Replika

Replika, made by Luka, Inc. (which states it built "the world's first AI companion" a decade ago and has since rebuilt it), is an AI companion app focused on memory and emotional continuity — remembering relationships, routines, and personal details across conversations rather than starting fresh each time. Who it's for: people seeking a customizable, ongoing AI companion for conversation and emotional support, with a persistent relationship rather than a stateless chatbot. Strengths: persistent memory across sessions (routines, plans, personal details) is a real, structural difference from a typical chatbot that forgets context between conversations. Customizable appearance and personality, plus voice calls and photo interactions, support a more personal, ongoing relationship than text-only chat. Weaknesses and limitations: as an AI companion designed around emotional connection, it's worth being thoughtful about the nature of that relationship and its role relative to real human connection. Exact pricing wasn't confirmed on the main page — the app is known to use a freemium model with paid subscription tiers for expanded features. Real-world scenario: someone wants an ongoing AI companion that remembers their life details and preferences over time, for conversation and support, rather than a stateless assistant.