RazFit vs Substy AI
Side-by-side comparison to help you choose the right AI tool.
RazFit is your AI trainer that creates personalized, equipment-free workouts you can do anywhere in minutes.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
RazFit is a revolutionary fitness app designed for the modern, busy individual who wants real results without the hassle of a gym. It's a 100% native iOS app built with SwiftUI, delivering a fast, smooth, and intuitive experience exclusively for iPhone and iPad users. The core promise is simple: transform your body with high-intensity, equipment-free workouts that take just 1 to 10 minutes of your day. RazFit eliminates all common barriers to fitness—no need for equipment, a gym membership, or large blocks of time. It personalizes your journey with AI-powered virtual coaches, Orion and Lyss, who evaluate your starting point and automatically adapt exercises to your evolving fitness level. To keep motivation sky-high, a robust gamification system with 32 unlockable achievement badges celebrates your progress throughout an entire year of training. Whether you're a complete beginner taking your first step or an advanced athlete looking for efficient bodyweight challenges, RazFit's scalable exercise modifications ensure a perfect fit. Start with a full-access 3-day free trial and experience a new standard in personalized, accessible, and effective fitness.
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.