RazFit vs Substy AI
Side-by-side comparison to help you choose the right tool.
RazFit is your essential AI trainer that delivers effective bodyweight workouts in minutes with no equipment required.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
RazFit is the essential, high-performance fitness solution engineered for the modern, time-constrained individual. It is a native iOS application, meticulously built with SwiftUI for iPhone and iPad, delivering a fast and seamless user experience that leverages the latest iOS 18+ technologies. This app eliminates every common barrier to consistent exercise. You do not need a gym, any equipment, or hours of free time. RazFit delivers scientifically-backed, high-intensity bodyweight workouts that are completed in just 1 to 10 minutes per day. Its core value proposition is providing maximum results with minimal time investment, making a transformative fitness routine not just possible, but absolutely necessary for anyone with a busy schedule. The app is designed for all fitness levels, from absolute beginners taking their first step to advanced athletes seeking efficient maintenance. With intelligent AI coaching, personalized workout adaptation, and a powerful gamification system, RazFit provides the structure, motivation, and guidance you must have to build a lasting fitness habit and achieve visible, tangible results.
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.