RazFit vs Substy AI
Side-by-side comparison to help you choose the right tool.
RazFit is your AI personal trainer that delivers effective, equipment-free workouts personalized to your goals and schedule.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
RazFit represents a paradigm shift in personal fitness, designed for the modern individual who values efficiency, personalization, and technological elegance. It is a state-of-the-art, native iOS fitness application meticulously crafted in SwiftUI, delivering a seamless and responsive experience exclusively for iPhone and iPad users. At its core, RazFit dismantles the most common barriers to consistent exercise: lack of time, access to equipment, and motivational decline. It achieves this by offering a comprehensive library of high-intensity, bodyweight workouts that require just 1 to 10 minutes per day, making profound fitness transformation accessible anywhere, anytime. The app is engineered for universal appeal, catering to complete beginners seeking a gentle introduction to fitness as well as advanced athletes looking for efficient, equipment-free conditioning. Its intelligent foundation is built upon adaptive AI coaching, with virtual trainers Orion and Lyss providing personalized guidance that evolves with the user. Coupled with a robust gamification system featuring 32 unlockable milestones, RazFit ensures long-term engagement and celebrates every step of the fitness journey. By fully leveraging the latest iOS technologies, it offers a fluid, intuitive, and powerful platform that transforms fleeting minutes into lasting results, starting with an accessible 3-day free trial.
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.