1
Describe it
Type what you want in plain words — "a countdown to my exam with a big number."
Chaaga
Your idea. Your app. No code.
Anyone can build the app only they would think of.
Chaaga turns a plain-language idea into a real, working app — for your family, your field, your classroom or your shop. No engineers, no waiting, no permission.
iPhone & Android · Free to try
A dad making a game for his kid
How it works
2
AI builds it
Chaaga writes it and opens it a few seconds later. Nothing to install, nothing to set up.
3
Use it, tweak it, keep it
Ask for changes in the same chat — "make the button bigger", "add a reset". It stays on your phone for good, and you can share it.
What you can make
Real things people made in a few minutes. Each one started with a single sentence.
Split the Bill
Tip, tax and who owes what, in three taps.
Streaks
A habit grid that fills in as the month goes.
Dice Table
d4 through d20 with a shake-to-roll gesture.
Days Until
One giant number counting down to the thing.
Flashcards
Paste a list, get a swipeable study deck.
Tap Racer
A silly two-thumb race for two people, one phone.
Shift Pay
Log hours, see the paycheck before payday.
Plant Water
Six plants, six schedules, one nudge a day.
Why Chaaga
On-device and private
Your apps and their data stay in local storage on your phone. Nothing is uploaded to us.
Pay only for what you build
Buy usage in our shop as you go. No subscriptions to manage.
No sign-up to start
Install, type, build.
For tinkerers too
01 · Sync
02 · Plain web code
03 · Native bridge
Built for beginners and developers
Never written a line of code? Just describe your app. Comfortable in an editor? Every Chaaga app is plain HTML and JavaScript you can open, edit and extend yourself.
Work on your computer, run it on your phone
The chaaga-cli tool keeps a folder on your computer in sync with an app on your phone, straight over your Wi-Fi. Save in your usual editor and the change shows up on the phone, or pull an app the AI built down to your laptop. No cloud and no account.
Write HTML and JavaScript directly
No framework, no build step, no lock-in. Write the code by hand, let the AI write it, or mix the two: ask for a feature in chat, then fine-tune the result yourself.
Use the phone's features from JavaScript
A built-in chaaga bridge gives your page native features: local and scheduled notifications, contacts, the camera and microphone, a barcode scanner, file picking, keeping the screen awake and more.
terminal
# keep ./my-app in sync with app 3 on your phone
chaaga-cli sync ./my-app -a 3 -h 192.168.1.23index.html
await chaaga.notifications.requestPermission();
await chaaga.notifications.show({
title: 'Water the plants',
body: 'The basil is thirsty 🌿',
});
const friend = await chaaga.contacts.pick();
const stream = await navigator.mediaDevices
.getUserMedia({ video: true });Questions
Is it free?+
No card and no account needed to start. Buy usage in the shop when you need more.
Do I need to know how to code?+
No. Describing what you want is enough. If you do read code, the editor is one tap away and every app is a web file you can rewrite by hand.
Where does my data live?+
On your device. Apps and whatever they store never leave the phone. The only thing sent out is the prompt you type, which goes to the AI gateway.
How many apps can I make?+
As many as you want. There's no cap on how many apps you keep on your phone — build a new one whenever an idea shows up.