RazFit vs Substy AI
Side-by-side comparison to help you choose the right product.
RazFit is your AI-powered trainer that delivers quick, effective bodyweight workouts anytime, anywhere, with 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 an innovative native iOS fitness application designed to revolutionize the way you approach your workouts. Built entirely in SwiftUI, RazFit provides high-intensity bodyweight exercises that can be completed in as little as 1 to 10 minutes a day, making it perfect for anyone, regardless of their fitness level. Whether you're a complete beginner or a seasoned athlete, RazFit offers a personalized experience through AI coaching with two virtual trainers, Orion and Lyss. These trainers assess your fitness level and dynamically adapt exercises to meet your individual needs. With a gamification system featuring 32 unlockable milestones, RazFit keeps you engaged and motivated throughout your fitness journey. The app is designed to be used anywhere—no gym or equipment required—allowing you to train at your own pace, whenever and wherever you want. Start your transformation today with a 3-day free trial, and discover how simple and effective fitness can be.
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.