# zeroStudy

> zeroStudy (iPhone/iPad app by JIA JIUN Ku.)

- Source: https://appshunter.io/ios/app/zerostudy/id6760388575 (this page in markdown: same URL + `.md`)
- Developer: [JIA JIUN Ku](https://appshunter.io/developer/1884246557)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 32 MB
- Languages: American English
- Released: 2026-08-12
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/zerostudy/id6760388575/reviews.md

## What is zeroStudy?

Turn the YouTube videos you already enjoy into a language-learning routine. zeroStudy brings interactive subtitles, vocabulary capture, and spaced repetition together, so watching, understanding, and remembering flow in one place.

LEARN WITH YOUTUBE

• Paste a YouTube link and watch without leaving zeroStudy.
• Follow interactive subtitles as the video plays.
• Select a word or phrase to understand and save it in context.
• Continue recently watched videos and track your daily immersion progress.

REMEMBER WITH REINFORCE

• Review vocabulary with spaced repetition at the right time.
• Use active recall to build durable memory.
• Hear pronunciation and revisit the original sentence.
• Add your own words and phrases manually, with optional AI Auto Fill.
• Track your streak, retention, and learning progress.

KEEP YOUR LEARNING CONNECTED

Your vocabulary and progress stay synced across zeroStudy. The optional Chrome extension gives you another way to collect vocabulary while watching on desktop, but it is not required to use the iPhone app.

Watch what you enjoy. Save what matters. Reinforce what you want to remember.


## Version history (last 4 releases)

### 1.7.0 — 2026-08-18

Explain in context now shows the whole sentence (Pro):

• The explanation now comes with the sentence it is about, and your word highlighted inside it, so "in this sentence" points at something you can actually read.
• That sentence is rebuilt from the subtitle lines around your word, so an idiom or a phrasal verb split across two lines is explained as one whole expression.
• Each explanation is now laid out as the expression, what it means here, and an example, instead of one block of text.

Hear a word the moment you tap it:

• Selecting a word or phrase while watching now plays its pronunciation right away, with no extra tap.

Keyboard shortcuts while watching:

• With a hardware keyboard connected, press A for the previous sentence, S to replay the current one, D for the next, and Space to play or pause.
• On iPad, a shortcut row above the subtitles shows the keys so you do not have to remember them.

### 1.5.0 — 2026-08-13

Daily goal countdown:

• See how much of your learning day is left, right on the home screen.
• The countdown turns red when the day is almost over.

Fixes:

• Your streak no longer resets early. Daily progress now follows your own time zone.
• Immerse now works with videos whose subtitles use a regional language, such as English (United States).
• Settings now shows the correct app version.

### 1.4.0 — 2026-08-12

Introducing Immerse on iPhone:

• Paste a YouTube link and watch without leaving zeroStudy.
• Follow interactive subtitles and select words or phrases in context.
• Continue recently watched videos and track daily immersion progress.
• Move saved vocabulary into Reinforce for spaced-repetition practice.

This update also refreshes the mobile interface and improves playback, subtitle handling, and clipboard link detection.

### 1.2.0 — 2026-08-12

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 2026-08-29.*