Ship your app in 7 days.

No weeks of setup. No reinventing components. No rework for Android, iOS, and Web. The complete Flutter kit: backend, auth, payments, UI, and our CLI. You focus on the idea.

Works with your favorite IDE.

Get Kasy

Composer 2.5

What slows the launch

Setup, visual identity, and multi-platform work, handled before you open the editor.

Our smart CLI

Tired of burning AI tokens (and money) just to configure a project? Answer a few prompts: our multilingual CLI sets up nearly everything on its own. Also built for people who have never written a hello world.

Your visual identity

Rebrand skills ship with the project. With Cursor or Claude and your Figma file, AI applies typography, icons, colors, and spacing to the kit in minutes, not weeks.

Kasy design system colors and token panel

iOS, Android, and Web

Stop rebuilding for each platform. With Flutter, one codebase covers all three without the usual cross-platform rework. With Preview Device, you validate in the browser with real fidelity.

Everything a real app needs

Backend, login, subscriptions, ads, push notifications, and publishing, already wired. You don't assemble the stack. You ship.

What you get

Ready to ship. Not ready to assemble.

Every category comes store-ready. Open a tab and see what's included.

9 categories · 72+ features

Every login method, set up and ready.

GoogleAppleFacebook

weeks less of headache

Google login, iOS + Android + Web
Apple login, iOS + Android + Web
Facebook login, iOS + Android + Web
Email and password
Phone, SMS OTP
Anonymous auth with account linking, without losing data
Password recovery

Driver and passenger flow, ready like an Uber-style app.

iOSAndroidWeb

weeks less building a ride-hailing app

Passenger flow, request, track, and complete the ride
Driver flow, accept rides and manage the trip
Maps and real-time location
Runs on iOS, Android, and Web, one base, three platforms
Ready to customize, brand, screens, and your app rules
Full Uber-style foundation, without building the flow from scratch

Monetize from day one with RevenueCat and Stripe.

RevenueCatStripe

weeks less wiring subscriptions

RevenueCat integration, iOS + Android + Web
4 paywall styles, Minimal, Grid, Row, Toggle
Comparison table, component included
A/B testing via RevenueCat Experiments, no rebuild
Real-time subscription state, synced via webhook
Swap the paywall from the dashboard, no rebuild
Paywall guard, protects premium content
Free trial support

Push, in-app and local reminders.

iOSAndroid

days less wiring push

Push notifications via Firebase Cloud Messaging, FCM
In-app notification list, with timestamps
Badge counter, unread
Deep link, tap the notification, opens the right screen
Token management, device and cleanup
Cloud Function, delivery via webhook
Local reminders, daily, weekly, or one-off, no server

60+ components, 95+ variants, ready to customize.

iOSAndroidWeb

~1 month of UI from scratch

60+ production-ready components, 95+ variants
Tested on iOS, Android, and Web
Dark and light mode, automatic or user-switched
Full library, Accordion, Alert, AppBar, Avatar, Badge, BottomSheet, Button, Card, Checkbox, Chip, Dialog, Input, OTP, Skeleton, Sidebar, SwipeAction, TextArea, TextField, Toast
Custom animations, route transitions
Built-in haptic feedback
Browser gallery, copy any name for AI

Production-grade rules, no store surprises.

FirebaseSupabaseREST API

7+ days less of headache

Firestore security rules, production-ready
Row Level Security (Supabase), production-ready
Firebase Storage rules, per-user isolation
App Store and Play Store permissions, handled, fewer rejections
Dart defines, separate dev from production, no secrets in code

Native home-screen widgets, kept in sync.

iOSAndroid

no native extension code

Home-screen widget, iOS and Android
Automatic updates, in the background
Syncs with app state, subscription, user data
Configurable, from the app admin panel
App Groups support (iOS), shares data with the extension

Built-in chat with OpenAI or Gemini.

FirebaseSupabaseREST API

no API key fights

Chat interface, OpenAI or Google Gemini
Conversation history, full context
Server-side API key, never in the app
Secure proxy, Cloud Function (Firebase) or Edge Function (Supabase)
Full UI, bubbles, loading, send field

The rest of the product. Nothing essential left out.

FirebaseSupabaseREST API

22 features

Profile

Update your name, link or unlink accounts, change your avatar

Ads

Banner, interstitial, rewarded, and rewarded-interstitial

File upload

Progress, cancelable uploads, and folder organization

Settings

Theme, colors, language, and haptic feedback

Onboarding

Customizable first-run experience

Analytics

Mixpanel with event tracking and navigation observer

Crash reporting

Sentry for production errors, with source map upload

Localization

EN, PT, and ES included, easy to extend

Notes (CRUD example)

Create, read, update, and delete with real-time sync

Logging service

Structured, leveled logging, ready to use

Timezone

Timezone-aware scheduling that actually works

Open URLs

Open URLs, emails, and phone numbers natively

File picker

Pick files and images directly from the device

Haptic feedback

Configurable haptics across the app

Update checker

Automatic version checks with an update prompt

Forced update

Mandatory update for critical versions

CI/CD

Codemagic for test, build, and deploy

Strict linting

Well-defined lint rules for consistent quality

Accessibility

Screen readers, semantic labels, and a11y best practices

AI editor support

Rules, agents, and skills for Cursor, Claude Code, and Windsurf

Web (PWA)

Runs in the browser as a PWA

Feature requests

Users suggest and vote on features in the app

Every login method, set up and ready.

GoogleAppleFacebook

weeks less of headache

Google login, iOS + Android + Web
Apple login, iOS + Android + Web
Facebook login, iOS + Android + Web
Email and password
Phone, SMS OTP
Anonymous auth with account linking, without losing data
Password recovery

New features and components every month.

Full drive flow
Driver and passenger flow, ready like an Uber-style app. Runs on iOS, Android, and Web.

Paywall included
RevenueCat for native, Stripe for Web. Subscriptions on day one.

AI support chat
A complete intelligent support flow inside the app.

Request and vote on features
Users suggest improvements and vote on what they want next.

Project Kanban
Organize app tasks in the admin area and track progress.

Complete setup
A quick pass through the project: components, AI, and what's already ready.

Cursor

MCP Kasy

Ask Kasy MCP…

Composer 2.5

MCP Kasy

Works with your favorite AI.

Ask in chat. The kit answers.

In chat, Kasy MCP sets up your machine, creates the app, and builds screens in the kit standard. The AI doesn't freestyle: it follows what's already ready.

40+ tools available

Ideas shipping

Your idea. In the stores.

More than code: the shortest path from idea to a published app. See what's possible when you skip the setup.

0supported backendsFirebase · Supabase · REST

0+UI components95+ variants

0supported platformsiOS · Android · Web

Testimonials

From people who left the idea and shipped.

Founders and developers who got past setup and made it to publish.

The CLI set up Firebase, login, and payments before I touched a single screen. In about a week I was already on TestFlight.

Lucas Almeida

Indie developer

I don't code. I still got my app submitted to both stores, following the kit and asking for help when I got stuck.

Marina Costa

Founder

The browser preview saved me hours. No spinning up emulators: iOS and Android side by side in the browser.

Diego Fernández

Mobile engineer

The CLI set up Firebase, login, and payments before I touched a single screen. In about a week I was already on TestFlight.

Lucas Almeida

Indie developer

I don't code. I still got my app submitted to both stores, following the kit and asking for help when I got stuck.

Marina Costa

Founder

The browser preview saved me hours. No spinning up emulators: iOS and Android side by side in the browser.

Diego Fernández

Mobile engineer

I moved a client project to Supabase without rewriting the app. That would have taken me days elsewhere.

Priya Nair

Freelancer

RevenueCat, push, and analytics were already there. I built my features and submitted for review.

Tom Becker

Solo founder

I updated through the CLI and nothing broke on the live app. With other kits that always gave me headaches.

Sofia Rossi

Product engineer

I moved a client project to Supabase without rewriting the app. That would have taken me days elsewhere.

Priya Nair

Freelancer

RevenueCat, push, and analytics were already there. I built my features and submitted for review.

Tom Becker

Solo founder

I updated through the CLI and nothing broke on the live app. With other kits that always gave me headaches.

Sofia Rossi

Product engineer

Idea to TestFlight in about a week. The component gallery saved me from building the UI from scratch.

Akira Tanaka

Designer & builder

I started with Firebase. The client asked for REST mid-project. I didn't have to start over.

Hannah Müller

Agency lead

The Cursor rules made the AI follow the project's patterns. Less time fixing the obvious stuff.

Rafael Santos

Full-stack developer

Idea to TestFlight in about a week. The component gallery saved me from building the UI from scratch.

Akira Tanaka

Designer & builder

I started with Firebase. The client asked for REST mid-project. I didn't have to start over.

Hannah Müller

Agency lead

The Cursor rules made the AI follow the project's patterns. Less time fixing the obvious stuff.

Rafael Santos

Full-stack developer

Pricing

Pick the plan that fits your moment

Both plans work for people who code and for people who never have. The difference is Kasy Club: guidance, networking, and priority support.

Annual Kit

Backend, UI, and CLI ready to ship.

$123for 1 year

iOS, Android, and Web on day one
Firebase, Supabase, and REST API
Auth, subscriptions, and push ready
60+ components · 95+ variants
Kasy MCP in chat
CLI and Preview Device
Create and update unlimited apps
New features every month
Support included

Kit + Kasy Club

Everything in the Kit, plus classes, lives, and support.

$187for 1 year

Everything in the Annual Kit
Kasy Club for 1 year
Exclusive classes and weekly lives
1 year on Aicrus's Apple Developer account
Community for networking and co-founders
Guidance from idea to publish
Priority support
7-day Club guarantee

Explore Kasy Club

Regional discounts so Kasy stays accessible to everyone. 🌎Apply at checkout

Secure checkout via Stripe. International cards accepted. Your activation key arrives by email within minutes.

7 days to the App StoreFirebase · Supabase · REST60+ components · 95+ variantsiOS · Android · WebShip in 7 days

FAQ

Straight questions. Straight answers.

Still have a question?

Reach out before you buy. We reply within 24 hours.

Send email

Ship your app in 7 days.

What slows the launch

Our smart CLI

Your visual identity

iOS, Android, and Web

Everything a real app needs

Ready to ship. Not ready to assemble.

Full drive flow

Paywall included

AI support chat

Request and vote on features

Project Kanban

Complete setup

Ask in chat. The kit answers.

Your idea. In the stores.

From people who left the idea and shipped.

Pick the plan that fits your moment

Annual Kit

Kit + Kasy Club

Straight questions. Straight answers.

Do I need to know how to code to use Kasy?

Why is Kasy better than other Flutter boilerplates?

How do Quick Mode and Advanced Mode work?

Can I use the kit on multiple projects?

What if I already have a project in progress?

What happens when my annual access expires?

Which platforms does the app run on?

What is Kasy Club and what are the benefits?

Can I sell the apps I build with the kit?

Can I get a refund?

Still have a question?