Otto vs Cool Mate
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Otto
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Otto teaches you a language by immersion, in everything you already do on your phone, at your level from beginner to native. Words in what you read, watch and listen to are swapped into the language you are learning, a few at first and more as you grow. Tap a swapped word and it translates itself; save it and it is yours to practise later. FOR YOU A feed made for you: short videos with woven subtitles, articles, posts, podcasts and books, all at your level. Swipe a card right to like it, left if it is not for you, and the feed learns what you enjoy. Stories from the topics and creators you like sit at the top. WATCH, LISTEN, READ Films and series with woven subtitles. Podcasts woven as they play. Articles and books at your level, with a word bank that grows as you go. THE WEB, AT YOUR LEVEL Open any site or search anything, and the page is woven for you. Pause it whenever you want to read as normal. Ads and trackers are blocked as you browse. YOUR LEVEL, IN SECONDS Choose your level on a real page and see exactly how much changes. Change it any time. PRACTISE WHAT YOU SAVE Match games, verb drills, quick judgements and a daily homework plan, built from your own words. Work with a tutor if you have one: they can see your word bank and set what you read. ON APPLE WATCH Follow a book, podcast or film with its swapped words on your wrist, review the words that need work, and save a word you heard by saying it. ELEVEN LANGUAGES Learn Spanish, French, German, Italian, Portuguese, Chinese, Japanese, Korean, Hindi or Arabic from English, English from any of them, and French, Spanish, Italian or Portuguese from one another. Free to use, with Pro and Max plans for more. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Cool Mate
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Ever watched a movie in English and missed half the dialogue? Cool Mate fixes that. We pull the keywords, phrases, and idioms straight from popular TV shows and movies. You learn them first through bite-sized challenges. Then, when you hit play on your favorite show, nothing slips past you. HOW IT WORKS 1. We break down real scenes into the words and phrases that matter 2. You see a word or phrase. Know it? Don't? That's simple. 3. Our AI-powered algorithm, built on the Leitner spaced repetition system, schedules your reviews automatically 4. Words you struggle with come back more often. Words you know get spaced out further. 5. You keep going until every word reaches mastery The result? You stop guessing and start understanding. WHY IT WORKS Traditional apps teach you "the cat is on the table." Real conversations sound nothing like that. Cool Mate teaches you what native speakers actually say, the way they actually say it. Slang, idioms, fast speech, all of it. FEATURES - Real clips from popular entertainment - Word-by-word subtitle breakdowns - AI-powered spaced repetition adapted to your memory - Track your streaks, accuracy, and mastery - Apple Watch companion app - 12 source languages supported Stop missing the good parts. Start understanding all of them. Subscription Plans: - Pro Monthly, $9.99 per month, auto-renewing - Pro Yearly, $49.99 per year, auto-renewing - Pro Lifetime, $99.99 one-time purchase Monthly and Yearly renew automatically unless canceled at least 24 hours before the end of the current period. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yocoolmate.com/privacy
Screenshots
Verdict
The clearest difference is update cadence: Otto at every 4 days against Cool Mate's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Otto sells 6 in-app purchases, starting at $3.99 per month and Cool Mate sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Otto ships an update every 4 days, Cool Mate every 2 weeks. The most recent releases landed on October 28, 2026 and October 9, 2026 respectively.
| Parameter | Otto | Cool Mate |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days โ better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, Mac, Apple Watch | iPhone, iPad, Mac, Apple Watch |
| Requires iOS | 16.0.0 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 174 MB | 84 MB |
| Age rating | 17+ | 12+ |
| Developer | Tom Honey | SARA TORKAMANI |
In-app purchases
Otto
- Otto Pro - Monthly$3.991 Month
- Otto Pro - Yearly$29.991 Year
- 20 Tokens$1.99
- 70 Tokens$4.99
- 180 Tokens$9.99
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- 450 Tokens$24.99
Cool Mate
- Monthly$9.991 Month
- Yearly$49.991 Year
- Lifetime$99.99









