RazFit vs Substy AI
Side-by-side comparison to help you choose the right product.
RazFit is your AI trainer for effective, equipment-free bodyweight workouts personalized to your goals and schedule.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit

Substy AI

Overview
About RazFit
RazFit is a revolutionary fitness application designed for the modern, busy individual. It is a native iOS app built entirely with SwiftUI, delivering a fast and seamless experience on iPhone and iPad. The core mission of RazFit is to eliminate common barriers to exercise by providing highly effective, equipment-free workouts that require just 1 to 10 minutes per day. It leverages cutting-edge AI technology and sophisticated gamification to create a personalized and motivating fitness journey accessible to everyone, from absolute beginners to seasoned athletes. Users benefit from AI-powered virtual coaches, Orion and Lyssa, who provide guidance and automatically adapt exercises. With over 30 bodyweight exercises, multiple difficulty modifications, and 32 unlockable achievement badges, RazFit ensures continuous progression and sustained motivation. The app supports six languages and utilizes the latest iOS technologies for optimal performance, making transformative fitness results achievable anytime, anywhere.
About Substy AI
Substy is the first platform to combine a full CRM and an autonomous AI chatbot in a single system built exclusively for OnlyFans and Fanvue agencies - and today it's the most widely adopted solution on the market.
The CRM is a complete agency workspace: add your chatters with custom access levels, let them chat directly from the platform, create and track tracking links (TikTok, Reddit, Telegram), classify fans automatically into Spenders, VIPs, Newbies, and Timewasters, and monitor every chatter's performance in real time - revenue, response rate, average basket.
The AI Chatbot runs 24/7 without human input. It sells PPV, handles objections, re-engages cold fans, and adapts its tone in any language - fully autonomous, not a co-pilot.
The hybrid mode is the game changer: AI handles fans below a spend threshold, human chatters take over only for VIPs. Agencies cut costs by 25% while automating 90% of messages.
Compatible with OnlyFans and Fanvue.