Comparison

Principles In Action vs Durar

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

Durar

Gain powerful insights from influential books in minutes through concise Arabic and English summaries. Learn faster, think deeper, and build compounding knowledge with text and audio formats, personalized recommendations, and progress tracking.

Highlights
  • Concise book summaries
  • Arabic and English content
  • Text and audio formats
  • Personalized recommendations
  • Offline mode
  • Progress tracking
  • Badges and achievements
Features
Read full description

Fifteen minutes that are yours. Most days disappear into the scroll. Durar offers a small, calm alternative: one summary of a great non-fiction book, every day, in about fifteen minutes. Listen on the drive home. Read before bed. Not a course to finish. Not a reading list to feel behind on. One idea, properly — then back to your day a little clearer than you started it. ONE A DAY, CHOSEN FOR YOU Every day, one summary is free for everyone. No backlog. Nothing expiring. A quiet daily rhythm instead of a pile you owe. BOTH YOUR LANGUAGES, NOT ONE Every summary comes in Arabic and English, with audio in both. Read in one, listen in the other, switch whenever you like. Most apps make you choose. Durar doesn't. WHAT YOU GET • A free summary every day • Listen or read, whichever suits the moment • Full Arabic and English, with audio in both • Download for offline listening • Eighteen subjects: psychology, business, money, relationships, health, philosophy, spirituality, history and more WHY PEOPLE STAY Because it asks for fifteen minutes, not an hour. Because it moves between your two languages the way you do. And because finishing feels like rest, not homework. PREMIUM Open the full library, get recommendations shaped around what you actually read, save anything for offline, and follow your progress over time. Try monthly free for 14 days. Or go yearly and save over 50% on your first year. A pearl a day. That's all it asks. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://www.mydurar.com/terms-of-service Privacy Policy: https://www.mydurar.com/privacy-policy

Screenshots

Principles In Action4 screens
Durar4 screens

Verdict

The call

The clearest difference is in-app purchases: Principles In Action at none against Durar's 2. Principles In Action also leads on ratings volume (6.1K vs 1). Durar's advantage is update cadence (every 6 days vs every 3 months) and review sentiment (100% vs 80%). On price, rating, 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. Durar sells 2 in-app purchases, starting at $8.99 per month. Principles In Action asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Principles In Action against 5.0 for Durar. That said, the two scores are not equally well evidenced: Principles In Action has 6.1K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 80% of Principles In Action's written reviews are positive against 100% of Durar's.

UpkeepUpdate frequency

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

Scorecard5 real differences · 5 level
Principles In Action versus Durar: the parameters behind the verdict, then further details
ParameterPrinciples In ActionDurar
PriceFreeFree
Rating4.9 (6.1K ratings)5.0 (1 ratings) — better
Positive reviews80.3% of reviews100.0% of reviews — better
Number of ratings6.1K — better1
Update frequencyEvery 3 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.5 — better
Further details — not scored
Size180 MB84 MB
Age rating9+12+
DeveloperPRIOS, LLCDurar Digital LLC

Customer experience

Principles In Action

All ratings6,065 ratings
Positive98.0%
Neutral1.1%
Negative0.9%
Written reviews142 reviews
Positive80.3%
Neutral7.7%
Negative12.0%

Durar

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Durar

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Principles In Action

No in-app purchases

2 purchases

Durar

Subscriptions2
  • Durar Premium Monthly$8.991 Month
  • Durar Premium Yearly14 Days trial$69.991 Year

Questions

Is Principles In Action free?
Principles In Action is free to download, with no in-app purchases.
Is Durar free?
Durar is free to download, with in-app purchases available.
Which has better reviews, Principles In Action or Durar?
Durar is rated higher. Principles In Action averages 4.9 out of 5 from 6.1K ratings, while Durar averages 5.0 from 1 ratings.
Do Principles In Action or Durar have ads?
Neither Principles In Action nor Durar shows ads.
Which is updated more often, Principles In Action or Durar?
Principles In Action ships an update every 3 months, and Durar every 6 days. Most recently, Principles In Action was updated on November 6, 2026 and Durar on November 5, 2026.

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