RazFit vs Substy AI
Side-by-side comparison to help you choose the right product.
RazFit is your AI trainer that guides you on a daily bodyweight journey to transform your body in minutes, no equipment needed.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit
Substy AI
Overview
About RazFit
Your transformation journey begins not with a daunting gym membership or a closet full of equipment, but with a single, powerful decision to start. RazFit is your companion on that journey, a native iOS fitness app meticulously crafted in SwiftUI to deliver a seamless, beautiful, and incredibly effective experience right on your iPhone or iPad. Designed for the real world where time is the most precious commodity, RazFit proves that monumental change doesn't require hours of effort. It delivers high-intensity, bodyweight workouts that fit into your life—anywhere, anytime, in just 1 to 10 minutes a day. This is fitness, reimagined for busy people who seek real, tangible results without compromise. At the heart of RazFit are your AI coaches, Orion and Lyss, who act as your personal guides, evaluating your level and intelligently adapting each session to push you just the right amount. With a gamified system of 32 unlockable milestones celebrating your every achievement, your motivation is built into the very fabric of your training. Whether you're taking your first step or are an advanced athlete seeking efficient conditioning, RazFit meets you where you are and charts a clear, personalized path to where you want to 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.