Washington University Skandalaris Center · Feb 2025
University coverage of Ryan Richt and the launch of BODYSIM, including the product’s digital twin positioning and subscription model.
Gain Muscle and Shed Fat with a Digital Twin of Your Body
Company research
Public company, workplace, funding, and market signals
Overview
BODYSIM is Well Principled’s consumer fitness and health-optimization product: a digital-twin app that fuses body-composition, wearable, food, and blood-panel data to forecast outcomes and prescribe workouts and meal plans.
Founded
2018
Headquarters
St. Louis, Missouri, United States
Team size
1-10
Industry
Technology, Information and Internet
Sub-industry
AI-powered fitness and health optimization software
Offices
St. Louis, Missouri, United States
Business model
subscription
direct-to-consumer
software-plus-hardware bundle
Funding
Stage
seed
Total raised
$2.7M
Latest round
Grant · Oct 2020
Latest amount
$50K
People & investors
Leadership
Founder & CEO
Co-Founder & Principal Platform Engineer
Co-Founder & Principal Engagement Engineer
Strategic Adviser
Chair of Science Advisory Board
Founders
Co-Founder
Work & culture
Public materials suggest a science-led, highly technical, self-experimentation-heavy culture focused on translational research, quantitative rigor, and performance optimization for fitness users.
Product & market
Pricing
Paid consumer subscription service with a large upfront fee plus recurring monthly subscription; public pricing has been listed at $1,599 to start plus $239/month, and support documentation also references a $5,000/year system price.
Differentiators
- —body digital twin built from multiple sensor inputs
- —prescriptive workouts and meal plans driven by simulation
- —fitness forecasting and what-if scenario planning
- —bundled onboarding hardware and scan-based measurement workflow
- —overtraining protection and adaptive plan updates
- —science-based model of macronutrient balance and muscle hypertrophy
Technology
digital twin simulation
sensor fusion
metabolism and physiology modeling
Apple Health integration
Withings Body Scan scale
DEXA scan workflows
3D body scans
blood panel biomarker tracking
macronutrient modeling
AI-driven adaptation
iOS app
barcode and label meal logging
Customers
serious fitness enthusiasts
health and fitness enthusiasts
beginners in wellness journeys
consumers focused on muscle gain and fat loss
Scale & contact
Estimated revenue
≈$630k/year (third-party Growjo estimate)
Estimated monthly visits
1.8K
Traffic estimate as of Sep 2025
Latest news
St. Louis Magazine · Feb 2025
Local coverage of the launch, team size, testing process, pricing, and the app’s use of scans, blood panels, and exercise guidance.
PR Newswire · Feb 2025
Official launch announcement describing BODYSIM’s digital-twin fitness platform, St. Louis launch, product features, pricing, and founder commentary.
Y Combinator
YC launch page describing the product overhaul into a fitness forecasting system and summarizing the body-modeling workflow and bundled subscription experience.
Jobs and careers at BODYSIM by Well Principled
0 jobs at BODYSIM by Well Principled
No open positions
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