RazFit vs Substy AI
Side-by-side comparison to help you choose the right tool.
Transform your body in just minutes with RazFit's personalized, equipment-free workouts designed for any fitness level!.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit

Substy AI

Overview
About RazFit
RazFit is an innovative native iOS fitness app designed exclusively for iPhone and iPad users, built entirely in SwiftUI. This cutting-edge app offers high-intensity bodyweight workouts that range from just 1 to 10 minutes a day, making it perfect for anyone, anywhere—no gym or equipment is required! With its intuitive AI coaching feature, RazFit presents two virtual trainers, Orion and Lyss, who assess your fitness level and automatically tailor exercises to suit your needs. The app's gamification aspect, featuring 32 unlockable milestones, keeps you engaged and motivated throughout your year-long training journey. Whether you're a complete beginner or an advanced athlete, RazFit adapts to your fitness level, allowing you to control your progression with easy and hard modifications for every exercise. By harnessing the latest iOS 18+ technologies, RazFit ensures a fast and smooth native experience. Ready to kickstart your fitness journey? Enjoy a 3-day free trial to experience all that RazFit has to offer!
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.