Gibberfish vs Know
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gibberfish
Learn languages through immersion by reading stories, watching videos, and importing articles. Tap any word for instant translation and save it for spaced repetition review. Practice output with guided writing exercises and track your progress.
- Immersive reading with tap-to-translate
- YouTube subtitle integration
- Web article import
- Spaced repetition review
- Output practice for writing
- Progress tracking and achievements
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Grow Fluency — Learn Languages Through Immersion Most language apps teach you words in isolation. Grow Fluency puts them in context — where they actually stick. Read a story. Watch a YouTube video. Import an article you actually care about. Tap any word you don't recognize to see its translation instantly. Save it, and Grow Fluency brings it back at the right moment using spaced repetition — so you review words just before you'd forget them. It's the same simple loop everywhere: encounter a word in something real, tap it, keep it. Read Short stories generated around your own vocabulary, at your level. Tap any word for an instant translation. Watch Paste any YouTube link and watch with your target language's subtitles live in the app. Miss something? Hit translate-back — the video freezes, you hear the last few seconds explained in your native language, then it replays them in the original. Tap any word in the subtitles to save it straight to your collection. Import Bring in articles from the web by pasting a link, or drop in your own text. Read anything you want with tap-to-translate on every word. Practice Output Practice turns recognition into real production — write a journal entry using the words you've learned and get it corrected line by line. Review Smart spaced repetition schedules every saved word automatically. Track streaks, watch your words move from "learning" to "mastered." Also included: 12 languages, including Egyptian Arabic, Lebanese Arabic, Mandarin, Japanese, and Korean A tutor for any language question, any time Anki deck import — bring your existing decks with you Progress tracking and achievements Learning a language doesn't have to mean grinding through flashcard decks. Grow Fluency turns the things you'd already read and watch into the lesson. Start reading. Start watching. Start learning. Grow Fluency Pro is an auto-renewing subscription, available monthly ($6.99/month) or annually ($59.99/year). Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your device's Account Settings. Privacy Policy: https://grow-fluency.notion.site/Grow-Fluency-Privacy-Policy-35a73982a33180868652e9e43a1ccf66?source=copy_link Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Know
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Get genuinely good at trivia — the way quiz-show contestants actually study. Know-It-All drills the evergreen general-knowledge canon across seventeen categories, so the right answer becomes second nature: • Geography — world & U.S. capitals, flags, countries, rivers & lakes • History — U.S. presidents, world events, ancient civilizations • Literature — authors, famous first lines, Shakespeare • Science & Nature — the elements, the human body, astronomy • Visual Arts — artists & paintings, art movements, architecture • Music — classical composers, hit songs, musicals & Broadway • Film & TV — name the movie, Best Picture winners, TV characters • Religion & Myth — myths & legends, world religions, Bible figures • Wordplay & Language — word roots, foreign phrases, and "Before & After" • Food & Drink — world cuisines, cocktails & spirits, cooking terms • Sports — name the sport, players per side, Olympic host cities • Politics & Government — world leaders, the Constitution, U.S. civics • Business & Brands — company founders, slogans, world currencies • Animal Kingdom — animal records, collective nouns, baby animals • Pop Culture & Awards — major awards, famous firsts, world records • Math & Numbers — Roman numerals, shapes & sides, math terms • Technology & Inventions — inventors, tech acronyms, who made it What makes it stick: • The "why" on every answer — learn the fact, not just whether you were right. • Multiple choice or hands-free self-test mode — recall the answer, reveal, and score yourself, flashcard style. • A transparent proficiency score that tracks how sharp you're getting. • Three difficulty tiers, from Beginner to Advanced. • Fast, clean rounds — perfect for warming up before quiz night. No ads. No subscription. Works fully offline. Just practice. Know-It-All is part of GameSmarts — clean, honest trainers with no ads and no subscriptions.
Screenshots
Verdict
The clearest difference is in-app purchases: Know at none against Gibberfish's 4. Gibberfish's advantage is device support (4 vs 2). On price, update cadence, ads and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Gibberfish sells 4 in-app purchases, starting at $4.99 per month. Know asks for nothing beyond the download.
Gibberfish ships an update every 5 days, Know every 6 days. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.
| Parameter | Gibberfish | Know |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 days — better | Every 6 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 76 MB | 4 MB |
| Age rating | 4+ | 12+ |
| Developer | Josiah Reed | Bill Toner |
In-app purchases
Gibberfish
- Gibberfish Pro7 Days trial$4.991 Month
- Gibberfish Pro Monthly$6.991 Month
- Gibberfish Pro$39.991 Year
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- Gibberfish Pro Annual$59.991 Year
Know
No in-app purchases









