Comparison

Built With Science+ vs DeltaBody

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

Head to head
About

Built With Science+

This intelligent fitness companion offers personalized workout plans and nutrition advice based on scientific insights. It adapts to your progress with real-time feedback, providing guidance for continuous gains and informed health decisions.

Highlights
  • Hyper-Personalized Workouts
  • Progressive Overload Guidance
  • Real-Time Diet Adjustments
  • AI-Powered Meal Scanner
  • 250+ Exercise Tutorials
  • Daily Knowledge Boosters
  • AI Fitness & Nutrition Assistant
Features
Read full description

Reach your goals faster with BWS+ all-in-one fitness coach. Frustrated with cookie-cutter workout plans and confusing nutrition advice? BWS+ is your intelligent coach and complete fitness companion for achieving the body you've always wanted. The app integrates insights from leading fitness scientists, coaches, and dietitians, offering personalized advice based on your unique body and goals. It evolves with you, adapting your workouts and nutrition based on real-time feedback, encapsulating decades of experience into a dynamic coach that tailors itself to your needs. The latest science, personalized to you - Hyper-Personalized Workouts: Built with Science's advanced algorithm creates a workout plan specifically for your body, goals, and schedule. Whether you're hitting the gym or training at home, we've got you covered. - Progressive Overload Guidance: Never plateau again. BWS+ tells you exactly how to adjust your weights and reps each session for continuous gains. - Real-Time Diet Adjustments: As your body changes, so do your nutritional needs. Our app adapts your meal plan weekly, ensuring you're always on track. All-in-One Fitness and Nutrition Solution - 250+ In-Depth Exercise Tutorials: Master proper form with our detailed video guides, packed with science-based insights. - AI-Powered Meal Scanner: Say goodbye to tedious calorie counting. Simply snap a photo of your meal, and our AI does the rest, accurately tracking your nutrition in seconds. - Daily Knowledge Boosters: Unlock 200+ bite-sized lessons to build your fitness IQ and make informed decisions about your health. One App is All You Need - AI Fitness & Nutrition Assistant: Get personalized answers to your fitness and nutrition questions, as if you're talking directly to Jeremy Ethier. - Muscle Group Prioritizer: Focus on specific muscles that need extra attention for balanced development. - Recomp Detector: Track simultaneous fat loss and muscle gain with our advanced body composition analysis. - Step Tracking and Daily Activity Goals: Seamlessly integrate with Apple Health and Google Fit to optimize your overall activity levels. We've combined cutting-edge technology with years of scientific research to create an app that delivers real, lasting transformations. No more guesswork, no more wasted time in the gym. BWS+ provides the structure and guidance you need to finally achieve the body you deserve. Download now and take the first step towards the best version of yourself! This app requires an active BuiltWithScience+ membership or an in-app subscription purchased through the App Store to access its features and content. Subscription details and terms are available within the app.

About

DeltaBody

Features
Read full description

Truly know how your body is changing. DeltaBody is the ultimate tool for anyone who wants to understand their body composition with precision. Features: - Trend Analysis: Instantly see whether you’re losing fat or building valuable muscle mass. - Interactive Charts: Track weight, body fat, lean mass, and BMI in clear, visual graphs. - Compare Timeframes: Analyze your development with precision: from your last check-in to your entire journey. - Start & Target Values: Set clear goals and follow your path with visual target lines and progress bars. - Milestones: Your big goal is automatically broken down into motivating, bite-sized steps. - Share Success: Create stylish progress graphics in seconds and celebrate your journey with friends. - Apple Health Integration: Seamless data import from smart scales and quick manual entry. - Dark Mode Download DeltaBody now and start your transformation! DeltaBody is not a medical device and does not provide medical advice. The information displayed is for informational purposes only. Please consult a healthcare professional before making decisions based on your body composition data. Privacy Policy: https://kennethweber.de/apps/deltabody/privacy-policy/ Terms of Use: https://kennethweber.de/apps/deltabody/terms-of-use/

Screenshots

Built With Science+4 screens
DeltaBody4 screens

Verdict

The call

The clearest difference is update cadence: Built With Science+ at fortnightly against DeltaBody's every 2 months. Built With Science+ also leads on iOS requirement (16.2 vs 26.0). On price, ads, in-app purchases and device support 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. Built With Science+ sells 4 in-app purchases, starting at $29.99 per month and DeltaBody sells 8 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Built With Science+ ships an update fortnightly, DeltaBody every 2 months. The most recent releases landed on October 20, 2026 and September 24, 2026 respectively.

Scorecard2 real differences · 8 level
Built With Science+ versus DeltaBody: the parameters behind the verdict, then further details
ParameterBuilt With Science+DeltaBody
PriceFreeFree
Rating4.8 (4.5K ratings) — better—
Positive reviews79.8% of reviews—
Number of ratings4.5K — better—
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS16.2 — better26.0
Further details — not scored
Size233 MB6 MB
Age rating4+12+
DeveloperBuilt With Science Holdings CorpKenneth Weber

Bugs and requests

Built With Science+

Reported bugs

4 issues
  • Workout data sometimes gets lost or marked incomplete
  • App takes a long time to open
  • Login and sign-up issues for existing customers
  • Inconsistent exercise recommendations and adjustments

Requested features

5 requests
  • Add ability to create and save custom recipes
  • Integrate with Apple Health and other fitness platforms
  • Provide more flexibility in workout scheduling
  • Enhance human coaching and support features
  • Improve performance and stability

DeltaBody

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Built With Science+

Subscriptions2
  • Monthly Membership14 Days trial$29.991 Month
  • Annual Membership14 Days trial$189.001 Year
One-time2
  • Intermediate Program Unlock$49.00
  • Beginner Program Unlock$49.00
8 purchases

DeltaBody

Subscriptions2
  • Monthly$2.991 Month
  • Yearly$29.991 Year
One-time6
  • Nice Support$0.99
  • Small Support$2.99
  • Great Support$4.99
Show 3 more
  • Awesome Support$9.99
  • Generous Support$49.99
  • Incredible Support$99.99

Questions

Is Built With Science+ free?
Built With Science+ is free to download, with in-app purchases available.
Is DeltaBody free?
DeltaBody is free to download, with in-app purchases available.
Do Built With Science+ or DeltaBody have ads?
Neither Built With Science+ nor DeltaBody shows ads.
Which is updated more often, Built With Science+ or DeltaBody?
Built With Science+ ships an update fortnightly, and DeltaBody every 2 months. Most recently, Built With Science+ was updated on October 20, 2026 and DeltaBody on September 24, 2026.

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