JuggernautAI is an AI strength-training coaching app for powerlifting, powerbuilding, and strongman, created by Chad Wesley Smith, founder of Juggernaut Training Systems, together with CTO Tim Arnold. The app builds an individualized program from a user's profile, including gender, age, strength level, training experience, and recovery capacity, and supports two to six training days per week.
The app's proprietary algorithms adapt training on every timescale: set-to-set and day-to-day based on logged RPE and readiness feedback, and week-to-week and block-to-block by adjusting intensity, frequency, periodization style, and exercise selection as it learns how the lifter responds. Features include a library of more than 300 exercises with instructional videos and coaching cues, a Meet Day Advisor that calculates powerlifting competition attempt selections, a warm-up planner, RPE calculator, plate-math tools, video Q&A, seminars, e-books, and a private community. The company states more than 250,000 lifters have used the app and cites a 4.9-star rating.
JuggernautAI is recommended for lifters who already have some experience with the squat, bench press, and deadlift, from beginner to elite competitors. Juggernaut Training Systems has operated as a strength-coaching company since 2009.
The app is available on iOS and Android and costs $34.99/month or $349.99/year, each with a two-week free trial.