EchoNative vs Centum

EchoNative — Turn the podcasts you already listen to into a deep-listening practice room. For upper-intermediate and advanced English learners who want to truly understand the podcasts they listen to — not just follow along. Import a podcast RSS feed, Apple Podcasts link, or local audio file you have the right to listen to. EchoNative auto-generates word-perfect subtitles powered by OpenAI Whisper, so you stop guessing and start studying. WHAT'S INSIDE • AI Subtitles — Whisper-grade transcripts with word-level timestamps. Tap a word to hear it again. • Sentence Breakdown — Tap any sentence for an instant GPT-4o analysis: literal translation, idiomatic translation, syntax structure, and the rhetorical device behind it. • Instant Word Lookup — Tap any word for a clean dictionary card. No browser jumping, no copy-paste. • Shadowing & Scoring — Record yourself shadowing a sentence. Get an instant pronunciation + fluency score from on-device + AI evaluation. • Smart Vocabulary — Save words and phrases you actually encounter. SM-2 spaced repetition surfaces them again at the perfect moment. • Phrase Discovery — Run a one-tap scan on any episode to surface the idioms and collocations hiding in the transcript. Add them to your vocabulary with one more tap. • Anki Export — Take your vocab anywhere. One tap exports a clean .csv ready for Anki. WHO IT'S FOR You can already follow most native English content, but you want to: - Notice what slips past you in real-time listening - Build a vocabulary of words and phrases that actually matter to you (not someone else's textbook) - Practice shadowing without external apps or paper If you're at CEFR B2/C1 trying to push to C2, this is built for you. PRIVACY-FIRST ARCHITECTURE • Your shadowing recordings stay on your device. Always. • Only the audio you ask us to transcribe is sent to OpenAI. • No analytics, ads, or behavioral tracking inside the app. • Read our full privacy policy: https://echonative.com/privacy SUBSCRIPTION TERMS EchoNative Pro unlocks all AI features (subtitles, sentence analysis, word lookup, shadowing scoring, unlimited vocabulary). • Monthly: $9.99 USD / month • Yearly: $59.99 USD / year (save ~50%) • Both plans include a 7-day free trial for new subscribers • Subscriptions auto-renew. Cancel anytime in iOS Settings → Apple ID → Subscriptions, at least 24 hours before the trial or current period ends. Local pricing in other regions follows Apple's standard pricing matrix. Privacy Policy: https://echonative.com/privacy Terms of Service: https://echonative.com/terms Support: hello@echonative.com

Every language app hands you more content. Centum hands you one. Centum is a tool for a single method: pick one film you love, and watch it a hundred times — until the lines live in your mouth instead of your notebook. THE FIVE STAGES 1 · Watch it once with no subtitles at all. Just enjoy it. You'll miss most of it, and that's the point. 2 · Watch it with subtitles in your own language. Now you know the story cold. 3 · Watch it with English subtitles. Sound starts snapping onto spelling. 4 · Go line by line. Loop a single sentence, say it out loud, record yourself, compare. Stay on a line until it's yours. 5 · Then watch — or just listen — for the remaining laps. Screen off, on the train, doing the dishes. This is where the fluency actually gets built. WHAT THE APP DOES · Sentence looping — tap any line to loop it, frame-accurate, no drift. · Shadow recording — hear the original, say it, hear yourself back, both drawn side by side as waveforms. · A lap count you can't fake — a lap only counts when the playhead really went through: 1.5x speed or slower, 90% of the film or more, no scrubbing your way to the end. Dragging the slider earns you nothing. · A hundred squares — one per lap, shaded by the stage you were in. Watching your film fill up is the whole point of the thing. · Bilingual subtitles aligned by timecode, not by line number — two subtitle files are almost never from the same release, and off-by-one alignment ruins everything. · Background listening with lock screen controls. Stage five is mostly ears. · Notes and per-sentence mastery, so you can see which lines still aren't yours. · Eight languages: English, 简体中文, 繁體中文, 日本語, 한국어, Español, Français, Deutsch. WHAT YOU NEED TO BRING Centum ships with no films and no subtitles. It is a tool, not a library. You bring: · A video file in MP4 or MOV (H.264 or HEVC). MKV and AVI cannot be played on iOS — this is a system limitation, not a setting. · A subtitle file (.srt or .ass). One in English, plus optionally one in your own language for stage two. Without any subtitles you can still watch the film and count laps, but stages two through four need them. Import your files through the Files app. PRIVACY No account. No sign-up. Nothing to log in to. Your films, your notes, your recordings and your lap count live in this device's sandbox and go nowhere. Delete the app and all of it is gone with it. — The method is 장동완's 100LS. The app is just the tool that makes it survivable. Questions or ideas: business@zhidun-ai.com