Dr. Muscle

Dr. Muscle is an AI-powered personal trainer mobile app for fitness enthusiasts, serious lifters, and bodybuilders who want personalized hypertrophy and strength programs that adapt to performance.

Key capabilities include:

• Real-time workout adjustments that recalculates training recommendations when sets feel too easy or too hard, using performance inputs to update upcoming work.
• Evidence-based programming automation, including Daily Undulating Periodization (DUP), reps in reserve (RIR-based RPE), deloads, and rest-pause sets.
• Customization and flexibility, with a program builder to add exercises and adjust reps, sets, and rest, plus support for home workouts using bodyweight or limited equipment.
• Progress and coaching tools, such as progress reports, body fat tracking, AI chat coaching (noted as beta in updates), and optional calorie and macro coaching.

Pricing: Freemium, with a 2-week free trial of premium features. The free plan offers one daily exercise recommendation; Premium is $48.99 to $49.99 per month or $399.99 per year, with an optional meal plan add-on at $18.99 per month.

Notable for its focus on automated, research-driven strength programming and adaptive progression, plus cross-device syncing and integrations with smartwatches and health apps. Founded by Dr. Carl Juneau (2016).