Principles In Action vs Fabelly
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.
Fabelly
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Fabelly turns screen time into meaningful learning. Your child becomes the main character in personalized, interactive stories and discovers social-emotional skills through play. WHAT MAKES FABELLY SPECIAL? Your child creates their own world – with robots, fairies, dragons, or explorers – and experiences stories where they are the hero. Through real AI conversations, they learn empathy, sharing, kindness, and emotional regulation – without being lectured. KEY FEATURES: • Personalized stories – Your child is the main character with their own name and appearance • Interactive AI conversations – No multiple-choice quizzes, real dialogue that adapts • Social-emotional learning (SEL) – Empathy, sharing, conflict resolution, emotional regulation, and more • Safe-to-fail environment – Children try situations and see consequences without real-world harm • Custom worlds – 5 themed worlds or create entirely custom ones • Choose a companion – Parent, pet, or favorite toy as story companion WHO IS FABELLY FOR? • Children ages 3-7 • Parents seeking meaningful screen time • Families following gentle, Montessori, or attachment parenting approaches • Children who want to practice social skills through play SAFETY & PRIVACY: • Ad-free • GDPR-compliant and child-safe • No data sharing • Age-appropriate content • Parental controls Fabelly – Social skills aren't taught. They're discovered. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Principles In Action at none against Fabelly's 2. On price, update cadence, 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
Both are free to download. Fabelly sells 2 in-app purchases, starting at $6.99 per month. Principles In Action asks for nothing beyond the download.
Principles In Action ships an update every 2 months, Fabelly every 3 months. The most recent releases landed on September 28, 2026 and September 17, 2026 respectively.
| Parameter | Principles In Action | Fabelly |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (6.1K ratings) — better | — |
| Positive reviews | 80.3% of reviews | — |
| Number of ratings | 6.1K — better | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 177 MB | 43 MB |
| Age rating | 9+ | 4+ |
| Developer | PRIOS, LLC | smartdings GmbH |
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
Fabelly
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Principles In Action
No in-app purchases
Fabelly
- Premium Monthly$6.991 Month
- Premium Annual$69.991 Year
Questions
Is Principles In Action free?
Is Fabelly free?
Do Principles In Action or Fabelly have ads?
Which is updated more often, Principles In Action or Fabelly?
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