# Nerva vs Buff Muff

The clearest difference is rating: Nerva at 4.7 against Buff Muff's 3.6. Nerva also leads on ratings volume (15K vs 166) and update cadence (weekly vs every 5 weeks). 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 Buff Muff sells 9 in-app purchases, starting at $15.00 per month. Whichever you choose, the download price is not the number that matters.

Nerva holds the better App Store score, 4.7 against 3.6. That said, the two scores are not equally well evidenced: Nerva has 15K ratings behind it against 166, 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 56% of Buff Muff's.

Nerva ships an update weekly, Buff Muff every 5 weeks. The most recent releases landed on September 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Nerva | Buff Muff |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (15K ratings)](https://appshunter.io/ios/app/nerva-gut-brain-program/id1467398796/reviews)** | [3.6 (166 ratings)](https://appshunter.io/ios/app/buff-muff/id1594400611/reviews) |
| Number of ratings | **15K** | 166 |
| Positive reviews | **72.5% of reviews** | 56.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 134 MB | 65 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 17+ |
| Developer | [Mindset Health Pty Ltd](https://appshunter.io/developer/1255073245) | [Pelvienne Wellness Inc](https://appshunter.io/developer/1594400613) |

## What reviewers say

### Nerva

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

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


### Buff Muff

[App page](https://appshunter.io/ios/app/buff-muff/id1594400611)

This app offers expert-backed routines for pelvic floor fitness, targeting muscles often missed by Kegels. It helps relieve incontinence, urgency, and prolapse symptoms while rebuilding strength and confidence. Access daily workouts, educational videos, challenges, meal plans, and expert interviews.

**Highlights:** Daily pelvic floor workouts, Educational videos on women's health, 28-day pelvic floor challenges, Holistic meal plans, Interviews with pelvic health experts, Apple Watch integration for workout tracking

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Workouts | $15.00 | per month |
| Subscription | $26.99 | per month |
| Subscription | $26.99 | per month |
| Yearly Membership | $119.00 | per year |
| Annual | $196.99 | per year |
| Onetime Subscription | $17.00 | one-time |
| Buff Muff Challenge Only | $26.99 | one-time |
| Birth Like A Boss Only | $26.99 | one-time |
| BuffMuffChallenge | $27.99 | one-time |

**What reviewers like**

- 🌟 Excellent program with immediate results
- 👍 Easy to follow exercises that are quick
- 💪 Helps strengthen the pelvic floor
- 🤗 Friendly and engaging instructor
- 🧠 Provides helpful information and education

**What reviewers complain about**

- 🐛 App is glitchy and freezes/crashes
- 🔒 Difficult to cancel subscription
- 💰 Expensive subscription model
- 🤔 Misleading advertising about content
- 📚 Limited free content, most is locked behind paywall

**Reported bugs**

- Videos not loading or freezing
- Login issues and inability to access account
- Incorrect billing and subscription management

**Requested features**

- Ability to easily cancel subscription
- Offline access to content
- More free educational resources
- Improved app stability and performance
- Light mode option for better readability


## Frequently asked questions

### Is Nerva free?

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

### Is Buff Muff free?

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

### Which has better reviews, Nerva or Buff Muff?

Nerva is rated higher. Nerva averages 4.7 out of 5 from 15K ratings, while Buff Muff averages 3.6 from 166 ratings.

### Do Nerva or Buff Muff have ads?

Neither Nerva nor Buff Muff shows ads.

### Which is updated more often, Nerva or Buff Muff?

Nerva ships an update weekly, and Buff Muff every 5 weeks. Most recently, Nerva was updated on September 24, 2026 and Buff Muff on September 18, 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.*