Built for iPhone. Built for privacy.

Speak more.
Stay private.

Koko is a fully local language learning app for listening and conversation practice. No cloud. No connection. Just you, speaking with confidence.

Download on theApp Store

100% on-deviceWorks offlinePrivate by default

YOUR VOICE

YOUR IPHONE

NOWHERE ELSE

A better way to practice

Real conversation.
Zero audience.

The fastest way to get comfortable speaking is to speak. Koko gives you a judgment-free place to practice, even when there is no Wi-Fi.

Speak without pressure

Practice real conversations with a patient partner that adapts to your level and lets you try again.

Train your ear

Hear natural speech, replay tricky phrases, and build confidence understanding the language as it is spoken.

See yourself improve

Follow speaking time, vocabulary, consistency, and level progress without creating a cloud profile.

Offline means offline

The cloud can't hear you.

Koko's speech recognition, conversation intelligence, and natural voice run locally on your iPhone. Your recordings, words, and progress never need to leave your device.

✓ Practice anywhere, including on a plane
✓ No account required to start speaking
✓ No voice recordings sent to a server

LOCAL FIRST Your language practice belongs to you.

Inside Koko

From first word
to real momentum.

One calm place to start a conversation, listen closely, and notice how far you have come.

Koko speaking practice screen with an example Spanish response

Speak more

Unlimited speaking practice with help whenever you need it.

Koko private Spanish conversation transcript with feedback

Stay private

Your voice, info, and data never leave your device.

Koko language level screen showing an intermediate B1 level

Match your level

Slow, easy words for beginners. Complex, natural speech for advanced learners.

Koko progress dashboard with speaking and listening statistics

Track your progress

See your words, practice time, and momentum add up.

Koko welcome screen highlighting offline practice

Practice offline

Use Koko anywhere, even on airplane mode.

How it works

Less studying.
More speaking.

Choose a conversation

Pick a topic, situation, or let Koko surprise you.

Speak naturally

Talk at your pace. Koko listens and responds on-device.

Hear your progress

Review useful words, speaking time, and past recordings.

Your next conversation is ready

Go ahead.
Say something.

Private, fully local listening and speaking practice.
Made for iPhone.