RazFit vs Substy AI
Side-by-side comparison to help you choose the right product.
RazFit is your AI-powered trainer for quick, effective bodyweight workouts that transform your fitness in just minutes a day, no equipment needed.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
RazFit is a cutting-edge native iOS fitness application designed specifically for iPhone and iPad users, utilizing the innovative SwiftUI framework. This app revolutionizes the way individuals approach fitness by providing high-intensity bodyweight workouts that can be completed in as little as 1 to 10 minutes a day, eliminating the need for a gym or any equipment. RazFit is tailored for users of all fitness levels, from absolute beginners to seasoned athletes, making it an inclusive platform for anyone looking to enhance their physical health. The app features two advanced AI coaches, Orion and Lyss, who assess users' fitness levels and automatically adjust exercises to ensure optimal performance and progression. With 32 gamified milestones, users can stay motivated throughout their year-long training journey. Each exercise comes with varying difficulty levels, allowing individuals to control their progression and achieve their personal fitness goals effectively. Start your journey with a 3-day free trial and transform your body, no excuses needed.
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.