RazFit vs Substy AI
Side-by-side comparison to help you choose the right product.
RazFit is your AI trainer that delivers effective, equipment-free bodyweight workouts in just minutes.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
RazFit is the high-efficiency fitness engine for the modern, fast-paced life. It's a premium, native iOS app built entirely in SwiftUI, delivering a powerful, equipment-free body transformation directly to your iPhone or iPad. Designed for anyone from absolute beginners to seasoned athletes, RazFit shatters the time-excuse barrier by providing scientifically-backed, high-intensity workouts that take just 1 to 10 minutes per day. No gym membership, no equipment, and no complex routines—just your body and a clear path to results. At its core, RazFit leverages cutting-edge AI technology with two virtual coaches, Orion and Lyssa, who personalize your journey by evaluating your fitness level and automatically adapting exercises in real-time. Coupled with a robust gamification system featuring 32 unlockable achievement badges, it transforms discipline into an engaging, rewarding game. Experience a fluid, seamless interface powered by the latest iOS 18+ technologies, making every interaction fast and every workout smooth. Your transformation starts with a full-access, 3-day free trial—no credit card required.
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.