Comparison

Principles In Action vs Kuatomind

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

Kuatomind

Features
Read full description

One idea worth knowing. Every day. Kuatomind gives you a single, genuinely fascinating thing to think about each day — a piece of etymology, a forgotten life, a strange corner of history or science. One curated card. Not a feed. Not an endless trivia firehose. Something with real depth, a cited source, and that quiet "wait — really?" you will want to repeat at dinner. Open it for thirty seconds. Learn something true that most people do not know. Close it. That is the whole ritual — by design. WHAT MAKES IT DIFFERENT - One idea a day, curated — not generated by an algorithm chasing your attention. - Real depth — every card carries context and a cited source. We would rather be accurate than viral. - Nothing to doomscroll — there is no infinite feed here, on purpose. - Calm and curious — not self-help, not a trivia game. Simply something interesting, told well. FREE - A new idea every day, available in 9 languages - Save the cards you want to keep - Catch up on the last 7 days - Share beautifully designed cards - A gentle daily reminder, and a streak if you like keeping one KUATOMIND PRO - The complete archive — every idea ever published, not just the last week - Supports a small, independent, ad-free app Kuatomind has no ads and never will. It needs no account, and it does not track you or sell data. For the curious — people who would rather have one high-signal moment than an hour of scroll. Open your mind, daily. Terms of Use (EULA): https://pinyinpals.github.io/kuatomind-legal/terms/ Privacy Policy: https://pinyinpals.github.io/kuatomind-legal/privacy/

Screenshots

Principles In Action4 screens
Kuatomind4 screens

Verdict

The call

The clearest difference is in-app purchases: Principles In Action at none against Kuatomind's 2. Kuatomind's advantage is update cadence (every 5 days vs every 3 months) and iOS requirement (13.0 vs 16.0). On price, ads and device support 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. Kuatomind sells 2 in-app purchases, starting at $2.99 per month. Principles In Action asks for nothing beyond the download.

UpkeepUpdate frequency

Principles In Action ships an update every 3 months, Kuatomind every 5 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Principles In Action versus Kuatomind: the parameters behind the verdict, then further details
ParameterPrinciples In ActionKuatomind
PriceFreeFree
Rating4.9 (6.1K ratings) — better—
Positive reviews80.3% of reviews—
Number of ratings6.1K — better—
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.013.0 — better
Further details — not scored
Size180 MB22 MB
Age rating9+4+
DeveloperPRIOS, LLCZet Studios Inc

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

Kuatomind

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Principles In Action

No in-app purchases

2 purchases

Kuatomind

Subscriptions2
  • Pro — Monthly$2.991 Month
  • Pro — Annual$24.991 Year

Questions

Is Principles In Action free?
Principles In Action is free to download, with no in-app purchases.
Is Kuatomind free?
Kuatomind is free to download, with in-app purchases available.
Do Principles In Action or Kuatomind have ads?
Neither Principles In Action nor Kuatomind shows ads.
Which is updated more often, Principles In Action or Kuatomind?
Principles In Action ships an update every 3 months, and Kuatomind every 5 days. Most recently, Principles In Action was updated on November 6, 2026 and Kuatomind on October 31, 2026.

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