# GuardBJJ vs SONA VNS

The clearest difference is iOS requirement: SONA VNS at 15.1 against GuardBJJ's 18.2. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | GuardBJJ | SONA VNS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/sona-vns/id6756424780/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | — | Free |
| Size | 20 MB | 120 MB |
| Requires iOS | 18.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Oisin Mulligan](https://appshunter.io/developer/1704491386) | [Mindspire Limited](https://appshunter.io/developer/1586140980) |

## What reviewers say

### GuardBJJ

[App page](https://appshunter.io/ios/app/guardbjj/id6744692681)

**Features:** macOS Compatibility

**In-app purchases:** none


### SONA VNS

[App page](https://appshunter.io/ios/app/sona-vns/id6756424780)

This app guides personalized, non-invasive vagus nerve stimulation sessions to support relaxation, sleep, and cognitive function. It tracks progress with analytics and integrates with wearables for deeper insights into your wellness journey.

**Highlights:** Personalized journey sessions, Daily taVNS for stress recovery, Guided audio and breathing exercises, Heart rate and HRV analytics, Wearable device integration, Progress tracking and streaks

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

**In-app purchases:** none


## Frequently asked questions

### Is GuardBJJ free?

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

### Is SONA VNS free?

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

### Do GuardBJJ or SONA VNS have ads?

Neither GuardBJJ nor SONA VNS shows ads.

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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.*