Install APK
🟠 Zeriko 🔵 World
🧠 Built on Cognitive Science

Learn like a child.
Speak from day one.

We replaced passive textbooks with an AI linguistic engine. No grammar drills. Just natural conversations, instant corrections, and algorithmic memory.

Google Continue with Google — start free
60+ AI Personas
20 Languages
Luca the Chef Active Session
Luca is typing...

The Natural
Acquisition Loop

Children don't memorize verb tables. They listen, they attempt to speak, they fail, and they are gently corrected. Zeriko digitizes this exact biological process.

Listen Before You Read

Zeriko's Neural Voice synthesizes regional accents perfectly. You tune your ear to the melody of the language instantly.

Safe Environment to Fail

Chat with an AI that never judges. Whether you use the A0 Choice Mode or free-type, the goal is output generation.

Algorithmic Flashcards

Every new word or corrected grammar mistake is converted into an active recall flashcard, scheduled right before you forget it.

Engine Architecture

Powerful features hidden behind a beautifully simple interface.

Error Exploitation Matrix

The engine logs every syntactical error you make during conversations. It instantly compiles these into custom flashcards, ensuring your weakest points become your strongest assets.

Dynamic Personas

Interact with 60+ engineered personalities. Practice street slang in Berlin or formal business negotiations in Tokyo.

Spaced Repetition (SRS)

An integrated algorithmic review system schedules vocabulary precisely when your brain is about to forget it.

Next Review Today
L'apprentissage
The learning

Voice & Dictation

State-of-the-art speech recognition evaluates your pronunciation, while AI voices train your listening skills.

Translation Toggle

Never get stuck. Swipe any message to instantly reveal the literal translation in your native language.

📱 Native Apps — Coming Soon

Zeriko is coming to
your pocket.

The full Zeriko AI engine redesigned for mobile. Offline mode, push-to-speak, and haptic feedback. Be first in when we launch.

114
people already on the waitlist ⚡ Limited spots

No spam. Ever. Just one email when it's live.

Frequently Asked Questions

Do I need to know grammar before using Zeriko?

Not at all. Just like a child learns their native tongue, you learn grammar intuitively through exposure and gentle correction. If you make a structural error, the AI corrects you in real-time, teaching you the rule *in context* rather than via abstract tables.

I'm a complete beginner. Isn't chatting too hard?

For complete beginners (A0), Zeriko activates "Choice Mode". Instead of forcing you to type, the AI provides 3 contextual, translated replies for you to choose from. You learn by observing the patterns and picking the right response.

What is Spaced Repetition (SRS)?

SRS is a scientifically proven memory technique. When you learn a new word in a chat, Zeriko saves it. It then quizzes you on that word at increasing intervals (e.g., 1 day, 3 days, 1 week). If you get it right, the interval increases. If you forget, it decreases. It guarantees long-term retention.

Can I practice speaking out loud?

Yes. You can send voice messages instead of typing. The engine will transcribe your speech and the AI will respond with high-fidelity, native-sounding audio.

Get Zeriko on Android

Download the official APK directly from our website. It's the same app — just not yet on the Play Store.

Download Zeriko APK (2.1 MB)
SHA-256 Integrity Hash:
F1271D09B4B481D986DDFF455A65BA41E3F0B7829E4E6C931C7DD22855F58685
This hash proves the file hasn't been modified. You can verify it yourself with sha256sum on Linux/Mac or Get-FileHash on Windows. If you're not a developer, don't worry — this is just a transparency guarantee.

📲 How to install:

1
Tap the download button above. The APK will save to your Downloads folder.
2
Open the APK file. Android will ask you to allow installs from this source. Tap "Settings" → enable "Allow from this source".
3
Tap "Install". The app will appear on your home screen. That's it!
?
Still blocked? Go to Settings → Apps → Special Access → Install Unknown Apps, then enable your browser (Chrome, Firefox, etc.).
Don't miss the Play Store launch

🚀 Be first on Google Play

We'll send one email when Zeriko goes live on the Play Store. Early testers get free premium access during Alpha & Beta — spots are limited!

You're on the list! We'll email you.
Limited spots Free premium for testers

Get Zeriko on iOS

Zeriko works as a full PWA on iPhone & iPad — it looks and feels like a native app once saved to your Home Screen.

Works automatically on supported browsers. If it doesn't, follow the steps below.

📲 Manual setup (Safari):

1
Open zeriko.org in Safari (this must be Safari — Chrome on iOS won't work for this).
2
Tap the Share button at the bottom of Safari.
3
Scroll down and tap "Add to Home Screen".
4
Tap "Add". Zeriko will appear as an app icon on your Home Screen — full screen, no browser bar!
Pro tip: Once added, it works offline, sends push notifications, and launches in full screen — just like a native app.
Be first on the App Store

🍎 Be first on the App Store

We'll send one email when Zeriko goes live on the App Store. Early testers get free premium access during Alpha & Beta — spots are limited!

You're on the list! We'll email you.
Limited spots Free premium for testers