Principles In Action vs Lingoban
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.
Lingoban
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Practise German with the words and sentences you want to remember. Ask about a German word or sentence in a conversation. See translations, meanings, examples and language analysis. Save useful results as study cards, organise them in decks and folders, and review with audio and shadowing. Every German noun shows its der/die/das gender with a visual cue. Apple Standard 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 Lingoban's 5. Lingoban's advantage is update cadence (every 10 days vs every 3 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
Both are free to download. Lingoban sells 5 in-app purchases, starting at $9.00 per month. Principles In Action asks for nothing beyond the download.
Principles In Action ships an update every 3 months, Lingoban every 10 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | Principles In Action | Lingoban |
|---|---|---|
| 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 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 180 MB | 57 MB |
| Age rating | 9+ | 4+ |
| Developer | PRIOS, LLC | Wonyoung Seo |
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
Lingoban
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Principles In Action
No in-app purchases
Lingoban
- Lingoban Pro$9.001 Month
- Lingoban Pro$89.001 Year
- 30 image credits$4.00
- 100 image credits$10.00
- 300 image credits$25.00
Questions
Is Principles In Action free?
Is Lingoban free?
Do Principles In Action or Lingoban have ads?
Which is updated more often, Principles In Action or Lingoban?
Other comparisons
