Chat your way to fluency
Have natural conversations with AI friends from around the world and pick up new words along the way
HiCoCo
Chat with AI friends around the world. Pick up new languages along the way.
No flashcards, no drills. Just natural conversations with 20+ AI friends from different countries.
20+ AI friends Phoneme-level feedback Offline-ready
Word Card
companion
n. a friend who stays with you
Tap any word
See a word you don't know? Tap it for instant definitions, pronunciation, and examples
Pronunciation feedback
AI analyzes your pronunciation down to each sound, showing exactly what to improve
Natural Conversation
Just chat. The rest follows.
Open HiCoCo and it feels like a messaging app. 20+ AI friends from around the world are waiting to chat: Sarah from New York, Yuki from Tokyo, Mika from Berlin... Find someone you click with and start talking.
Tip: Stick with 2 or 3 AI friends for a few days to build rhythm fast.
Natural Conversation 01
Message list
HiCoCo Low-Pressure Speaking
Stuck? AI helps you speak up
Don't know what to say? No worries. AI gives you gentle hints when you need them, helping you speak your very first sentence.
Tip: Read the hint, then rewrite it in your own words before sending.
Low-Pressure Speaking 02
Reply assist
HiCoCo
Invisible Teaching
AI friends teach you — without you noticing
Your AI friends remember words and grammar you struggle with, then weave them naturally into conversation — so you learn without realizing it.
Tip: When a weak word comes back, try using it immediately in your reply.
Invisible Teaching 03
Weak-word loop
HiCoCo
Tap To Understand
Tap any word. Works offline too.
See a word you don't know? Tap it for instant definitions, pronunciation, and examples. Built-in offline dictionary works without internet.
Tip: Pay more attention to the example sentence than the translation.
Tap To Understand 04
Offline lookup
HiCoCo Pronunciation Feedback
See exactly where to improve
Practice speaking like sending a voice message. AI analyzes your pronunciation down to each sound, showing you exactly what to improve.
Tip: Fix one recurring sound first before chasing overall fluency.
Pronunciation Feedback 05
Phoneme feedback
HiCoCo Personality-Led Learning
20+ AI friends from around the world
Americans, Japanese, British, Brazilians... Each AI friend has a unique personality, native language, and story. Find someone you click with — the more you chat, the closer you get.
Tip: Choose AI friends by interest, not by difficulty, if you want better retention.
Personality-Led Learning 06
Find your match
HiCoCo
Visible Progress
CoCo tracks your progress
CoCo sends you regular reports: how many chats, new words learned, pronunciation improvements. See your progress clearly.
Tip: Review your weekly report and pick one thing to reinforce next week.
Visible Progress 07
Growth digest
HiCoCo
Habit Mechanics
Keep your streak alive!
Keep your daily chat streak alive and see how you compare with friends on the leaderboard.
Tip: Set a tiny daily target so your streak is easy to protect.
Habit Mechanics 08
Daily momentum
HiCoCo
Automatic Review
Every word saved automatically
Every word you learn is saved automatically. Science-based spaced repetition handles the review schedule for you.
Tip: When reviewing a word, remember which AI friend used it first.
Automatic Review 09
Spaced review
HiCoCo
Ready Anywhere
Works offline
Chat, look up words, and practice pronunciation — even in airplane mode. Commute, travel, no internet? No problem.
Tip: Open the app once before heading out so offline data is fresh.
Ready Anywhere 010
Offline mode
HiCoCo
Social Proof
HiCoCo
Chat with AI friends around the world
“It feels like a messenger app, not a classroom.”
“This is the first app that makes me want to talk with the world every day.”
“Tap-to-lookup and pronunciation feedback remove so much friction.”
Download
Start chatting with your AI friends
From your first sentence onward, HiCoCo helps turn talking with the world into a natural daily habit.