100 Days to Fit

Complete Health & Wellness

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

A Stoic, science-based approach to 100 days of strength, cardio, and nutrition — personalized to your exact baseline, automatically calculated, built to actually finish. 100 Days to Fit is a science-based fitness program built for people who want real, personalized results — not generic workout plans. Rather than one-size-fits-all routines, 100 Days to Fit calculates your unique baseline using your body metrics and current fitness level, then builds a fully personalized 14-week periodized program around it — covering strength training, cardio, mobility, and nutrition. HOW IT WORKS - Measure — Enter your body metrics (age, height, weight, and primary goal) to establish your baseline. - Test — Complete a PAR-Q health screening and baseline strength/cardio testing (sample lifts and a 5KM time) to calibrate your personalized targets. - Start — Instantly see your calculated BMR, TDEE, calorie targets, and heart rate zones — all built from your own data. FULL PROGRAM FEATURES - A complete 14-week periodized strength and cardio schedule, structured week by week - A macro-based nutrition system with calorie targets and recipe/meal prep guidance - Mobility protocols to support recovery and long-term movement health - Progress tracking to log workouts and monitor results over time - Clear, animated exercise demonstrations for proper form on every movement DESIGNED WITH A STOIC MINDSET 100 Days to Fit pairs its training system with Stoic philosophy for motivation — helping you build discipline and consistency, not just chase short-term results. SIMPLE, ONE-TIME PRICING Explore the app for free, then unlock the full 14-week program with a single one-time purchase — no subscriptions, no recurring charges. No account or sign-in required. All your data stays on your device.

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The developer, Darwin Roscoe, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Information

    Seller
    Darwin Roscoe
    Size
    65.3 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    13+
    In-App Purchases
    Yes
    Copyright
    © 2026 Darwin Roscoe
  • Developer Website
  • Privacy Policy