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Secure authentication system for your mobile application

$150
Quantity
1
Delivery in
3 days
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What you get with this Offer

This service includes the design and development of a complete authentication flow for your mobile app. I will create the required screens, form validation, authentication logic, and integration needed for users to securely create an account, log in, and access your app.

Depending on your project requirements, this offer can include:

Login screen
Sign up / create account screen
Phone number authentication
Email and password authentication
Forgot password flow
Reset password flow
OTP verification
Firebase Authentication integration
Custom API authentication integration
Password strength validation
Confirm password validation
Show / hide password option
Input validation and error messages
Secure login and logout functionality
User session handling
Authentication state management
Clean and responsive mobile UI
Multi-language support if required
Testing of the full authentication flow

What makes this offer different is that I do not only create basic login screens. I build a complete authentication experience that is secure, polished, easy to use, and suitable for a real mobile application.

To start the order, I will need your app requirements, design reference if available, preferred authentication method, backend/API details if required, Firebase access if needed, and any special features such as OTP, social login, or multilingual support.

Basic authentication can usually be completed within 2–4 days Advanced authentication with OTP, Firebase, API integration, social login, or custom backend logic may take 5–7 days, depending on the project scope.

What the Freelancer needs to start the work

For this authentication feature, I will need the following details from the Buyer to get started:
Please provide your mobile app requirements and explain what type of authentication you need, such as phone login, email/password login, OTP verification, Firebase Authentication, custom API authentication, or social login.

I will also need:

Your app source code or project files
Design reference, Figma file, screenshots, or UI style preference
Preferred authentication method
Backend API details, if authentication is connected to your own server
Firebase project access, if you want Firebase Authentication
OTP provider details, if phone verification is required
Required user fields, such as full name, phone number, email, password, etc.
Password rules or validation requirements
Any error messages or language support you want included
App platform details, such as Flutter, React Native, Android, iOS, or another framework

If the app already has an existing backend, please provide the API documentation, login/register endpoints, request format, response format, and test credentials if available.

Once I receive these details, I can review the project and start building the complete authentication flow.