Comparison

Principles In Action vs DigitalRay

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

Head to head
About

Principles In Action

Explore life and work principles from a renowned investor through interactive case studies, video footage, and assessments. Discover personalized guidance and compare insights with friends to achieve your goals.

Highlights
  • Interactive case studies
  • Behind-the-scenes video footage
  • PrinciplesYou Assessment
  • Personality test
  • Daily principle from Ray
  • Digital 'Coach' for principle guidance
  • Personal principle development section
Features
Read full description

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 during his time leading 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. • Read Ray's latest articles and reflections on the economy and markets. • Daily principle from Ray to help you get more out work and life. • Highlighted case-of-the-week and related principles. • Search function across all content in the app, including the full set of principles. • Converse with Digital Ray, Ray's AI twin which has been trained on tens of thousands of items from Ray's content library. • 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 Bill Gates, Arianna Huffington, Marc Benioff, Mark Cuban, Mike Bloomberg, Gwyneth Paltrow, Kevin Systrom, Jamie Dimon, and others.

About

DigitalRay

Access personalized coaching and guidance based on Ray Dalio's principles for personal development, problem-solving, and decision-making. Learn to enhance self-awareness, manage people effectively, and navigate entrepreneurship with practical insights.

Highlights
  • Personalized coaching
  • Goal setting and career development
  • Problem-solving and decision-making
  • Self-awareness and mistake management
  • People and talent management
  • Entrepreneurship and business guidance
Read full description

Product Concept: Digital Ray distills and personalizes Ray Dalio’s extensive knowledge and expertise, offering individuals direct access to his insights in a highly interactive and practical way. Target Audience: Digital Ray is designed to assist people from various backgrounds, including those interested in understanding Ray Dalio's principles and individuals looking for insights into life, work, and investing. It can also be useful for those who want to apply a principled-thinking approach to their personal and professional lives. Digital Ray is currently focused on providing guidance related to life and work, future updates are anticipated to draw on Ray’s decades of experience as a global macro investor to provide tailored advice based on his investment and economic principles. For now, you’ll find Digital Ray can provide personalized coaching or guidance on a variety of topics, such as: 1. Personal development and goal setting, including career development and planning 2. Problem-solving and effective decision-making, and specifically how to balance logic and intuition and navigate different perspectives 3. Self-awareness, including understanding your own strengths and weaknesses and how to approach mistakes and failures 4. People management as it relates to understanding team dynamics, conflict resolution, and delegating work 5. Talent Management and hiring, firing, and transfer decisions 6. Entrepreneurship and business management, including organizational design and development, succession planning, and spotting and dealing with problems You can also ask Digital Ray questions related to Ray’s personal experience and preferences.

Screenshots

Principles In Action4 screens
DigitalRay4 screens

Verdict

The call

The clearest difference is rating: Principles In Action at 4.9 against DigitalRay's 4.2. Principles In Action also leads on ratings volume (6.1K vs 10) and review sentiment (80% vs 67%). DigitalRay's advantage is update cadence (monthly vs every 2 months). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Principles In Action holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: Principles In Action has 6.1K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 80% of Principles In Action's written reviews are positive against 67% of DigitalRay's.

UpkeepUpdate frequency

Principles In Action ships an update every 2 months, DigitalRay monthly. The most recent releases landed on September 24, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 6 level
Principles In Action versus DigitalRay: the parameters behind the verdict, then further details
ParameterPrinciples In ActionDigitalRay
PriceFreeFree
Rating4.9 (6.1K ratings) — better4.2 (10 ratings)
Positive reviews80.3% of reviews — better66.7% of reviews
Number of ratings6.1K — better10
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size177 MB33 MB
Age rating9+4+
DeveloperPRIOS, LLCVR OPCO LTD

Customer experience

Principles In Action

All ratings6,064 ratings
Positive98.0%
Neutral1.0%
Negative0.9%
Written reviews142 reviews
Positive80.3%
Neutral7.7%
Negative12.0%

DigitalRay

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Principles In Action

Reported bugs

4 issues
  • Frequent crashes
  • Inability to open book or case studies
  • Lost progress and saved data
  • Compatibility issues with older devices

Requested features

4 requests
  • Dark mode option
  • Ability to export user-added principles
  • Improved sync across devices
  • Better integration with book content

DigitalRay

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Principles In Action

No in-app purchases

None

DigitalRay

No in-app purchases

Questions

Is Principles In Action free?
Principles In Action is free to download, with no in-app purchases.
Is DigitalRay free?
DigitalRay is free to download, with no in-app purchases.
Which has better reviews, Principles In Action or DigitalRay?
Principles In Action is rated higher. Principles In Action averages 4.9 out of 5 from 6.1K ratings, while DigitalRay averages 4.2 from 10 ratings.
Do Principles In Action or DigitalRay have ads?
Neither Principles In Action nor DigitalRay shows ads.
Which is updated more often, Principles In Action or DigitalRay?
Principles In Action ships an update every 2 months, and DigitalRay monthly. Most recently, Principles In Action was updated on September 24, 2026 and DigitalRay on September 21, 2026.

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