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Authentication.
Optional but built-in.

Add email, mobile, Google, or Apple sign-in to your onboarding flow.
Connects to Firebase, Supabase, or any backend.

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Built by
photo of jordan bonnet
1st mobile eng at
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Save weeks
Don't spend weeks building a user onboarding flow. With Fluo, it takes 15 minutes.
Made for Flutter
No more web patterns. Fluo's design is optimized for the best UX on mobile & web.
Security
No need to worry about security. Fluo implements the best security practices.
Remote control
No need to push a new app update. Fluo lets you configure the onboarding flow remotely.

Your users, your data. Auto-forward user data to your backend.

Firebase
Native integration
Supabase
Native integration
All the others
Using JWT

Customization at its core. Support for all major Flutter platforms.

fluo on mobile

Fluo supports multiple authentication methods: Email + OTP, Mobile + OTP, Google, Apple, GitHub (coming soon), and LinkedIn (coming soon).

Yes! While Fluo provides seamless integration with Firebase and Supabase, you can use it with any backend using JWT. The SDK handles authentication and user management, while you maintain control over where and how you store user data.

Yes, Fluo implements industry-standard security practices. We use secure token management, support 2FA through social providers, and ensure all data transmission is encrypted.

Fluo supports multiple messaging channels including WhatsApp, SMS, LINE, Viber, RCS, and Telegram. We automatically select the best channel for each region and can fallback to SMS when needed, ensuring the highest delivery rates for your verification messages.