Ship your app in 7 days.

The only complete Flutter kit: backend, auth, payments, UI and logic, ready to go. You focus on what makes your app unique.

With your favorite IDE.

Get Kasy Pro

Composer 2.5

From code to store

Backend, branding and publishing. Everything missing between the kit and the App Store.

Smart CLI

Multilingual and self-configuring. Answer a few prompts and it sets up nearly everything on its own. Built for non-developers in the terminal.

Kasy CLI terminal with guided setup in Portuguese

Your brand

Rebrand skills included with every project. Use Cursor or Claude with your Figma file and AI applies your identity to the kit. Typography, icons, colors and spacing in minutes.

Kasy design system colors and token panel

One codebase

One setup for Android, iOS and Web. No rework between platforms. With Preview Device, validate your implementation with fidelity on the Web.

Everything your Flutter app needs

Backend, authentication, subscriptions, ads, push and publishing, all integrated, ready on day one.

What you get

Everything you need. Nothing else.

Every category comes ready to ship. Click a tab and see what's included.

8 categories · 66+ features

Every login method, set up and ready.

GoogleAppleFacebook

+12h saved

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

Monetize from day one with RevenueCat and Stripe.

RevenueCatStripe

+15h saved

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, redirects premium content
Free trial support

Push, in-app and local reminders.

iOSAndroid

+10h saved

Push 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, fully customizable.

iOSAndroidWeb

Weeks saved

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 surprises.

FirebaseSupabaseREST API

+8h saved

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

Native home-screen widgets, synced.

iOSAndroid

+6h saved

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

+8h saved

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 input

Everything else. No feature 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, color, language and haptic feedback selection

Onboarding

Customizable first-run experience

Analytics

Mixpanel with event tracking and navigation observer

Crash reporting

Sentry to monitor 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 just works

Open URLs

Open URLs, emails and phone numbers natively

File picker

Pick files and images directly from the device

Haptic feedback

Configurable haptic feedback across the app

Update checker

Automatic version checks with an update prompt

Forced update

Mandatory update for critical versions

CI/CD

Codemagic and GitHub Actions for test, build and deploy

Strict linting

Opinionated lint rules for consistent code 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

+12h saved

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

Made with Kasy

Build the next big app.

Our kit is more than code, it's a launch platform. See what's possible when you skip the setup.

0supported backendsFirebase · Supabase · REST

0+UI components95+ variants

0supported platformsiOS · Android · Web

Testimonials

Loved by people who build and ship fast.

Developers and founders going from idea to the App Store in days, not months.

I shipped my first app in 6 days. The CLI already had Firebase, auth and payments set up before I even opened the editor.

Lucas Almeida

Indie developer

I'm not a developer and I still got a real app into both stores. Kasy guided me through every step.

Marina Costa

Founder

The browser preview alone saved me hours. No emulator: iOS and Android side by side, right in the browser.

Diego Fernández

Mobile engineer

I shipped my first app in 6 days. The CLI already had Firebase, auth and payments set up before I even opened the editor.

Lucas Almeida

Indie developer

I'm not a developer and I still got a real app into both stores. Kasy guided me through every step.

Marina Costa

Founder

The browser preview alone saved me hours. No emulator: iOS and Android side by side, right in the browser.

Diego Fernández

Mobile engineer

I migrated a client project to Supabase in minutes. Same code, different backend. Impressive.

Priya Nair

Freelancer

RevenueCat, push and analytics all came ready. I just built my features and shipped.

Tom Becker

Solo founder

CLI updates without breaking what was already live. No other kit does that.

Sofia Rossi

Product engineer

I migrated a client project to Supabase in minutes. Same code, different backend. Impressive.

Priya Nair

Freelancer

RevenueCat, push and analytics all came ready. I just built my features and shipped.

Tom Becker

Solo founder

CLI updates without breaking what was already live. No other kit does that.

Sofia Rossi

Product engineer

From idea to TestFlight in a week. The component gallery made the UI the easiest part.

Akira Tanaka

Designer & builder

One stack, three backends. I chose Firebase, the client wanted REST. Zero rewrites.

Hannah Müller

Agency lead

The AI editor rules made Cursor feel like it already knew the entire Kasy project.

Rafael Santos

Full-stack dev

From idea to TestFlight in a week. The component gallery made the UI the easiest part.

Akira Tanaka

Designer & builder

One stack, three backends. I chose Firebase, the client wanted REST. Zero rewrites.

Hannah Müller

Agency lead

The AI editor rules made Cursor feel like it already knew the entire Kasy project.

Rafael Santos

Full-stack dev

Pricing

Choose your plan and start building

From kit to build in minutes. Pick the plan that fits you.

Annual

For those who already code and want the complete kit.

$127/ year

Firebase, Supabase & REST API
Unlimited apps
60+ UI components (95+ variants)
All optional features
1 year of updates
Community support

Kit + Course

To go from zero to publishing your first app.

$193one-time payment

Everything in the Annual plan
Full course, 1 year of access
From idea to published app in 7 days
Built for non-developers
Exclusive creator community
Priority support

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

Questions, answered.

Still have questions?

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

Send email

Ship your app in 7 days.

From code to store

Smart CLI

Your brand

One codebase

Everything your Flutter app needs

Everything you need. Nothing else.

Build the next big app.

Loved by people who build and ship fast.

Choose your plan and start building

Annual

Kit + Course

Questions, answered.

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

What's the difference between Kasy and other boilerplates?

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 the training?

Can I sell the apps I build with the kit?

Can I get a refund?

Still have questions?