RazFit vs Substy AI
Side-by-side comparison to help you choose the right AI tool.
RazFit is an AI-powered trainer offering quick, personalized, 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 an innovative fitness app specifically designed for iOS devices, including iPhone and iPad, built entirely using SwiftUI. It caters to individuals seeking efficient bodyweight workouts that can be completed in as little as one minute and up to ten minutes each day, making it ideal for those with busy schedules. RazFit eliminates the need for a gym or any equipment, allowing users to exercise anywhere at any time. The app features advanced AI coaching through two virtual trainers, Orion and Lyss, who assess individual fitness levels and dynamically adapt exercises to ensure optimal performance. With a gamified experience that includes 32 unlockable milestones, RazFit keeps users engaged and motivated throughout their fitness journey. Whether you are a beginner just starting or an advanced athlete looking to maintain your fitness, RazFit offers tailored workouts and progression options that suit all levels. Plus, with a seamless integration of iOS 18+ technologies, the app guarantees a fast and smooth user experience. Begin your transformation with a risk-free 3-day trial.
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.