Comparison

Lingo Chill vs Cosuki

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lingo Chill

Features
Read full description

Lingo Chill – Learn English and 10+ Other Languages Through Videos You Love Learn English and other languages in a more natural and enjoyable way with real videos you love. Lingo Chill helps you understand content in context, practice listening and speaking, build your vocabulary, and chat with AI — all in one app. >> Learn English and 10+ Other Languages Whether you want to improve your English or start learning a new language, Lingo Chill is here to support you. Choose from 10+ popular languages, including English, French, German, Italian, Portuguese, Spanish, Chinese, Korean, Japanese, and Russian. Your native language is supported too, making it easier to learn with bilingual subtitles and translations in the language you understand best. >> Learn from Any Video You Love Turn the videos you love into your own language lessons. Explore handpicked learning videos on the Home page, search directly on YouTube, or simply paste the link to any video you want to learn from. Learn through interviews, podcasts, stories, everyday conversations, educational videos, and more. >> Understand Videos with Bilingual Subtitles Watch videos with bilingual subtitles in your target language and native language, so you can follow the original dialogue while understanding what people are saying in real context without constantly switching to a translation app. >> Understand Any Word with One Tap Don't know a word? Just tap it. The One-Tap Dictionary lets you explore meanings, usage, examples, and more without leaving the video. Found a word you want to remember? Save it to your personal vocabulary collection and review it later with Spaced Repetition. >> Practice Speaking with Shadowing Improve your pronunciation by listening to and repeating after native speakers, one sentence at a time. Lingo Chill helps you check how accurately you pronounced each sentence, so you can gradually develop more natural pronunciation, better rhythm, and greater confidence when speaking. >> Train Your Listening with Dictation Think you heard everything correctly? Put yourself to the test by listening to a sentence and typing what you hear. Lingo Chill checks your answer and helps you spot what you missed, improving your listening, spelling, and sentence recognition. >> Learn Actively with Cloze Quizzes Don't just watch — test yourself. Complete missing words, answer questions, and check how well you understand each video. >> Chat with AI About What You Watch Turn every video into a conversation. Chat with AI by text or voice, ask questions, discuss ideas, practice new vocabulary, and express your opinions in the language you're learning. >> Remember Vocabulary with Spaced Repetition Review saved words at the right time, so you don't just learn new vocabulary — you actually remember and use it. >> Practice Your Own Way Learning doesn't end when the video ends. Review what you've learned and keep practicing with activities that help strengthen your language skills. >> Learn Together with the Community Learning a language is more enjoyable when you have others on the journey with you. Share your progress, experiences, discoveries, and challenges with other learners. Stay motivated, connect, and improve together. >> Track Your Progress See how far you've come by tracking the videos you've watched, the time you've spent learning, the words you've learned, your daily learning streak, and your overall language-learning progress. You can also explore your personal skill profile across Comprehension, Listening, Speaking, and Vocabulary and see how your abilities develop over time. Watch. Understand. Practice. Remember. Speak. Download Lingo Chill and turn the videos you love into your own way to learn English and other languages. --- Connect with us: Email: support@lingochill.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Cosuki

Read full description

Learn Algebra. Actually Understand It. Cosuki is an algebra learning app built around one simple idea: understanding comes before memorization. Learn the concept. Follow a worked example. Practice it yourself. Then prove you’ve mastered it. From variables and expressions to the Grand Trial, Cosuki takes you through 10 carefully structured chapters covering inequalities, coordinate geometry, systems of equations, exponents, polynomials, quadratics, functions, and more. LEARN WITH PURPOSE Every chapter starts with clear concept guides that explain the rule, demonstrate a worked problem, and walk you through the reasoning behind every step. Then it’s your turn. Complete practice missions, build confidence, and finish with mastery tests designed to make sure the concept actually stuck. Each chapter includes 22 missions and 110 questions. When you make a mistake, Cosuki doesn’t just mark it wrong. It explains what happened and helps you understand the solution. When you’re stuck, hints help you move forward without simply giving away the answer. EARN YOUR PROGRESS Learning is the journey. The treasures are the proof. Complete chapters to collect 10 hand-painted rewards, from the Scholar Headband to the Grand Trial Armor. Equip your favorites and make your journey your own. HEARTS THAT ENCOURAGE CARE You start with five hearts. A wrong answer costs one, and hearts replenish automatically. They aren't here to punish mistakes. They’re a small reminder to slow down, read carefully, and think before you answer. PRIVATE BY DESIGN Cosuki is built to respect your privacy from the ground up. No ads. No subscriptions. No account. No sign-up. No email address. No analytics. No tracking. No advertising identifiers. There is no Cosuki server collecting your personal information. Your progress stays on your device and is backed up through your own Apple account. Reinstall the app without losing your progress. And because your lessons are stored locally, Cosuki works completely offline. Your learning belongs to you. START FOR FREE Chapters 1 and 2 are completely free. That’s 44 missions and 220 questions with no time limit, no trial, and no credit card required. When you’re ready for the full journey, Cosuki Plus unlocks the remaining eight chapters with a one-time $4.99 purchase COSUKI PLUS • All 10 chapters • 7 hearts instead of 5 • 3 hints per mission instead of 1 • One-time purchase • No subscription • No recurring charges Buy it once. Keep it forever. No subscriptions. No renewals. No surprises. THE GRAND TRIAL AWAITS Start with the fundamentals. Build your understanding one idea at a time. Master the concepts. Then prove how far you’ve come. Welcome to Cosuki.

Screenshots

Lingo Chill4 screens
Cosuki4 screens

Verdict

The call

The clearest difference is iOS requirement: Cosuki at 13.0 against Lingo Chill's 16.0. On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lingo Chill sells 3 in-app purchases, starting at $7.99 per month and Cosuki sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Lingo Chill ships an update every 4 days, Cosuki weekly. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

Scorecard1 real difference · 5 level
Lingo Chill versus Cosuki: the parameters behind the verdict, then further details
ParameterLingo ChillCosuki
PriceFreeFree
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.013.0 — better
Further details — not scored
Size60 MB40 MB
Age rating4+4+
DeveloperFIDU SOLUTIONS COMPANY LIMITEDKhuselbayar Enkhmunkh

In-app purchases

3 purchases

Lingo Chill

Subscriptions3
  • Premium Monthly$7.991 Month
  • Premium 3 Months$19.993 Months
  • Premium Yearly$39.991 Year
1 purchases

Cosuki

One-time1
  • Cosuki Plus$4.99

Questions

Is Lingo Chill free?
Lingo Chill is free to download, with in-app purchases available.
Is Cosuki free?
Cosuki is free to download, with in-app purchases available.
Do Lingo Chill or Cosuki have ads?
Neither Lingo Chill nor Cosuki shows ads.
Which is updated more often, Lingo Chill or Cosuki?
Lingo Chill ships an update every 4 days, and Cosuki weekly. Most recently, Lingo Chill was updated on October 16, 2026 and Cosuki on October 9, 2026.

Other comparisons