Comparison

Starrett System vs Unbreakable by Dr. John Rusin

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Starrett System

This comprehensive 90-day fitness, movement, and nutrition program helps you build a functional, durable, and resilient body for life. It includes expert-led training, mobility and recovery sessions, nutrition guidance, and habit tracking tools.

Highlights
  • 90-day progressive strength and interval training
  • Mobility and recovery sessions
  • Macro-based nutrition guidance
  • Habit tracking and goal setting
  • Resource vault with pain protocols and recipes
  • Syncs with Health app
Features
Read full description

The Ultimate Fitness, Movement & Nutrition System for a Body Built to Last. The Starrett System isn’t just another workout plan. It’s an all-in-one system to help you reach the summit of your physical potential and lay the foundation for a life full of adventure, vitality, and everything that matters most to you. Designed by world-renowned physical therapist Dr. Kelly Starrett and world-champion athlete Juliet Starrett, creators of The Ready State and 3x New York Times bestselling authors, this comprehensive 90-day program goes beyond aesthetics, helping you build a functional, durable, and resilient body for life. What’s Inside: - Expert-Led Training: 3 months of progressive strength and interval training workouts, tailored to support durability and performance for every stage of life. - Mobility & Recovery Programming led by Dr. Kelly Starrett: sessions to optimize your workouts and address nagging pain. - Nutrition & Lifestyle Programming: Macro-based nutrition guidance, proven sleep strategies to enhance recovery, lifestyle and environment programming, supplement recommendations, and more. - Habit Tracking & Goal Setting: Tools to help you stay consistent and track progress. - Resource Vault: Resources you need to level up, including pain protocols, recipes, travel workouts, and more. - Sync with Health app to update your metrics instantly Designed for Longevity: This isn’t a quick-fix program—it’s your basecamp for life. Whether you're training to thrive in your 30s, 40s, 50s, or beyond, the system is built for busy professionals and parents, offering practical solutions that fit into your lifestyle. Why The Starrett System? Unlike typical fitness programs that focus solely on unsustainable aesthetics, The Starrett System helps you: - Implement a nutrition program that optimizes metabolic health and is sustainable for life - Build strength, power, and mobility - Optimize recovery for lifelong performance - Develop a body that you can count on for adventure and fun now and as you age This program equips you with the tools to play offense with your health, not defense.

About

Unbreakable by Dr. John Rusin

This app helps you train smarter and feel better with a pain-free performance system. Log workouts, track progress, and access expert coaching and exclusive resources to achieve your fitness goals without setbacks.

Highlights
  • Pain-Free Performance Training system
  • Track progress and view workouts
  • Expert coaching on demand
  • Exclusive training resources
  • Community discussion boards
  • Exercise library with tutorials
  • Flexible training schedules
Features
Read full description

Log your Pain-Free Performance training anytime, anywhere with Dr. John Rusin's Unbreakable App. Track your progress, view upcoming workouts, and connect with the community and get expert coaching on demand. Access exclusive resources to help you train smarter, feel better and achieve world class results. · Build strength, add muscle, improve mobility, and increase conditioning—all without pain or setbacks using the Pain-Free Performance Training programming system · Reclaim your movement and rebuild around pain using safe, strategic programming designed to keep you progressing while utilizing specific strategies to get out of pain, improve movement, and prepare your body to train · Avoid burnout, pain, setbacks, and performance plateaus by following strategically structured sessions that include warm-ups, well rounded training, and recovery for every workout that dial in your mobility, strength, muscle building, and conditioning · Fit your training to your lifestyle with flexible training scheduled 3,4,5+ times per week complete with training options for home, in your garage gym, or in a commercial fitness center · Access expert guidance from our team of expert Pain-Free Performance Specialist Certified coaches and other members via the discussion boards and community spaces to get feedback and advice for your journey · Share your journey with thousands of other members in the community and cheer on each other’s accomplishments on the leaderboard · Bonus resources like an exercise library featuring 2000+ exercises (each with a HOW-TO tutorial), nutrition support and recovery tips to maximize results Download Unbreakable today and start experience pain-free performance for the long run.

Screenshots

Starrett System4 screens
Unbreakable by Dr. John Rusin4 screens

Verdict

The call

The clearest difference is review sentiment: Unbreakable by Dr. John Rusin at 67% against Starrett System's 0%. Starrett System's advantage is rating (5.0 vs 3.4) and update cadence (every 3 weeks vs every 6 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Starrett System holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 6 and 12 respectively. Written reviews complicate that: 0% of Starrett System's written reviews are positive against 67% of Unbreakable by Dr. John Rusin's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Starrett System ships an update every 3 weeks, Unbreakable by Dr. John Rusin every 6 months. Both last shipped on October 30, 2026.

Scorecard4 real differences · 6 level
Starrett System versus Unbreakable by Dr. John Rusin: the parameters behind the verdict, then further details
ParameterStarrett SystemUnbreakable by Dr. John Rusin
PriceFreeFree
Rating5.0 (6 ratings) — better3.4 (12 ratings)
Positive reviews0.0% of reviews66.7% of reviews — better
Number of ratings612 — better
Update frequencyEvery 3 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size427 MB41 MB
Age rating4+4+
DeveloperThe Ready State Inc.John Rusin

Customer experience

Starrett System

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Unbreakable by Dr. John Rusin

All ratings12 ratings
Positive58.3%
Neutral0.0%
Negative41.7%
Written reviews9 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Starrett System

No in-app purchases

None

Unbreakable by Dr. John Rusin

No in-app purchases

Questions

Is Starrett System free?
Starrett System is free to download, with no in-app purchases.
Is Unbreakable by Dr. John Rusin free?
Unbreakable by Dr. John Rusin is free to download, with no in-app purchases.
Which has better reviews, Starrett System or Unbreakable by Dr. John Rusin?
Starrett System is rated higher. Starrett System averages 5.0 out of 5 from 6 ratings, while Unbreakable by Dr. John Rusin averages 3.4 from 12 ratings.
Do Starrett System or Unbreakable by Dr. John Rusin have ads?
Neither Starrett System nor Unbreakable by Dr. John Rusin shows ads.
Which is updated more often, Starrett System or Unbreakable by Dr. John Rusin?
Starrett System ships an update every 3 weeks, and Unbreakable by Dr. John Rusin every 6 months. Most recently, Starrett System was updated on October 30, 2026 and Unbreakable by Dr. John Rusin on October 30, 2026.

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