The Build System App vs Flexibull
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
The Build System App
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Welcome to The Build System, the official coaching app for Dino Camire (CSCS, CISSN) and Jen Oleson (BA, Adv. CPT). If your coach added you here, you're in the right place. Welcome if you've arrived from the app landing page. Enjoy your 30 day FREE trial. The Build System is organized around five pillars: Train, Fuel, Move, Measure, Belong. Your programs, nutrition guidance, and progress tracking all live here, built by your coach and backed by 35+ years of combined coaching experience. Real coaching. Real programs. Real results.
Flexibull
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Unlock your full potential with the ultimate strength training, yoga, and wellness app. Whether you're a seasoned athlete or just starting your fitness journey, our app provides you with a comprehensive library of training programs tailored to a variety of goals. From building muscle to enhancing flexibility, improving mobility, or finding inner peace, weβve got you covered. With our vast collection of self-guided workout programs, you can take charge of your fitness routine at your own pace. Our library includes beginner-friendly routines, intermediate challenges, and advanced strength training programs designed by professionals to help you progress effectively. Youβll have access to full-length yoga sessions, strength workouts, and holistic wellness practices, all in one place. Whether you prefer high-intensity strength training, calming yoga flows, or a balanced mix of both, thereβs something for everyone. The app also offers an extensive library of exercise and yoga demonstration videos, making it easy to learn new movements and refine your technique. Whether you're at home or on the go, the easy-to-follow videos help you improve your form, enhance your performance, and stay committed to your fitness goals. Track your progress and watch your transformation unfold with our built-in workout and nutrition tracking tools. Monitor your progress over time with detailed charts and data that show your improvements in strength, flexibility, and overall wellness. Additionally, track your macros and nutrition to ensure youβre fueling your body properly for optimal results. With smart watch integrations, track your heart rate, sleep, and activity levels, and get a complete view of your physical health in one convenient dashboard.
Screenshots
Verdict
The Build System App and Flexibull are too close to call on the numbers: across 6 compared parameters β price, update cadence, ads and in-app purchases among them β neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.
| Parameter | The Build System App | Flexibull |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details β not scored | ||
| Size | 71 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | One Family Fitness Centre | Flexibull Fitness |
In-app purchases
The Build System App
No in-app purchases
Flexibull
No in-app purchases
Questions
Is The Build System App free?
Is Flexibull free?
Do The Build System App or Flexibull have ads?
Which is updated more often, The Build System App or Flexibull?
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