# Presub — Video Subtitles — Textbook MP3 & video script

> On-device video subtitle generation with translation and export. (iPhone/iPad app by KYOUNG HOON SONG.)

- Source: https://appshunter.io/ios/app/presub-video-subtitles/id6809770242 (this page in markdown: same URL + `.md`)
- Developer: [KYOUNG HOON SONG](https://appshunter.io/developer/6795466220)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 26.0 · 7 MB
- Languages: Korean, American English, Japanese, Chinese (Traditional, Taiwan)
- Released: 2026-09-25
- Data updated: 2026-10-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/presub-video-subtitles/id6809770242/reviews.md

## What is Presub?

Turn what a video says into original and translated subtitles.

This is not live interpretation. Subtitles are built ahead of playback and kept, so wherever you rewind to, the captions are already there. What you build is saved and reopens instantly.

■ It all happens on your device
Speech recognition and translation both run on this iPhone. No server, no account, no login. The audio never leaves your phone.

■ Rewind and the subtitles are still there
When you want to hear a line again, a live-captioning app cannot caption sound that has already passed. Presub builds captions ahead of playback and keeps them, so they are there when you rewind or reopen.

■ Original and translation together
Read what you hear next to what it means. Choose which one is larger and how big the text is. Move sentence by sentence, "Repeat this line", or slow playback down. Keep listening with the screen off, and skip to the previous or next line from the Lock Screen.

■ Textbook MP3s into transcripts
Open audio files on your device like TOEIC and TOEFL listening audio or lecture recordings. The original and translation appear for each line. Press and hold a line you missed to repeat only that line. Press and hold an unknown word to look it up instantly.

■ Save and review
Save sentences and words from subtitles to gather them in the "Review" tab. Move expressions you have memorized to "Learned", mark difficult ones with a star to filter by "Difficulty", and "Review with cards". Listen again with device audio, and export to Anki/CSV.

■ The subtitle list is a transcript
Open the sentences as a list, read back through them, and tap one to jump to that moment. Export as an SRT subtitle file or plain text.

■ Not just English
Speech in Korean, English, Japanese and Chinese becomes subtitles, translated between them. Keep the original and the translation side by side and read it like a script.

■ Featured channels
Open public broadcasts such as the U.S. Federal Reserve's FOMC press conferences, NHK news and Taiwan's Legislative Yuan right inside the app.

■ What you can open
Video and audio files on your device, and unprotected web video opened in the app's browser. Protected video (YouTube, Netflix and the like) is not supported.

Languages: Korean · English · Japanese · Chinese (Traditional)

Free for 3 new videos a day. Video length is not counted, and reopening subtitles you already made is not counted either. You can save up to 30 expressions in "Learning" for free ("Learned" expressions are not counted). A single purchase removes this limit and enables exporting to Anki/CSV. It is not a subscription.

## Key features

- On-device subtitle creation
- Real-time subtitle playback
- Original and translated text display
- Subtitle export (SRT)
- Supports local video/audio files
- Adjustable text size and playback speed

## Is Presub safe?

Not enough ratings yet to assess Presub.

## Is Presub legit?

Presub — Video Subtitles appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Presub is 65 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/presub-video-subtitles/id6809770242/reviews.md

### 5/5 — 번역되네

*2026-09-27*

실시간 뉴스 보기 좋네요

## Frequently asked questions about Presub

### Does Presub have ads?

No, Presub does not contain advertisements. The app is free to use with limitations on new subtitle creation per day, which can be removed with a one-time purchase.

### How much does Presub cost?

Presub is free to download and use, allowing up to 3 new subtitle creations per day. A one-time purchase removes this daily limit and is not a subscription.

### What devices does Presub support?

Presub is available for iPhone and iPad devices. It was last updated on 2026-09-27 with version 1.0.2.

### Can Presub translate YouTube or Netflix videos?

No, Presub cannot handle protected videos like those from YouTube or Netflix. It supports local video/audio files and unprotected web videos accessed through its in-app browser.

### What languages does Presub support for translation?

Presub supports Korean, English, Japanese, and Traditional Chinese for its subtitle generation and translation features.

### How often is Presub updated?

Presub was last updated on 2026-09-27 to version 1.0.2. The release date for the app was 2026-09-25.

### Is Presub suitable for younger users?

Presub has an age rating of 17+, indicating it may contain content or features not suitable for all ages. Users should exercise discretion.

### Can I export subtitles from Presub?

Yes, Presub allows you to export generated subtitles as SRT files or plain text. The subtitle list itself also functions as a script.

## Version history (last 5 releases)

### 1.1.0 — 2026-10-07

• Save & Review — Press and hold a subtitle line to save sentences, and save words from the dictionary lookup
• "Review" tab — Divided into "Learning" and "Learned". Filter by "Difficulty" and "Review with cards". Listen again with device TTS
• Export to Anki & CSV (when limits are removed)
• "Redeem Code" on the purchase screen
• Fixed: Some text on the purchase screen showing in Korean for other languages; displayed filename of imported files

### 1.0.4 — 2026-10-06

• 화면을 꺼도 듣습니다 — 잠금 화면에서 멈춤, 이전·다음 문장
• 이 문장 반복 재생 — 한 문장을 계속 들으며 따라 말해 보세요. 반복 중에는 노란 표시가 뜹니다
• 자막 목록에서 줄을 길게 누르면 단어 찾아보기 · 문장 복사

### 1.0.3 — 2026-10-05

• 숫자 번역 정확도 개선 — 「a quarter of a percentage point」 같은 말로 읽은 금리·분수를 0.25%p처럼 정확히 옮깁니다
• 자막을 만드는 중에 다른 앱에 다녀와도 이어서 만듭니다
• 「다시 시도」 「자막 지우고 다시 만들기」가 더 안정적으로 동작합니다
• 연준 채널: 회의가 없는 날에는 최근 기자회견이 열린다는 안내를 보여 줍니다
• iOS 27 시스템 자동 자막과 겹치지 않게 했습니다

### 1.0.2 — 2026-09-27

• Subtitles are made in 20-second parts ahead of playback, so you start watching sooner
• Large video files play right away; only the audio is fetched to make subtitles
• Streams are fetched once and shared by playback and subtitles — less data
• Featured channels set the spoken language automatically; NHK WORLD-JAPAN live opens directly
• A progress ring shows while subtitles are being made
• Ad links over a video no longer open other sites, and detection works on more sites
• Short clips (often ads) are no longer taken over automatically — tap “Show subtitles for this video” instead
• Returning to the app resumes where you were, paused

### 1.0.0 — 2026-09-25

No release notes.

## Apps similar to Presub

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [AI Recorder: Live Transcriber](https://appshunter.io/ios/app/ai-recorder-live-transcriber/id6785515364) | 5.0 (5) | Free | Utilities |
| [JVC](https://appshunter.io/ios/app/jvc/id1439298962) | — | Free | Utilities |
| [Mobile Display – HDMI Monitor](https://appshunter.io/ios/app/mobile-display-hdmi-monitor/id6740828994) | 5.0 (1) | Free | Utilities |
| [USB Camera](https://appshunter.io/ios/app/usb-camera/id6449986555) | 2.7 (10) | Free | Utilities |
| [HDMI Monitor - Video Capture](https://appshunter.io/ios/app/hdmi-monitor-video-capture/id6467666216) | 3.1 (123) | Free | Utilities |
| [中華電信行動預付卡](https://appshunter.io/ios/app/id985038485) | 3.7 (58) | Free | Utilities |

## More apps by KYOUNG HOON SONG

- [VERMILION: Three Kingdoms](https://appshunter.io/ios/app/vermilion-three-kingdoms/id6795466218)
- [Stronger Even in Death](https://appshunter.io/ios/app/stronger-even-in-death/id6809766795)

All apps by KYOUNG HOON SONG: https://appshunter.io/developer/6795466220

---

*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 2026-10-09.*