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

Substy AI

Overview
About RazFit
RazFit is an innovative iOS fitness app meticulously crafted in SwiftUI, designed to cater to fitness enthusiasts of all levels, from beginners to seasoned athletes. Its primary aim is to deliver high-intensity bodyweight workouts that can be completed in just 1 to 10 minutes a day, eliminating the need for a gym or any special equipment. With AI coaching provided by two virtual trainers, Orion and Lyss, RazFit personalizes your fitness journey by assessing your fitness level and automatically adapting exercises to suit your needs. The app integrates a gamification system featuring 32 unlockable milestones that keeps users motivated throughout the year. Accessible and user-friendly, RazFit is perfect for busy individuals looking to transform their bodies efficiently while leveraging the latest iOS technologies for a seamless experience. Start your fitness journey with a 3-day free trial and see tangible results in no time.
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.