RazFit vs Substy AI
Side-by-side comparison to help you choose the right tool.
RazFit is your AI trainer that creates quick, equipment-free workouts to transform your body in just minutes a day.
Last updated: March 18, 2026
Scale agency revenue. Automate chats, manage fans.
Visual Comparison
RazFit

Substy AI

Overview
About RazFit
RazFit is your personal, pocket-sized gym, designed for anyone who wants to get fit but struggles with a busy schedule. It's a beautifully crafted iOS app, built specifically for iPhone and iPad, that delivers powerful, high-intensity bodyweight workouts in just 1 to 10 minutes a day. Forget about expensive gym memberships, complicated equipment, or not having enough time. RazFit proves that real transformation can happen anywhere, anytime, using only your body weight. Whether you're a complete beginner taking your first fitness steps or an advanced athlete looking for a quick, effective routine, RazFit adapts to you. The app features intelligent AI coaches, Orion and Lyss, who guide you, evaluate your level, and automatically adjust exercises to match your progress. With a fun gamification system of 32 unlockable milestones, every workout feels like an achievement, keeping you motivated for an entire year. Start with a 3-day free trial and experience a fast, smooth, native iOS journey to a stronger, healthier you.
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.