Nastia AI (nastia.ai) is an uncensored AI companion app for adults, built on large language models tuned for adaptive, human-like conversation. It offers private 1-on-1 chats, group chats with multiple AI companions, AI image and video generation, voice messages, and a mental-wellness/emotional-support angle. The platform positions itself against mainstream companions like Character.AI and Replika by removing content restrictions and supporting NSFW conversation, dirty talk and adult roleplay. Nastia is available as native iOS and Android apps and as a progressive web app, and runs a freemium model with a free tier (daily messages, no credit card required) and paid plans roughly in the $4.17–$15.99/month range depending on tier and billing cycle, unlocking unlimited messages, voice and uncensored image generation. The site shows a 2023–2026 copyright span. Company ownership and funding are not publicly disclosed.