Replika

Replika is an AI companion chatbot app that allows users to create their own unique AI friend. The app, developed by Luka, Inc., was released in November 2017 and has gained a user base of over 10 million as of January 2023.

Key features:
- Customizable 3D avatar that develops its own personality and memories through user interactions
- Designed to form emotional bonds with users, providing a safe, judgment-free space for discussions
- Engages in various role-playing scenarios, including romantic relationships, friendships, and mentorship
- Aims to improve users' mental well-being by offering support, mood tracking, and coping skills
- Enables users to share real-life experiences with their Replika through augmented reality and video calls

How it works:
- Users interact with Replika through text-based conversations, which help the AI learn and develop its personality
- Replika's AI is trained on a large dataset using a neural network machine learning algorithm to generate unique responses
- Users can customize their Replika's appearance, personality, and behavior, influencing its responses and interactions

Integrations:
- Available on iOS (App Store) and Android (Google Play)
- Supports virtual reality interactions on Oculus Rift

Use of AI:
Replika leverages a sophisticated neural network machine learning algorithm to generate unique responses, making conversations feel like they are with a human being. The AI is designed to provide empathetic and supportive interactions.

AI foundation model:
The AI foundation model is trained on a large dataset and is designed to mirror the therapeutic approach of Carl Rogers, focusing on empathy and support.

How to access:
Replika is available as a mobile app for iOS and Android devices. The app operates on a freemium pricing strategy, with approximately 25% of its user base paying an annual subscription fee.