HearBrew vs CastMind

HearBrew — Master English Listening, One Sentence at a Time Struggling to understand native English speakers? The problem isn't your vocabulary — it's that real speech comes in long, fast, complex sentences. HearBrew breaks YouTube videos into 15–30 second clips, each containing one natural sentence, so you can train your ear on real-world speech at your own pace. Swipe through clips like TikTok — a familiar, effortless way to learn during any spare moment: commuting, waiting in line, or before bed. How it works: • AI splits videos into bite-sized clips — one sentence per clip, the perfect unit for ear training • Set your target comprehension (e.g. 70%) — the app finds clips that challenge you just enough • Choose how many times each clip repeats — listen 2x, 3x, or more until you catch every word • Toggle subtitles on/off — start with subtitles, then try pure listening • Tap any word for pronunciation, definition, and translation AI that knows your level: • Every clip is difficulty-scored — from simple greetings to dense news commentary • The recommendation engine adapts to your listening ability in real time • Pick your interests: sitcoms, TED talks, news, podcasts, documentaries • Each session feels just right — not too easy, not overwhelming Track your progress: • Study streaks and daily heatmap • Vocabulary book of every word you've looked up • Watch history and favorites Submit your own videos: • Paste any YouTube URL — we process it into learning clips with subtitles, vocabulary highlights, and difficulty scoring • Free users get 100 clips/month, Pro members get 300+ Safety & content: • All video playback uses YouTube's official embedded player — no videos are downloaded or stored • Report inappropriate content or block users directly from the app Start learning immediately with no account required. Sign in anytime to sync your progress across devices. You can delete your account at any time from Profile settings. Pro features: • 300+ processed clips per month • Auto-play next clip for continuous immersion • Hide words you already know • Priority processing for your submissions HearBrew is designed for learners at any level — from beginner to advanced. Content is automatically matched to your ability so every session feels just right. Subscriptions: • Monthly Pro — $3.49/month • Annual Pro — $29.99/year (save 29%) • Lifetime — $59.99 one-time Or top up your clip balance with permanent credits that never expire. Subscription auto-renews unless cancelled 24h before the end of the current period. Manage or cancel in Settings > Apple ID > Subscriptions. Terms: https://hearbrew.com/terms Privacy: https://hearbrew.com/privacy

Want to understand someone? CastMind gathers their interviews from wherever they are, so you can follow them and publish what you took away. To understand Karpathy today, you dig through Lex for one episode, Dwarkesh for another, and YouTube for his own long videos. Podcast apps can't help — they subscribe by show, so search gives you shows, not the episode he was on. CastMind works by person. — What it does for you — · Gather one person Tap + on Listen and search podcast episodes, Bilibili, and YouTube by name. Select a batch, keep them in one collection, and put them in your own order. The collection is pinned to Deep Dive on Home. · Tap a line to understand it When an English interview has a transcript, tap a line to understand it on the spot, or turn on bilingual view. If the show publishes its own transcript, it's fetched when you open the episode; YouTube and Bilibili can pull platform subtitles. · A transcript even when there isn't one Download a podcast episode and make a transcript on this iPhone. Audio never leaves the device. I ran a 3-hour-32-minute Chinese interview (210 MB) on iPhone 15 Pro Max — about 6 minutes to a full draft. It's machine dictation, so expect typos; the bar stays labeled unproofread. · Traces that leave themselves Mark a moment from the lock screen, Control Center, Siri, or your headphones without opening the app. Lines you tapped and moments you marked land in the same place. · Write a teardown you'll sign What you marked is laid out in the episode's teardown. You only write your own take. One Markdown file per episode, ready for X or your blog. · Pick up where you left off Open and continue from your last position. Each show remembers its speed; Smart Speed skips silences and Voice Boost lifts voices. Bind shows you follow to a smart collection and new episodes land there automatically. · On runs, commutes, and in the car Lock screen, Control Center, and headphone controls are ready. In the car, open CastMind on CarPlay to continue a podcast, open a show, or play a collection. · Offline first Original text, marks, and notes are readable and editable offline. No account. Nothing uploaded to the cloud. — What we deliberately don't do — No recommendation feed, charts, or people directory — you search for the person you already care about; we won't scroll content at you. No pronunciation scoring, no flashcards, and AI never writes your take for you. castmind.ai is CastMind's website.