Ten features built around one outcome: making you want to keep speaking
The homepage shows the rhythm. This page shows the system. Each feature exists to make cross-language conversation more natural, lower-pressure, and easier to sustain.
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.
HiCoCo hides cross-language connection inside a familiar chat experience. You open the app and see living conversations, not a course dashboard.
Each AI friend has a stable voice, personality, and set of interests, so practice feels relational instead of instructional.
That lowers the emotional barrier to speaking, especially for people who dislike traditional language study flows.
Message list
HiCoCo
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.
The hardest part for beginners is often replying, not understanding. HiCoCo steps in with soft suggestions when you freeze.
These hints are not rigid templates. They are just enough to help you cross the first-sentence barrier.
That turns 'I don't know what to say' from a dead end into a moment of guided momentum.
Reply assist
HiCoCo
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.
AI friends remember the words and grammar you keep missing, then bring them back naturally in future chats.
Instead of drilling isolated items, the app repeats them in meaningful context.
You absorb the language through repeated noticing, understanding, and reuse.
Weak-word loop
HiCoCo
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.
You never need to leave the conversation to look something up. Any unfamiliar word can be opened inline.
The word card shows definition, pronunciation, and examples so you understand how the word works in context.
With offline dictionary support, quick lookup stays available on commutes and trips.
Offline lookup
HiCoCo
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.
Speaking practice works like sending a voice message, not entering a separate training mode.
Feedback goes down to the phoneme level, so you see exactly which sound needs work instead of getting a vague score.
That makes repetition focused, concrete, and much easier to improve from.
Phoneme feedback
HiCoCo
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.
HiCoCo is not one generic AI. It is a cast of AI friends with different backgrounds and conversational energy.
Different personas unlock different topics, from travel and coffee to photography and tech.
When you genuinely want to continue the conversation, learning becomes the outcome instead of the chore.
Find your match
HiCoCo
CoCo tracks your progress
CoCo sends you regular reports: how many chats, new words learned, pronunciation improvements. See your progress clearly.
CoCo turns scattered chats into a readable picture of your learning momentum.
Reports highlight conversation volume, new vocabulary, pronunciation improvements, and consistency.
That gives you a real sense of progress instead of making you guess whether the habit is working.
Growth digest
HiCoCo
Keep your streak alive!
Keep your daily chat streak alive and see how you compare with friends on the leaderboard.
Lightweight streaks and leaderboards make it easier to keep showing up every day.
The goal is not intense competition. It is a gentle push to protect your rhythm.
For many learners, the biggest win is simply becoming someone who opens the app daily.
Daily momentum
HiCoCo
Every word saved automatically
Every word you learn is saved automatically. Science-based spaced repetition handles the review schedule for you.
Words learned in conversation are saved automatically, so you do not have to build your own vocab notebook.
Review timing follows spaced repetition principles and fits into the larger learning loop.
That keeps the experience light without losing the long-term memory benefit.
Spaced review
HiCoCo
Works offline
Chat, look up words, and practice pronunciation — even in airplane mode. Commute, travel, no internet? No problem.
A lot of real learning happens where the internet is weak: subways, flights, travel days.
HiCoCo keeps chat, lookup, and pronunciation practice available offline as much as possible.
That makes it feel like a language companion you carry with you, not a service that disappears offline.
Offline mode
HiCoCo