RazFit vs Substy AI
Side-by-side comparison to help you choose the right product.
RazFit is your personalized AI trainer, offering effective bodyweight workouts that transform your fitness in just minutes a day, anywhere you are.
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 meticulously crafted in SwiftUI for both iPhone and iPad users. It offers a dynamic solution for individuals seeking high-intensity bodyweight workouts that can be completed in as little as 1 to 10 minutes each day, eliminating the need for a gym or any equipment. The app stands out for its integration of advanced AI coaching through two distinct virtual trainers, Orion and Lyss, who analyze users' fitness levels and automatically adjust exercises to cater to individual progress. Designed to motivate and engage, RazFit features a gamification system with 32 unlockable milestones, ensuring consistent encouragement throughout a year of training. With modifications available for each exercise, users can control their progression, making RazFit suitable for all fitness levels, from novices to seasoned athletes. Leveraging the latest iOS 18+ technologies, the app ensures a seamless and responsive user experience. Begin your journey with a risk-free 3-day trial and discover the transformative power of 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.