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Built With Science+

Built With Science+

Science-Backed Fitness

3.3K ratings
760 reviews
💪 Health & Fitness
Free
In-App Purchases

Details

  • Released
  • Updated
  • January 29, 2024
  • August 26, 2026

Features

Developer

Built With Science Holdings Corp
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🧾$49.00
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About

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.

✓Hyper-Personalized Workouts
✓Progressive Overload Guidance
✓Real-Time Diet Adjustments
✓AI-Powered Meal Scanner
✓250+ Exercise Tutorials
✓Daily Knowledge Boosters
✓AI Fitness & Nutrition Assistant
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What users say

Summarized from real user reviews of Built With Science+. Based on 3.3K reviews and a 4.8/5 average, it highlights the 7 positives and 5 negatives reviewers mention most about this Health & Fitness app.

Positive things

  • 👍Comprehensive fitness and nutrition tracking
  • 🚀Convenient all-in-one app
  • 📚Helpful educational lessons
  • 💪Science-backed program
  • 🎯Customized and adaptive workouts
  • 🔍Accurate food scanning and nutrition logging
  • 🧠Intelligent progress tracking and recommendations

Negative things

  • 🐛Occasional performance issues and bugs
  • 🔍Limited food database and recipe options
  • 📱Lack of integration with other fitness apps and devices
  • 🕰️Inflexible workout scheduling
  • 💬Limited human interaction and coaching support
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+1

What's New in Built With Science+

3.21.3

August 26, 2026

- Nutrition label scanner now supports international labels - Grocery price tracker (US Only) - Exercise history is now editable - New workout library to view and edit workout plans - Ability to backdate progress pictures - Improved meal copying experience - New exercises, including support for assisted variations like assisted pull-ups and dips - Duplicate recipes to create variations without starting from scratch

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Subscription plans

Monthly Membership

Membership billed monthly

$29.991 Month
14 Days trial
Price Updates
August 28, 2026→$29.99
September 29, 2024→$29.99
September 5, 2024→$19.99
How to cancel Built With Science+ subscription ⁉️
2

In-App Purchases

$49.00

Intermediate Program Unlock

Built With Science Intermediate Program

User reviews

Most RecentHighest RatedLowest Rated

Removes the guesswork

Note: I am a beginner (~1 year of lifting), so my review may differ from yours.

I previously tried building my own program with YouTube videos and used macro factor for nutrition tracking. I ended up not making the progress I wanted, so I gave this one a try after ~9 months.

I really like the hand holding that it provides: I don’t need to guess when I need to increase the reps or weight, the app does it for me. Creating my program was easy thanks to the onboarding quizz. I learned a bunch of info with their built-in lessons. Some were known because i watched a lot of content saying the same thing. But if you’re a complete beginner it might be eye opening on all the basics.
The nutrition tracking works great but the database feels less complete than macro factor, even though it’s getting better. Especially in Europe. We can feel it being somewhat US-centric and having a growing international user base.

It feels like a great combo of everything to me. The embedded AI helper sometimes fumbles (as all AIs do), but overall it answers the questions I ask and gives good advice for basic stuff. It having access to my data is a plus, when it’s smart enough to actually use it instead of guessing.

I have not tried other « all in one » competitor training apps, but I’m happy with this one!
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XooksXooks

Response from developer

Hello! Thank you for such a thoughtful and detailed review! We’re thrilled the personalized progression, onboarding, lessons, and AI support have been helpful. We also appreciate your feedback about the food database and international coverage, especially in Europe, and will share it with our team. Please contact us at support@builtwithscience.com if we can assist you!

Great all-in-on platform

I love that the app is easy to use and it has everything you need all in one app. And I also love that for the workouts you can substitute exercises when accommodating for injury or lack of equipment. It’s great!!
Miss AMDSMiss AMDS

Response from developer

Hello! We’re so glad you’re enjoying the app’s simplicity and all-in-one approach! It’s great to hear that exercise substitutions are helping you adapt your workouts to your needs and available equipment. Thank you for the wonderful feedback! Please contact us at support@builtwithscience.com if we can assist you!

Yes! Finally a fitness app that…

Finally, an app that is functional and what the majority of us need weightlifting.
still not that guystill not that guy

Solid app

Love the nutrition and fitness all in one app. Love the daily check ins. Don’t love the exercise programs the app offers. If you pick a target muscle group the program doesn’t target that muscle group. No auto update of exercises after a certain period of time to keep processing. The AI workout generator doesn’t work. If they fix these issues it’s a 5 star app and I will continue using them for many years!
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Response from developer

Hello! Thank you for the amazing review! 🎉 We’re thrilled to hear you’re enjoying the app. Your support motivates us to keep improving and delivering the best experience possible. If there’s ever anything we can do for you, don’t hesitate to reach out! Best, The Built With Science Team

Slowly but Surely

This app is slowly but surely changing my life. I have always followed Jeremy’s videos on YouTube and this is just an extension of his vision helping people like me who struggle with consistency. Still long ways to go but I am getting better.
Mochop1Mochop1
See 755 more reviews

User experience

🐞

Reported Bugs

4 issues

Workout data sometimes gets lost or marked incomplete

Bug

App takes a long time to open

Bug

Login and sign-up issues for existing customers

Bug

Inconsistent exercise recommendations and adjustments

Bug
✨

Requested Features

5 requests

Add ability to create and save custom recipes

Feature

Integrate with Apple Health and other fitness platforms

Feature

Provide more flexibility in workout scheduling

Feature

Enhance human coaching and support features

Feature

Improve performance and stability

Feature

FAQ

What does Built With Science+ do?

Built With Science+ acts as an intelligent, all-in-one fitness coach. It provides hyper-personalized workout plans and real-time diet adjustments based on scientific insights and your individual progress. The app aims to help users reach their fitness goals faster by removing guesswork and providing structured guidance.

What are the key features of Built With Science+?

Key features include hyper-personalized workouts tailored to your body and goals, progressive overload guidance to prevent plateaus, real-time diet adjustments, an AI-powered meal scanner for easy nutrition tracking, over 250 exercise tutorials, daily knowledge boosters, and an AI fitness and nutrition assistant for personalized answers.

How much does Built With Science+ cost?

Access to the features and content of Built With Science+ requires an active membership or an in-app subscription purchased through the App Store. Specific subscription details and terms are available within the app itself.

What devices is Built With Science+ compatible with?

The application description mentions seamless integration with Apple Health and Google Fit for step tracking and daily activity goals, suggesting compatibility with iOS and Android devices. An active membership or in-app subscription is required to use its features.

Who is Built With Science+ designed for?

This app is designed for individuals who are frustrated with generic fitness plans and confusing nutrition advice. It's for those who want a science-backed, intelligent coach that adapts to their unique body, goals, and progress to achieve lasting transformations.