# BGI vs PrincipleX

The clearest difference is in-app purchases: BGI at none against PrincipleX's 5. BGI also leads on iOS requirement (9.0 vs 18.0). PrincipleX's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. PrincipleX sells 5 in-app purchases, starting at $2.99 per month. BGI asks for nothing beyond the download.

BGI ships an update every 5 months, PrincipleX every 3 weeks. The most recent releases landed on October 12, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | BGI | PrincipleX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/principlex-principles-and-notes/id6479702612/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Paid |
| Size | 46 MB | 5 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [武汉欣诚择科技有限公司](https://appshunter.io/developer/1164378656) | [旭 夏](https://appshunter.io/developer/1494807611) |

## What reviewers say

### BGI

[App page](https://appshunter.io/ios/app/bgi-eam/id1506873566)

**Features:** macOS Compatibility

**In-app purchases:** none


### PrincipleX

[App page](https://appshunter.io/ios/app/principlex-principles-and-notes/id6479702612)

Capture, reflect on, and grow with your personal principles. This app helps you organize your guiding beliefs and build the habit of living by them through daily reminders and journaling.

**Highlights:** Create and organize personal principles, Manage principles with folders and tags, Daily principle practice reminders, Reflective journaling for personal growth, Pin important principles for daily focus, iCloud sync across devices

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $2.99 | per month |
| Annual Plan | $14.99 | per year |
| A Coffee | $1.00 | one-time |
| Signature Color | $3.00 | one-time |
| Lifetime Access | $9.99 | one-time |


## Frequently asked questions

### Is BGI free?

BGI is free to download, with no in-app purchases.

### Is PrincipleX free?

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

### Do BGI or PrincipleX have ads?

Neither BGI nor PrincipleX shows ads.

### Which is updated more often, BGI or PrincipleX?

BGI ships an update every 5 months, and PrincipleX every 3 weeks. Most recently, BGI was updated on October 12, 2026 and PrincipleX on October 4, 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.*