KeyFluent vs Cordia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KeyFluent
Learn a new language effortlessly by integrating language learning directly into your daily messaging. This keyboard translates your typed messages in real-time and incoming messages, offering an immersive, low-pressure way to acquire vocabulary and phrases.
- Translate messages as you type
- Automatic translation of incoming messages
- Translate copied text
- Hear word pronunciations
- Save words to a personal deck
- Vocabulary practice games
- Adaptive keyboard layout
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The average person sends close to 100 messages a day. KeyFluent turns every one of them into a chance to learn a new language. No lessons, no streaks, no extra time carved out of your day. Just type the way you always do, and watch a new language come to life right above your keyboard. TRANSLATE AS YOU TYPE Your message is translated above the keys as you write it, in over 130 languages, from Spanish and French to Japanese, Mandarin, and Hindi. Send it in the new language with one tap, and pick up the words just by seeing them every day. READ AND REPLY IN THEIR LANGUAGE Copy a message you can't read and switch to KeyFluent. The translation is waiting above the keys. Your reply goes out in their language automatically, then the keyboard switches back to your usual language when you're done. TALK FACE TO FACE The new Conversation screen turns your phone into a translator between two people. Each of you speaks, and the other hears and reads it in their own language. Scroll back through the chat anytime and save any line as a flashcard. HEAR EVERY WORD • Play the full translation in natural Google voices • Touch and hold any word to hear it, or slide across a phrase • Slow the pace down to catch every syllable FROM TYPING TO LEARNING Double-tap any translated word to save it, then open the Learning Center when you have a spare minute. • Flashcards for the words you've collected • A Mastery Game that makes practice feel like play • 15 vocabulary packs on themes like Travel, Food, Family, and everyday verbs AUTOCORRECT THAT KEEPS UP • Fixes typos using the words around it, even after you've moved on • Learns how you type, and gets more accurate the more you use it • Splits words that ran together and fixes fast-typing slips • Autocorrect in 17 languages, and it notices which one you're typing • One backspace after a correction brings back exactly what you typed MAKE IT YOURS • 24 themes, plus your own colors for the translation bubble • QWERTY, AZERTY, and QWERTZ layouts • Text shortcuts: type omw and get "on my way," or make your own • A Tap Map that learns where your fingers land and shifts the keys to match YOUR PRIVACY Your typing stays on your device. Autocorrect, predictions, your personal dictionary, and your Tap Map are built and stored on your phone. KeyFluent never logs or sells your keystrokes. Only the text you translate or play is sent to translation and voice services, and it's never used for advertising or tracking. Full Access lets the keyboard reach those services and use haptics. Details are in our Privacy Policy. SUBSCRIPTION Typing and autocorrect are free for everyone. Everything else is free for 7 days, then $3.99 a month, or $39.99 a year with the annual plan. • Payment is charged to your Apple ID when you confirm the purchase. • Your subscription renews automatically unless auto renew is turned off at least 24 hours before the period ends. • Your account is charged within 24 hours before the period ends. • If you start a paid subscription, any unused part of the trial is forfeited. • Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/keyfluent/home
Cordia
Learn a new language as you text. This keyboard translates your English messages word-by-word in real-time, allowing you to see and hear pronunciations. It works offline and prioritizes your privacy by processing all data on-device.
- Live inline translation
- Word meanings and pronunciation
- Reading line for non-Latin scripts
- Translate received messages
- On-device processing for privacy
- Offline functionality
- Progress tracking
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Cordia is a keyboard that teaches you a language while you text. Type your message in English in any app (iMessage, WhatsApp, Snapchat, Instagram) and the translation appears live above the keys, word by word, as you type. Your message still sends in English, so you learn without changing how you talk to people. When you want to send the translation instead, tap it once and it swaps in. WHY CORDIA IS DIFFERENT • Live, inline translation. No separate translate mode, no waiting, no copy-paste. • Word meanings as you type. See what each English word became in the sentence and tap any word to hear it pronounced. • Pinyin, romaji and romanization. Chinese, Japanese, Korean, Russian, Hindi, Thai, Arabic and Ukrainian show a reading line so you can say what you see. • Translate what they sent you. Copy a message you received and tap the clipboard button to read it in English. • Autocorrect that works. Typos get fixed when you hit space, so "dsy" translates as "day". Backspace undoes. • Fully on-device. Cordia uses Apple's built-in translation engine. It works offline and contains no networking code. Nothing you type is ever sent anywhere. • Streaks and progress. Turn on history (off by default, stored only on your phone) to see your streak, words learned, and sentences practiced. LANGUAGES Italian, Spanish, French, German, Portuguese, Japanese, Korean, Chinese (Simplified and Traditional), Arabic, Dutch, Hindi, Indonesian, Polish, Russian, Thai, Turkish, Ukrainian, Vietnamese. FREE AND PAID OPTIONS One language is free forever — you choose which one — with unlimited translations. Cordia Plus adds two more language slots you can swap any time. All Languages is a one-time purchase that unlocks the full set permanently. Paid plans let you switch languages right on the keyboard. PRIVACY No account. No analytics. No servers. The keyboard asks for Full Access only so it can read the settings you choose in the app. It never connects to the internet. Cordia Plus is a monthly auto-renewing subscription billed to your Apple ID. It renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings → your name → Subscriptions. All Languages is billed once to your Apple ID and does not expire. Privacy Policy: https://cordia-keyboard.vercel.app/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Cordia at every 2 days against KeyFluent's every 5 days. On price, rating, review sentiment and ratings volume 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. KeyFluent sells 2 in-app purchases, starting at $3.99 per month and Cordia sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for KeyFluent against 5.0 for Cordia. Both are backed by a comparable volume of ratings — 5 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
KeyFluent ships an update every 5 days, Cordia every 2 days. Both last shipped on October 31, 2026.
| Parameter | KeyFluent | Cordia |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (8 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 | 8 — better |
| Update frequency | Every 5 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 96 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Stephen Alexander | TYLER ANTHONY LUCCHI |
Customer experience
KeyFluent
Cordia
In-app purchases
KeyFluent
- KeyFluent7 Days trial$3.991 Month
- Annual7 Days trial$39.991 Year
Cordia
- Cordia Plus7 Days trial$4.991 Month
- All Languages$29.99









