# Principles In Action vs Lingoban

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.

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.

## The numbers

| Metric | Principles In Action | Lingoban |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (6.1K ratings)](https://appshunter.io/ios/app/principles-in-action/id1211294305/reviews)** | — |
| Number of ratings | **6.1K** | — |
| Positive reviews | 80.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 180 MB | 57 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [PRIOS, LLC](https://appshunter.io/developer/1211294304) | [Wonyoung Seo](https://appshunter.io/developer/1874742228) |

## What reviewers say

### Principles In Action

[App page](https://appshunter.io/ios/app/principles-in-action/id1211294305)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💡 Excellent content and resources
- 👍 Helpful for self-development and growth
- 🚀 Seamless integration with book
- 🤩 Life-changing insights

**What reviewers complain about**

- 🐛 Crashes and loading issues
- 🔒 Privacy concerns with data sharing
- 🔍 Difficulty accessing saved progress
- ⏱️ Slow app performance

**Reported bugs**

- Frequent crashes
- Inability to open book or case studies
- Lost progress and saved data
- Compatibility issues with older devices

**Requested features**

- Dark mode option
- Ability to export user-added principles
- Improved sync across devices
- Better integration with book content


### Lingoban

[App page](https://appshunter.io/ios/app/lingoban-learn-german/id6765884869)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lingoban Pro | $9.00 | per month |
| Lingoban Pro | $89.00 | per year |
| 30 image credits | $4.00 | one-time |
| 100 image credits | $10.00 | one-time |
| 300 image credits | $25.00 | one-time |


## Frequently asked questions

### Is Principles In Action free?

Principles In Action is free to download, with no in-app purchases.

### Is Lingoban free?

Lingoban is free to download, with in-app purchases available.

### Do Principles In Action or Lingoban have ads?

Neither Principles In Action nor Lingoban shows ads.

### Which is updated more often, Principles In Action or Lingoban?

Principles In Action ships an update every 3 months, and Lingoban every 10 days. Most recently, Principles In Action was updated on November 6, 2026 and Lingoban on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*