---
title: "YoonSTT: Fast STT Converter - Reviews, Revenue and Downloads in South Korea | Apple App Store"
description: "Create accurate subtitles from video or audio with ease.  This app is a SwiftUI-based iOS subtitle and translation tool designed for creators, students, and professionals who need fast, clean, and edi"
---

# YoonSTT: Fast STT Converter — South Korea

![YoonSTT App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/35/0e/6a/350e6a36-5204-40ca-cfdb-ce521c8922e3/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Dohyeon Kim](https://apptail.io/developer/dohyeon-kim-mGpyY)
**Category:** Photo Video
**Rating:** 5.0/5 (2 ratings)
**Price:** 4,400.00 ￦
**Bundle ID:** com.google.YoonSTT
**Store:** Apple App Store
**Country:** South Korea
**Version:** 1.2 (released 2026-02-03)
**Original Release:** 2026-01-29

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/kr/app/app/id6757389068)
**AppTail Page:** [https://apptail.io/app/yoonstt-fast-stt-converter-uGpy/south-korea](https://apptail.io/app/yoonstt-fast-stt-converter-uGpy/south-korea)

## YoonSTT Description
Create accurate subtitles from video or audio with ease.

This app is a SwiftUI-based iOS subtitle and translation tool designed for creators, students, and professionals who need fast, clean, and editable captions.

---

**From media to subtitles — simple and flexible**

• Import videos directly from your Photos library  
• Or load audio files such as Voice Memos  
• Automatically extract audio from video  
• Choose your speech recognition language  
• Transcribe using Apple’s on-device speech recognition  

Once transcription is complete, your session is saved so you can edit, translate, and export anytime.

---

**Translate only when you want**

• Original transcription is generated first  
• Select a target language and translate on demand  
• View original text and translation side by side  
• Keep full control over when and how translation happens  

---

**Smart subtitle generation**

Transcribed segments are intelligently grouped into readable subtitle units:
• Sentence boundaries and punctuation awareness  
• Pause-based segmentation  
• Optimal subtitle duration (1–3.5 seconds)  
• Two-line layout with balanced line breaks  
• Export-ready formatting for professional use  

Supported formats:
• SRT  
• VTT  

---

**Edit, copy, and share**

• Edit original text freely  
• Copy subtitles to clipboard  
• Share subtitle files directly  
• Choose between Original, Translation, or Subtitles views  

---

**Designed for clarity**

• Clean white background with black text  
• Liquid-glass inspired UI containers  
• Smooth splash and transition animations  
• Portrait-only layout for focused editing  

---

Whether you’re preparing subtitles for social media, interviews, lectures, or multilingual content, this app helps you go from media to subtitles — quickly and clearly.

Download and start turning speech into subtitles today.

## YoonSTT Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/88/b9/2f/88b92f1a-4b55-9eee-b23e-e1ed30275177/YoonSTT_011.jpg/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/d1/07/53/d107538a-760c-910e-8eb4-91e136621240/YoonSTT_041.jpg/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b2/d1/8f/b2d18fb5-66c9-68bd-abde-983a5d8f5552/YoonSTT_031.jpg/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/36/7a/41/367a4148-6703-943c-7b4d-fc31a080bf69/YoonSTT_051.jpg/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c7/f6/d8/c7f6d841-3549-97b0-ed39-5f6f8286cbd9/YoonSTT_021.jpg/1284x2778.png)

## YoonSTT Rating Breakdown in South Korea
- 5 stars: 2 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)







---

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