ApparenceKit
A Flutter app boilerplate with auth, subscriptions, and push notifications ready to ship
- Best for
- Mobile teams building a Flutter app with subscriptions who want auth, paywalls, and push notifications pre-built.
- Skip if
- You're not using Flutter, or you want a free/open-source option to inspect before buying.
ApparenceKit is a paid Flutter starter kit that bundles the modules most mobile SaaS apps need: authentication (email, phone, social), in-app subscriptions via RevenueCat with paywall templates, push notifications, onboarding flows, home screen widgets, localization with RTL support, and an AI chatbot module. It supports Firebase, Supabase, or a custom REST API as the backend, with Riverpod for state management.
Pros
- Broad feature set: RevenueCat paywalls, push notifications, onboarding, home screen widgets
- Flexible backend choice - Firebase, Supabase, or a custom REST API
- Claims 100% test coverage and ships Cursor/AI-assistant rules
- Unlimited-apps tiers make it reusable across multiple projects
Cons
- Paid only, starting at $149, no free tier to try before buying
- Not open-source - code is delivered via CLI after purchase, so pre-purchase inspection is limited
- Could not verify GitHub stars or independent usage signals since there's no public repo
Features
Auth and access
- Auth included
- Social login
Payments and billing
- Payments included
- Subscriptions
AI capability
- AI chat
What's in the box
- Onboarding flow
- In-app notifications
Growth and ops
- i18n
- Dark mode
Alternatives
IndieKit
Next.js 16 SaaS starter with a free MIT tier and closed-source paid Pro
from $79
Carrot Seed
Multi-platform starter for web, mobile, and desktop apps
ShipFast
Closed-source Next.js SaaS kit from indie hacker Marc Lou