Qualife vs DuoSub

Qualife turns any video into speaking practice. Shadow a native speaker line by line, hear exactly which words you missed, and keep the vocabulary you just learned — in English, Japanese, Korean, Chinese, Spanish and more. SHADOWING — SPEAK LIKE THE SPEAKER • Shadow mode: speak along with the whole video. No scores, no interruptions. • Practice mode: one sentence at a time, with pronunciation feedback • Word-by-word results show what you said, what you missed, and what you added • Play back the original line and your own voice, one after the other • See your accuracy and your speaking pace against the speaker's own • Choose your timing: pause after each sentence, or speak at the same time as the video • Set your own pace — more room to read ahead when a sentence is full of new words • Sentences you struggled with come back later, automatically • Your recordings stay on your device SHADOW IN ANY LANGUAGE • Works on any video that has captions — English, Japanese, Korean, Chinese, Spanish, French, German and beyond • IPA for English and pinyin for Chinese, right under the line you are saying • A translation into your own language on the same screen LEARN VOCABULARY THAT STICKS • Smart flashcards with spaced repetition, so you review words right before you forget them • Save any word straight from a video, a website, or a photo • Build your own decks or start from curated libraries • Example sentences, IPA, and audio for every word UNDERSTAND ANYTHING IN A TAP • Open real websites in-app and tap any word for an instant translation and definition • Translate text inside photos and screenshots • AI dictionary with clear, contextual explanations — not just word-for-word STRUCTURED COURSES • Bite-sized lessons that build real skills, step by step • Track your progress as you learn LEARN THROUGH PLAY • Fun mini-games that turn practice into a daily habit Sessions are short on purpose. About fifteen minutes of shadowing, a few times a week, builds more than one long push. Whether you are preparing for exams, work, or travel, Qualife makes everyday language learning simple, fast, and enjoyable. Start free today.

Watch YouTube in two languages at once. DuoSub plays a video with two subtitle lines: the original line, and your own language right underneath it. Nothing to download, no subtitle files to hunt for, no settings to fight with. HOW IT WORKS 1. Bring in a video — paste a link, share it from the YouTube app, or find it in the built-in Browse tab. 2. Choose the language for the second line. 3. Press play. Both lines run with the video, word by word. WHAT YOU GET • Dual subtitles — the original on top, your translation below, always in sync. • 90 languages for the translated line, from Vietnamese, Spanish and Japanese to Arabic, Hindi and Ukrainian. • Karaoke highlighting that frames the word being spoken, so you never lose your place. • A full transcript that scrolls along with the video — tap any line to jump to that moment. • Your subtitles, your way: text size, a colour for each line, karaoke on or off — adjustable without leaving fullscreen. • A real player: drag the seek bar, tap to pause, swipe for brightness and volume, hold for 2x, lock the screen. • A library that keeps every video you add, with its subtitles saved on your device so replays start instantly. • The app itself in 12 languages, switchable any time without a restart. WHO IT'S FOR People learning a language from real videos instead of textbook audio. Listeners who want an hour-long podcast to stop being a wall of sound. Students following courses recorded in another language. Anyone reading foreign news and documentaries as they play. DUOSUB PRO Free: translate up to 3 new videos a day. Videos that have already been translated open for free and don't use up your daily count. Pro: unlimited translation, every language, every day. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://duosub-1ae27.web.app/privacy GOOD TO KNOW DuoSub works with videos that have captions available. Videos play through YouTube's own player — DuoSub does not download or store video. DuoSub is an independent app and is not affiliated with, endorsed by or sponsored by YouTube or Google.