Principles In Action vs DigitalRay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Principles In Action | DigitalRay |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (6.1K ratings) — better | 4.2 (10 ratings) |
| Positive reviews | 80.3% of reviews — better | 66.7% of reviews |
| Number of ratings | 6.1K — better | 10 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 177 MB | 33 MB |
| Age rating | 9+ | 4+ |
| Developer | PRIOS, LLC | VR OPCO LTD |
Customer experience
Principles In Action
DigitalRay
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
Principles In Action
No in-app purchases
DigitalRay
No in-app purchases
Questions
Is Principles In Action free?
Is DigitalRay free?
Which has better reviews, Principles In Action or DigitalRay?
Do Principles In Action or DigitalRay have ads?
Which is updated more often, Principles In Action or DigitalRay?
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