Comparison

Paul's Strength Book vs Flexibull

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

Head to head
About

Paul's Strength Book

Features
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Welcome to Paul's Strength Book, the ultimate training app for fitness enthusiasts! Our app is designed to help you achieve your fitness goals and maximize your gains. With weekly check-ins, progress tracking, RPE scale, weight tracking, and nutrition log, you'll stay motivated and on track to reach your fitness goals. Our comprehensive workout stats feature allows you to track your progress in real-time. You can easily monitor your performance, identify areas for improvement, and celebrate your successes. Our exercise video library provides detailed instructions and demonstrations for each exercise, ensuring that you perform each move with proper form and technique. But that's not all! Our app is packed with additional resources, including a macro calculator, recipes, eBooks, and so much more. With our macro calculator, you can easily calculate your daily caloric needs and macronutrient goals. Plus, our recipe and eBook resources provide meal ideas, inspiration, and motivation to help you stay on track. Key Features: Weekly check-ins Progress tracking RPE scale Weight tracking Nutrition log Workout stats Exercise video library Macro calculator Additional resources including recipes & eBooks Sync your account with HealthKit to track all your health and fitness data in one place including nutrition, steps and bodyweight. and much more… Get started on your fitness journey today with Paul's Strength Book!

About

Flexibull

Features
Read full description

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, we’ve 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. You’ll 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, there’s 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 you’re 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

Paul's Strength Book4 screens
Flexibull4 screens

Verdict

The call

Paul's Strength Book 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

ScorecardNo meaningful differences
Paul's Strength Book versus Flexibull: the parameters behind the verdict, then further details
ParameterPaul's Strength BookFlexibull
PriceFreeFree
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.1
Further details β€” not scored
Size76 MB78 MB
Age rating17+4+
DeveloperThe PBE Group PTY LTDFlexibull Fitness

In-app purchases

None

Paul's Strength Book

No in-app purchases

None

Flexibull

No in-app purchases

Questions

Is Paul's Strength Book free?
Paul's Strength Book is free to download, with no in-app purchases.
Is Flexibull free?
Flexibull is free to download, with no in-app purchases.
Do Paul's Strength Book or Flexibull have ads?
Neither Paul's Strength Book nor Flexibull shows ads.
Which is updated more often, Paul's Strength Book or Flexibull?
Paul's Strength Book ships an update fortnightly, and Flexibull fortnightly. Most recently, Paul's Strength Book was updated on November 7, 2026 and Flexibull on November 8, 2026.

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