# Nerva vs retimer

The clearest difference is review sentiment: Nerva at 72% against retimer's 0%. Nerva also leads on rating (4.7 vs 2.0) and ratings volume (15K vs 1). retimer's advantage is in-app purchases (none vs 4) and iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Nerva sells 4 in-app purchases, starting at $99.00 per month. retimer asks for nothing beyond the download.

Nerva holds the better App Store score, 4.7 against 2.0. 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: 72% of Nerva's written reviews are positive against 0% of retimer's.

Nerva ships an update every 2 weeks, retimer every 3 weeks. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Nerva | retimer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15K ratings)](https://appshunter.io/ios/app/nerva-gut-brain-program/id1467398796/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/retimer/id6475566801/reviews) |
| Number of ratings | **15K** | 1 |
| Positive reviews | **72.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#195** | — |
| Size | 138 MB | 108 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Mindset Health Pty Ltd](https://appshunter.io/developer/1255073245) | [Re-Time Pty Ltd](https://appshunter.io/developer/637379603) |

## What reviewers say

### Nerva

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

**Currently charting:** #195 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) | $99.00 | per month |
| Nerva IBS program (3 Month) | $149.00 | per 3 months |
| 30% Off Nerva IBS (3 Month) | $149.00 | 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


### retimer

[App page](https://appshunter.io/ios/app/retimer/id6475566801)

This app helps manage and monitor your circadian rhythm to improve sleep and energy levels. It works with a light therapy wearable to address issues like jet lag, irregular work hours, and general sleep difficulties.

**Highlights:** Circadian rhythm management, Sleep monitoring, Energy level improvement, Jet lag adjustment, Light therapy integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nerva free?

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

### Is retimer free?

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

### Which has better reviews, Nerva or retimer?

Nerva is rated higher. Nerva averages 4.7 out of 5 from 15K ratings, while retimer averages 2.0 from 1 ratings.

### Do Nerva or retimer have ads?

Neither Nerva nor retimer shows ads.

### Which is updated more often, Nerva or retimer?

Nerva ships an update every 2 weeks, and retimer every 3 weeks. Most recently, Nerva was updated on October 13, 2026 and retimer 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.*