RazFit vs Substy AI
Side-by-side comparison to help you choose the right product.
RazFit is your AI trainer that delivers personalized bodyweight workouts in minutes, scaling with you from beginner to advanced.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
RazFit is a paradigm-shifting fitness platform engineered for the modern, scaling individual. It's not just another workout app; it's a hyper-efficient, AI-powered personal training system built natively for iOS 18+ using SwiftUI. Designed for busy professionals, entrepreneurs, and anyone with a growth mindset, RazFit deconstructs the traditional barrier of time by delivering high-intensity, bodyweight workouts in just 1 to 10 minutes per day. No gym membership, no equipment, and no lengthy commutes are required. The core value proposition is maximum results with minimum time investment. The app intelligently scales with you, featuring two AI virtual coaches, Orion and Lyssa, who evaluate your fitness level and automatically adapt exercise difficulty. A robust gamification engine with 32 unlockable milestones provides continuous motivation, turning fitness into a rewarding, engaging journey. From complete beginners to advanced athletes seeking efficient maintenance, RazFit offers a scalable, personalized path to transformation, leveraging cutting-edge technology for a seamless, powerful user experience that grows as you do.
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.