Principles In Action

4.3
715 reviews
500K+
Downloads
Content rating
Teen
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About this app

Principles In Action is a free app that brings to life Ray Dalio’s best-selling book Principles: Life & Work. It combines the complete text of the book with behind-the-scenes video footage and interactive case studies of the principles in action at his company Bridgewater Associates.
 
Ray is one of the world’s most successful investors and entrepreneurs, and he’s sharing the unconventional principles that helped him create unique results in life and business because he believes they can help any person or organization better achieve their goals.
 
In addition to the book and supporting cases, the app also includes:
 
*Take the PrinciplesYou Assessment in app to view results and add friends to compare.
 
*Compare your assessment with your friends’ and see their results.
 
*Take the personality test from the app.
 
* Daily principle from Ray to help you get more out of life
 
* Highlighted case-of-the-week and related principles
 
* Search function across all content in the app, including the full set of principles
 
* Digital “Coach” to help you easily find the appropriate principles for specific situations you face
 
* Dedicated section in the app for you to highlight, favorite, develop and record your own and others’ principles
 
* Additional content from Ray including studies on economics along with regular long form articles published on social media
 
Principles: Life & Work has been recommended by numerous leaders from all walks of life such as Bill Gates, Arianna Huffington, Marc Benioff, Mark Cuban, Mike Bloomberg, Gwyneth Paltrow, Kevin Systrom, Jamie Dimon, and many others.
Updated on
28 Aug 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, App activity and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
704 reviews
Kirtiman Sharma
1 July 2025
Best content, app not so much. I dont know why the app has to download content everytime I open it. it takes several minutes to open the app and the first screen is Downloading latest content for you. This is nlt a great user experience for me.
4 people found this review helpful
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Justin W
9 October 2024
I appreciate all the free content, but as far as the app itself goes, it leaves much to be desired. The long load times with nothing but a blank screen to stare at are baffling, as it's mostly just loadingtext data. There's apparently no ability to change the font size, and it's quite minuscule in some sections of the app. An easy to add and helpful inclusion would be text to speech. Many people these days enjoy having books read to them while they walk and do other things.
8 people found this review helpful
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Justin Nevins
3 May 2021
Great app. Though, a few issues. Opening links that I previously saved in order to come back to a particular principle sometimes takes me to a random one instead of the one I intended. Also, I have never gotten the 'Ask Coach' feature to work...It just loads continually. Otherwise, absolutely great content & good app.
47 people found this review helpful
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What's new

"Identify and don't tolerate problems"

Thanks for using Principles In Action! This release brings Android 15 support and bug fixes that improve our product.