Comparison

Kettlebell Functional Training 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

Kettlebell Functional Training

Achieve your fitness goals with custom workout programs designed for an integrated, balanced approach. This app focuses on varied exercises to prevent injuries and plateaus, maximizing your results and motivating you to move, look, and feel your best.

Highlights
  • Custom workout programs
  • Integrated, balanced approach
  • Exercise variety
  • Injury risk minimization
  • Plateau prevention
  • Motivation tools
Features
Read full description

Move, look and feel your best with I.A.H. Functional training. An integrated, balanced approach to custom workout programs created to educate and motivate you. Constantly focusing on different outcomes and through constant changing of the types of exercises performed, integrated training can minimize the risk of overuse injuries and hitting a plateau thus maximizing results. Standard Apple's terms of service apply: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://integrityattitudehustle.ymove.app/privacy-policy-app

About

Unbreakable by Dr. John Rusin

Train smarter and feel better with a system designed to build strength, improve mobility, and increase conditioning without pain. Access expert coaching, track progress, and connect with a supportive community. Includes an extensive exercise library and flexible scheduling for any fitness environment.

Highlights
  • Pain-Free Performance Training system
  • Track progress and view upcoming workouts
  • Expert coaching on demand
  • Community discussion boards and spaces
  • Exercise library with 2000+ tutorials
  • Flexible training schedules
  • Nutrition and recovery support
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

Kettlebell Functional Training4 screens
Unbreakable by Dr. John Rusin4 screens

Verdict

The call

The clearest difference is rating: Kettlebell Functional Training at 4.8 against Unbreakable by Dr. John Rusin's 3.2. Kettlebell Functional Training also leads on ratings volume (280 vs 13) and update cadence (every 2 months vs every 5 months). Unbreakable by Dr. John Rusin's advantage is in-app purchases (none vs 8). On price, ads, device support and iOS requirement 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. Kettlebell Functional Training sells 8 in-app purchases, starting at $19.99 per month. Unbreakable by Dr. John Rusin asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Kettlebell Functional Training holds the better App Store score, 4.8 against 3.2. That said, the two scores are not equally well evidenced: Kettlebell Functional Training has 280 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 71% of Kettlebell Functional Training's written reviews are positive against 60% of Unbreakable by Dr. John Rusin's.

UpkeepUpdate frequency

Kettlebell Functional Training ships an update every 2 months, Unbreakable by Dr. John Rusin every 5 months. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard6 real differences · 4 level
Kettlebell Functional Training versus Unbreakable by Dr. John Rusin: the parameters behind the verdict, then further details
ParameterKettlebell Functional TrainingUnbreakable by Dr. John Rusin
PriceFreeFree
Rating4.8 (280 ratings) — better3.2 (13 ratings)
Positive reviews70.6% of reviews — better60.0% of reviews
Number of ratings280 — better13
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.615.0 — better
Further details — not scored
Size96 MB41 MB
Age rating4+4+
DeveloperAdriell MayesJohn Rusin

Customer experience

Kettlebell Functional Training

All ratings280 ratings
Positive96.4%
Neutral1.8%
Negative1.8%
Written reviews17 reviews
Positive70.6%
Neutral11.8%
Negative17.6%

Unbreakable by Dr. John Rusin

All ratings13 ratings
Positive53.8%
Neutral0.0%
Negative46.2%
Written reviews10 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

Bugs and requests

Kettlebell Functional Training

Reported bugs

4 issues
  • 🐛 Program week missing days
  • 🐛 Some videos don't pop up
  • 🐛 Videos not edited to show exact flow
  • 🐛 In-app videos don't work for some plans

Requested features

7 requests
  • 💡 Ability to favorite exercises
  • 💡 Input kettlebell weight and track progression
  • 💡 Recommended beginner weights/tiers
  • 💡 Recommended RPE per set
  • 💡 Coaching cues for exercises
Show 2 more
  • 💡 Specific order/sequence for routines
  • 💡 App update and bug fixes

Unbreakable by Dr. John Rusin

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Kettlebell Functional Training

Subscriptions1
  • Memberships1 Month trial$19.991 Month
One-time7
  • Single Kettlebell Program$79.99
  • Single-kettlebell Circuit$79.99
  • Mobility & Kettlebell Flows$84.99
Show 4 more
  • Single Kettlebell Functional$89.99
  • Functional Muscle Building$99.99
  • Kettlebells & Bodyweight$99.99
  • Posterior Chain Strength$99.99
None

Unbreakable by Dr. John Rusin

No in-app purchases

Questions

Is Kettlebell Functional Training free?
Kettlebell Functional Training is free to download, with in-app purchases available.
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, Kettlebell Functional Training or Unbreakable by Dr. John Rusin?
Kettlebell Functional Training is rated higher. Kettlebell Functional Training averages 4.8 out of 5 from 280 ratings, while Unbreakable by Dr. John Rusin averages 3.2 from 13 ratings.
Do Kettlebell Functional Training or Unbreakable by Dr. John Rusin have ads?
Neither Kettlebell Functional Training nor Unbreakable by Dr. John Rusin shows ads.
Which is updated more often, Kettlebell Functional Training or Unbreakable by Dr. John Rusin?
Kettlebell Functional Training ships an update every 2 months, and Unbreakable by Dr. John Rusin every 5 months. Most recently, Kettlebell Functional Training was updated on November 3, 2026 and Unbreakable by Dr. John Rusin on November 5, 2026.

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