RazFit vs Substy AI
Last updated: March 18, 2026
Visual Comparison
RazFit

Substy AI

Overview
About RazFit
RazFit is an innovative native iOS fitness app that harnesses the power of SwiftUI to deliver high-intensity bodyweight workouts designed for iPhone and iPad users. This app is perfect for individuals seeking quick yet effective workouts, with sessions ranging from just 1 to 10 minutes a day — no gym or equipment necessary. RazFit is tailored to all fitness levels, from complete beginners to seasoned athletes, ensuring everyone can benefit from its offerings. The standout feature of RazFit is its AI coaching, featuring two virtual trainers, Orion and Lyss, who assess your fitness level and adapt exercises to match your progress. With a gamification system that includes 32 unlockable milestones, users remain motivated throughout their training journey. RazFit is not just a workout app; it is a comprehensive fitness solution that promotes personal transformation in a user-friendly, accessible format.
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.