RazFit vs Substy AI
Side-by-side comparison to help you choose the right AI tool.
RazFit is your AI trainer that transforms your body in minutes with daily, equipment-free workouts tailored to you.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
RazFit is your personal revolution in fitness, designed to shatter every excuse. It is a powerful, native iOS app built entirely in SwiftUI, delivering a fast and seamless experience on iPhone and iPad. This is not another generic workout tracker; it's a complete transformation system engineered for real life. RazFit delivers high-intensity, bodyweight workouts that require just 1 to 10 minutes of your day. No gym membership, no equipment, and no complicated routines—just you and your commitment. At its core, RazFit features intelligent AI coaching with two virtual trainers, Orion and Lyss, who evaluate your starting point and automatically adapt exercises to your evolving fitness level. A robust gamification system with 32 unlockable milestones fuels your motivation, turning every workout into a rewarding step toward your goals. Whether you're taking your first fitness step or are an advanced athlete seeking efficient training, RazFit's scalable exercises with easier and harder modifications put you in complete control of your progression. It leverages the latest iOS technologies to offer a smooth, immersive experience. Start your journey with a full-access 3-day free trial and discover how minutes a day can unlock a stronger, more energized you.
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.