# AuricLight System vs B3 U

The clearest difference is price: B3 U at Free against AuricLight System's $899.99. AuricLight System's advantage is in-app purchases (none vs 2). On update cadence, ads, device support and iOS requirement there is nothing between them.

B3 U is free to download; AuricLight System costs $899.99 up front. B3 U sells 2 in-app purchases, starting at $29.99 per month. AuricLight System asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 23, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | AuricLight System | B3 U |
| --- | --- | --- |
| Price | $899.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/b3-u/id6739257665/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Monetization | — | Subscription |
| Size | 12 MB | 64 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bettina Bernoth](https://appshunter.io/developer/1358261301) | [B3 Sciences](https://appshunter.io/developer/1558273345) |

## What reviewers say

### AuricLight System

[App page](https://appshunter.io/ios/app/auriclight-system-itrain/id1358261302)

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

**In-app purchases:** none


### B3 U

[App page](https://appshunter.io/ios/app/b3-u/id6739257665)

Revolutionize your fitness with Blood Flow Restriction (BFR) training. Access expert-led live workouts, personalized plans, and educational resources to achieve better results in less time. Connect with a supportive community and professional coaches.

**Highlights:** Expert-led live workouts, Custom training plans, BFR education and resources, Group coaching and community, Efficient workout routines, Progress tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $29.99 | per month |
| Yearly | $659.99 | per year |


## Frequently asked questions

### Is AuricLight System free?

AuricLight System costs $899.99, with no in-app purchases.

### Is B3 U free?

B3 U is free to download, with in-app purchases available.

### Do AuricLight System or B3 U have ads?

Neither AuricLight System nor B3 U shows ads.

### Which is updated more often, AuricLight System or B3 U?

AuricLight System ships an update every 5 weeks, and B3 U every 5 weeks. Most recently, AuricLight System was updated on September 23, 2026 and B3 U on September 17, 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.*