# Nerva vs Back Rx

The clearest difference is update cadence: Nerva at weekly against Back Rx's every 2 months. Nerva also leads on ratings volume (15K vs 1) and chart position (#198 vs unranked). Back Rx's advantage is review sentiment (100% vs 73%) and rating (5.0 vs 4.7). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Nerva sells 4 in-app purchases, starting at $43.99 per month and Back Rx sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Back Rx holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Nerva has 15K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 73% of Nerva's written reviews are positive against 100% of Back Rx's.

Nerva ships an update weekly, Back Rx every 2 months. The most recent releases landed on September 26, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Nerva | Back Rx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (15K ratings)](https://appshunter.io/ios/app/nerva-gut-brain-program/id1467398796/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/back-rx/id1484288564/reviews)** |
| Number of ratings | **15K** | 1 |
| Positive reviews | 72.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | **#198** | — |
| Size | 134 MB | 72 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Mindset Health Pty Ltd](https://appshunter.io/developer/1255073245) | [Heal Factory LLC](https://appshunter.io/developer/1484288563) |

## What reviewers say

### Nerva

[App page](https://appshunter.io/ios/app/nerva-gut-brain-program/id1467398796)

**Currently charting:** #198 Top Grossing · Health & Fitness (US App Store)

This app offers a personalized gut-brain therapy program to manage symptoms of IBS, FD, GERD, and other gut-brain disorders. It aims to retrain the nervous system and improve communication between the gut and brain through daily sessions and practical tools.

**Highlights:** Personalized gut-brain therapy program, Daily 15-minute retraining sessions, Flare-up management tools, Long-term symptom maintenance plan, AI-driven personalization, Evidence-based clinical research

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nerva IBS program (Monthly) | $43.99 | per month |
| 30% Off Nerva IBS (3 Month) | $60.99 | per 3 months |
| Nerva IBS program (3 Month) | $78.99 | per 3 months |
| Nerva Full Access | $199.00 | per year |

**What reviewers like**

- 🚀 Effective for symptom reduction
- 👍 Calming and relaxing sessions
- 💡 Helpful for managing stress and anxiety
- 👍 Positive affirmations and education
- 🚀 Quick improvements seen by some users

**What reviewers complain about**

- 🔁 Repetitive nature of sessions
- 💰 Expensive subscription cost
- 🔍 Lack of customization options
- 🐛 Technical issues with app functionality

**Reported bugs**

- App getting stuck on certain days
- Difficulty accessing previous sessions
- Inconsistent user experience across devices

**Requested features**

- More variety in guided visualizations
- Ability to skip or replace certain sessions
- Maintenance plan with reduced pricing
- Offline access to recordings


### Back Rx

[App page](https://appshunter.io/ios/app/back-rx/id1484288564)

This app offers a clinically proven program for back pain relief, combining guided physiotherapy routines with emotional support. It helps users improve mobility, reduce pain, and understand their condition through educational insights and a peer community.

**Highlights:** Guided video physiotherapy routines, Progress tracking (pain, movement, wellbeing), Educational insights on back health, Supportive peer community, Mind-body approach to healing

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $6.99 | per month |
| Semi-annual subscription | $34.99 | per 6 months |
| Annual subscription | $59.99 | per year |


## Frequently asked questions

### Is Nerva free?

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

### Is Back Rx free?

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

### Which has better reviews, Nerva or Back Rx?

Back Rx is rated higher. Nerva averages 4.7 out of 5 from 15K ratings, while Back Rx averages 5.0 from 1 ratings.

### Do Nerva or Back Rx have ads?

Neither Nerva nor Back Rx shows ads.

### Which is updated more often, Nerva or Back Rx?

Nerva ships an update weekly, and Back Rx every 2 months. Most recently, Nerva was updated on September 26, 2026 and Back Rx on June 1, 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.*