTED SITES
- YouTube
- Netflix
- Disney+
- Amazon Prime Video
- TED
- Udemy
- Coursera

GETTING STARTED
1. Open a supported site in Safari and tap "aA" in the address bar
2. Choose "Manage Extensions" and turn Rubi on
3. Tap Rubi in the same menu and choose "Always Allow"

Open the app and these steps are shown with illustrations. You only set this up once.

WHAT IT DOES
- Shows a second language on top of the subtitles the service already displays
- Drag the subtitle with your finger to place it wherever you like
- Keeps showing while the video is in full screen

WHO IT IS FOR
- Language learners who want to check meaning without pausing
- Anyone studying Korean, Spanish or another language through film and television
- Listeners who only need help with the lines they missed

Rubi does not stream or provide any video. Playback happens entirely in Safari, under your own account. The subtitles it shows come from the subtitle data each site already serves to you while you are signed in. Rubi does not store, export or share that data.

A Netflix or Disney+ subscription is required for those services. YouTube works for free.


## Version history (last 4 releases)

### 1.0.3 — 2026-10-03

- Now available on iPhone.
- Added support for TED, Udemy and Coursera.
- On Udemy, if a course has no subtitles in your language, Rubi can translate them on your device.
- The app and the extension are now available in English, German, French, Spanish, Portuguese, Korean, Chinese and Vietnamese.

### 1.0.2 — 2026-09-13

- Added support for Amazon Prime Video.
- Fixed the wrong sub-subtitle language being selected on Netflix when opening a different title.
- The sub-subtitle row now shows the remembered language name.
- Fixed subtitles from the previous title lingering on Disney+ after switching.

### 1.0.1 — 2026-09-12

- Fixed Disney+ redirecting to the app download page in Safari on iPad, which made playback impossible.
- Fixed the sub-subtitle setting not showing up on Disney+. You can now pick it from the player's settings menu.
- Sub-subtitles on YouTube can now use YouTube's auto-translated languages.
- Fixed the sub-subtitle menu sometimes not appearing on YouTube.

### 1.0.0 — 2026-09-10

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-05.*