# Syntropy vs SONA VNS

The clearest difference is review sentiment: Syntropy at 95% against SONA VNS's 0%. Syntropy also leads on rating (3.7 vs 2.0) and ratings volume (3 vs 1). SONA VNS's advantage is in-app purchases (none vs 4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Syntropy sells 4 in-app purchases, starting at $2.99 per month. SONA VNS asks for nothing beyond the download.

Syntropy holds the better App Store score, 3.7 against 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 95% of Syntropy's written reviews are positive against 0% of SONA VNS's.

Syntropy ships an update every 2 weeks, SONA VNS fortnightly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Syntropy | SONA VNS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/syntropy/id1583227152/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/sona-vns/id6756424780/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **95.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 76 MB | 120 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [The Syntropy Partnership Ltd](https://appshunter.io/developer/1583227154) | [Mindspire Limited](https://appshunter.io/developer/1586140980) |

## What reviewers say

### Syntropy

[App page](https://appshunter.io/ios/app/syntropy/id1583227152)

Experience a unique approach to wellbeing with immersive video art and calming music designed for relaxation and stress relief. Explore curated galleries for breathwork, meditation, and mood enhancement. Enjoy offline access and discover featured artists.

**Highlights:** Immersive video art and music, Relaxation and de-stressing journeys, Breathwork cycles (8, 10, 12 sec), Guided meditation and focused attention, Mood elevation visuals, Offline video playback, Artist profiles and interviews

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Monthly Subscription | $3.49 | per month |
| Annual Subscription | $30.99 | per year |
| Annual Subscription | $33.99 | per year |


### 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 Syntropy free?

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

### Is SONA VNS free?

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

### Which has better reviews, Syntropy or SONA VNS?

Syntropy is rated higher. Syntropy averages 3.7 out of 5 from 3 ratings, while SONA VNS averages 2.0 from 1 ratings.

### Do Syntropy or SONA VNS have ads?

Neither Syntropy nor SONA VNS shows ads.

### Which is updated more often, Syntropy or SONA VNS?

Syntropy ships an update every 2 weeks, and SONA VNS fortnightly. Most recently, Syntropy was updated on November 3, 2026 and SONA VNS on October 30, 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.*