Comparison

Principles In Action vs Mindstone

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

Mindstone

Learn and master in-demand AI skills for your career and business. Access curated content, join a community of experts, and track your progress with AI-powered insights. Upgrade for personalized coaching and skill certifications.

Highlights
  • Curated AI content library
  • Community-driven learning
  • Progress tracking and skill profiles
  • AI-powered coaching (Pro/Enterprise)
  • Personalized adaptive learning (Pro/Enterprise)
  • Renewable skill badges
Features
Read full description

Build and advance the skills you need to use AI for better results in your work, business and beyond. Mindstone combines unlimited curated AI content, structured programs, community-driven learning, and AI-powered features to make learning easy and effective. Stay up-to-date on relevant and in-demand AI skills across any industry.
 With Mindstone, you can: - Access up-to-date and diverse AI content automatically, ensuring you stay current and save time. - Engage with a community of AI experts and peers, participating in free events and collaborative learning experiences. - Track your progress and build a verifiable skill profile, showcasing your achievements and preparing you for career advancement. When you upgrade to Pro/Enterprise: - Receive AI-powered coaching and insights that are relevant to your job, company and industry. - Enjoy personalised, adaptive learning experiences, with structured programs, hands-on projects, and Daily Bites designed to meet your professional needs. - Earn renewable skill badges and customize your learning to for in-demand roles and align your AI education with your job, company, and industry requirements. So that you’ll: - Feel confident starting and advancing in your AI learning journey. - Keep your skills up-to-date and relevant through rapid changes in AI technology. - Quickly integrate AI into your projects to accelerate your business growth. - Effectively scale AI training across your large organisation to stay competitive. Popular AI skills others are building with Mindstone: - Prompt Engineering with LLMs - No-Code/Low-Code Workflow Automation - Building Automation Systems - Customising GPT Applications - And more... 
The Mindstone app is free to download, giving you access to a global community, events, and our library of over 100 practical AI talks, demos, and tutorials. With our Pro & Enterprise plans, businesses can quickly train their teams to integrate AI into their projects and impact overall business goals.

Screenshots

Principles In Action4 screens
Mindstone4 screens

Verdict

The call

The clearest difference is rating: Principles In Action at 4.9 against Mindstone's 4.0. Principles In Action also leads on in-app purchases (none vs 1) and review sentiment (80% vs 55%). Mindstone's advantage is update cadence (every 8 days vs every 2 months). On price, ads, device support and iOS requirement 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. Mindstone sells 1 one-off in-app purchase. Principles In Action asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Principles In Action holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: Principles In Action has 6.1K ratings behind it against 7, 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 55% of Mindstone's.

UpkeepUpdate frequency

Principles In Action ships an update every 2 months, Mindstone every 8 days. The most recent releases landed on September 24, 2026 and June 1, 2026 respectively.

Scorecard6 real differences · 4 level
Principles In Action versus Mindstone: the parameters behind the verdict, then further details
ParameterPrinciples In ActionMindstone
PriceFreeFree
Rating4.9 (6.1K ratings) — better4.0 (7 ratings)
Positive reviews80.3% of reviews — better54.5% of reviews
Number of ratings6.1K — better7
Update frequencyEvery 2 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size177 MB174 MB
Age rating9+4+
DeveloperPRIOS, LLCMindstone Learning limited

Customer experience

Principles In Action

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

Mindstone

All ratings7 ratings
Positive71.4%
Neutral14.3%
Negative14.3%
Written reviews11 reviews
Positive54.5%
Neutral18.2%
Negative27.3%

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

Mindstone

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Principles In Action

No in-app purchases

1 purchases

Mindstone

One-time1
  • AI Competency (self-serve)$39.99

Questions

Is Principles In Action free?
Principles In Action is free to download, with no in-app purchases.
Is Mindstone free?
Mindstone is free to download, with in-app purchases available.
Which has better reviews, Principles In Action or Mindstone?
Principles In Action is rated higher. Principles In Action averages 4.9 out of 5 from 6.1K ratings, while Mindstone averages 4.0 from 7 ratings.
Do Principles In Action or Mindstone have ads?
Neither Principles In Action nor Mindstone shows ads.
Which is updated more often, Principles In Action or Mindstone?
Principles In Action ships an update every 2 months, and Mindstone every 8 days. Most recently, Principles In Action was updated on September 24, 2026 and Mindstone on June 1, 2026.

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