SubLater · Korean/English Dual Subtitles, Dictation & Listening Practice

Korean/English dual subtitles shown just after you hear each line: subtitle delay for listening practice. Loop a line, type it back.

Korean/English dual subtitles. Hear it first, read it after. SubLater delays subtitles (or hides them until you press a key), so you actually train your listening instead of reading along. The delay is on purpose, and you can turn it off any time. Two training modes — Fixed delay (2.0s on/off on the free tier; Pro adjusts it 0–5s, set 0 for real-time dual subs) or Reveal mode (Pro; press S to check). Line-by-line tools — A/D jump between lines, R replays the line, L loops it (on YouTube: press R twice), P auto-pauses at the end of each line. Dual-language subtitles — The translation appears below, in sync (YouTube can auto-translate; other sites use the subtitle tracks the player already offers). Learning Korean? Turn on Korean subtitles and English appears below (great for K-dramas). Stuck on a word? Just hover (NEW) — Instant definitions for 34,000+ English words, fully on-device. Detects phrasal verbs and idioms ("look it up", "be able to"); the phrasal-verb & idiom notes are Pro. AI context notes explain why the word means what it means in this scene, powered by Chrome's built-in on-device AI (supported browsers). Note: definitions and phrasal-verb notes are written in Korean — this feature is built for Korean speakers learning English. AI context notes are in Korean on Korean-language browsers, in English otherwise. Prove you heard it (NEW) — Dictation (W): type what you heard and get instant scoring, two-stage hints, 0.7x slow replay, and a fanfare at 90+. Ladder replay (G, Pro): re-listen to one line in three steps — no subs, target language only, then translation. Missed lines are auto-collected for review (V) and Anki export (Pro). Full 14-day trial, free forever after — The app never locks you out. Subtitle delay (2.0s, on or off), dual subs, line navigation, auto-pause, hover definitions, and linking underlines stay free forever (dictation: 10/day, AI explanations: 20/day, 50 saved lines). Pro ($8.99/mo or $49.99/yr): adjustable delay (0–5s), Reveal mode, sound line, unlimited dictation and AI explanations, 5,000 saved lines, Anki export, phrasal-verb & idiom notes, ladder replay. Works on: Netflix, Coupang Play, Disney+, YouTube (with auto-translation), Viki. Plus: subtitle size control, mouse control bar, IME-independent hotkeys (press / while watching to see them all). Which languages? SubLater was built for Korean speakers learning English, and it now works the other way round too. Before you install, here is exactly what you get: · Any subtitle language — subtitle delay, Reveal mode (Pro), line navigation (A/D/R/L), auto-pause, saved lines. · Korean subtitles — hover a word for its English meaning and how it actually sounds, with a sound-based romanization. The sound line (Pro) romanizes the whole line the way it is spoken. · English subtitles — hover definitions, phrasal-verb notes, linking underlines and the sound line are written in Korean; that part is made for Korean speakers learning English. · Dual subtitles pair your subtitle track with a Korean one — or with English if your subtitles are Korean. Other pairings (for example Japanese + English) are not supported yet, and the second line will not appear if the title has no Korean track. · Dictation scoring supports English and Korean only. No viewing data is ever sent to us or anyone else. Subtitle text and saved lines never leave your device. The one thing that does leave your device is the email address you enter to unlock Pro — and only if you enter one. It is used solely to check whether that address has an active subscription, and we store it on no server of ours (it stays on your device until you disconnect it). If you never enter an email, SubLater never contacts our server or any third party. The only other requests it makes are to the streaming service you are already watching, to load that service's own subtitle files. When you uninstall, Chrome opens our short survey page; its address carries a few coarse values (language, version, day counts) that cannot identify you — see the privacy policy. SubLater is an independent product, not affiliated with Netflix, Coupang Play, Disney+, YouTube, or Viki. Each service requires your own subscription. ――――――――――――――――――― v0.19.14 update [Fixed] · Coupang Play: after replaying a line in dictation, the translation line could slip one line behind and show the previous line's translation ――――――――――――――――――― v0.19.15 update [Try it the moment you install] · On the welcome page that opens after install, "Try it now on YouTube" opens a TED talk with English subtitles already on — no sign-in or subscription needed · No need to pick a training style first. You start in fixed-delay mode and can switch anytime with Q while watching · The welcome page now also says the core features stay free after the 14-day trial ――――――――――――――――――― v0.19.16 update [Fixed] · Disney+ and similar: after replaying a line (R), jumping between lines or a big seek, the translation line could drift to another line's translation [New] · Linking marks now show as one rounded underline under each group of words that run together, instead of dotted lines broken at every space · Z key: if the translation line doesn't match the line above, press Z to re-sync it (on iPad: "Re-sync translation line" in the ⋯ menu) · The first time a translation line appears, a quick tip tells you about Z ――――――――――――――――――― v0.19.17 update [Changed] · If your subtitles are off, SubLater tells you sooner — when dialogue plays but no subtitles show, a tip asks you to turn on subtitles in the language you're learning, in about 20 seconds · On YouTube, the tip also shows how to switch captions to the right language (⚙ Settings → Subtitles/CC) · On iPhone and iPad, the welcome page now lists only the sites that work on that device [Fixed] · The Korean-subtitle tip told you to turn on dual subtitles (T), which actually turned off the translation line that was already on ――――――――――――――――――― v0.19.18 update [Changed] · The rating prompt now also has "Tell us what's missing" — if something isn't working for you, you can tell us why · The rating prompt now appears after 5 days of use (was 3) ――――――――――――――――――― v0.19.19 update [Changed] · If you had YouTube or Netflix open before installing, the welcome page now tells you and reloads that tab with one click so SubLater works right away · The "No subtitles yet?" tip now shows at most twice (it used to show on every video) · During the trial, the popup now lists what stays free after the trial ends · New to Korean? The welcome page has a Korean example clip · The example video now starts right before the speaking begins [Fixed] · Days with nothing but ad captions are no longer counted as days of use ――――――――――――――――――― v0.19.20 update [Changed] · Added 106 common phrasal verbs to the hover dictionary (go through, wake up, come back, depend on, and more) · The AI context explanation now starts by naming what it explains — if the word is part of a phrasal verb (going through → go through), it explains the whole phrase [Fixed] · Asterisks (**) no longer show up in AI context explanations · Fewer phrasal-verb meanings attached where there is no phrasal verb (e.g. "got a back injury" no longer shows "get back") ――――――――――――――――――― v0.19.21 update [Changed] · Added 244 more phrasal verbs to the hover dictionary (tell apart, put together, come off, keep up with, and more) · Checked against 212,000 example sentences so phrasal-verb meanings don't show up where there is no phrasal verb ――――――――――――――――――― v0.19.22 update [Changed] · R (replay), A, D and line loop now act on the line you see on screen — before, they often replayed the next line you were still hearing · Going back to a line you already heard shows its subtitle right away · The subtitle stays visible while a line loops (short lines used to barely show) · With P (pause after each line), the line you just heard is shown at the stop, and R plays it again and stops again · Press R twice quickly (or tap ↺ twice) to keep looping that line · The on-screen bar now has ↺ Replay (R) and ⏸ Pause per line (P) buttons · On YouTube, the L key goes back to YouTube (forward 10 s) — press R twice to loop a line [Fixed] · On Netflix and Disney+, re-syncing the translation line (Z) no longer drops a line or two or shifts the translation by one line ――――――――――――――――――― v0.19.23 update [Changed] · On the free plan you can now switch the 2.0 s subtitle delay off and back on — the "Off" and "On" buttons in the popup, or − (off) and + (on) while watching · Fine-tuning the delay in 0.5 s steps stays a Pro feature — the delay you used with Pro is kept and comes back when you subscribe again ――――――――――――――――――― v0.19.24 update [Changed] · If another subtitle extension (like Language Reactor) is showing its captions on top of SubLater's, SubLater now tells you once that pressing X hides them ――――――――――――――――――― v0.19.25 update [Changed] · The name and short description now say it plainly: Korean/English dual subtitles. No feature changes