Nerva vs Buff Muff
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nerva
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.
- 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
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Fix the miscommunication between your gut and brain. Designed for people living with IBS, functional dyspepsia (FD), GERD, bloating symptoms, and other gut–brain disorders - as well as those seeking additional support alongside IBD care - Nerva is a personalized gut–brain program that supports symptom management through daily sessions, practical tools, and structured guidance. Target the root cause Many people spend years cutting out foods in an effort to calm their gut - a difficult path that can miss what’s really driving symptoms. In disorders of gut–brain interaction (DGBIs), the root cause is gut–brain hypersensitivity. After a trigger like illness, antibiotics, or prolonged stress, the nerves in the gut can become over-reactive. Even once the gut tissue heals, the nervous system may keep the alarm turned up. Normal digestion, gas, or movement are then misread as danger - leading to pain, bloating, reflux, urgency, constipation, or diarrhea. Diets and medications can reduce symptoms temporarily, but they don’t retrain this signaling system. That’s why symptoms often return or shift over time. Lasting relief means calming the nervous system and restoring healthy gut–brain communication - where the symptoms actually start. How Nerva helps Nerva is a structured gut–brain program that helps you practice brain-gut techniques shown to support a calmer response to gut sensations. Over the program you'll learn to: - Respond differently to uncomfortable gut signals - Practice calming the gut–brain stress response - Build daily habits that support digestive comfort Tailored to you No two guts are the same. Nerva adapts your program to your symptoms, triggers, and progress - using AI to adjust the coaching and guidance as you go. The sessions, the tools you receive, and the coaching you follow are all shaped around your experience. Evidence-based Unlike most apps, Nerva is built on clinical research. In a randomized controlled trial at Monash University, Nerva helped 81% of people significantly manage their gastrointestinal symptoms. Since then, more than 300,000 people have used Nerva, and over 11,000 healthcare providers recommend it. Features of Nerva - Daily 15-minute sessions designed to retrain gut-brain miscommunication - Flare-up tools for pain, bloating, constipation, reflux and diarrhea - Long-term maintenance plan to keep symptoms under control after the program - AI personalization to tailor the program to your selected triggers and progress Who is the team behind Nerva? Nerva was built by Dr. Simone Peters, GI psychophysiologist, together with clinicians, dietitians, and researchers. Many of us live with gut conditions ourselves. Member stories “Nerva has really worked for me. I’ve been using the app for several months now, and I’ve noticed that I’m experiencing less negative instances with my stomach. I would highly recommend to anyone - absolutely worth the subscription” Disclaimer: Nerva is a self-guided program that may help people self-manage and live well with a diagnosed disorder of the gut-brain interaction. It is not a substitute for professional medical care, diagnosis, or treatment, and has not been evaluated by the FDA, TGA, MHRA, or equivalent bodies. Do not change prescribed medication or treatment without professional advice. Some content is personalized or generated by AI for educational and wellness purposes only. It is not therapy or mental health care, is not from a licensed professional, and is not monitored in real time. If you are in distress or thinking of harming yourself or others, call your local emergency number right away. Subscription and trial 7-day free trial After the trial, your account is charged according to the plan you choose Subscriptions renew until cancelled Cancel anytime in iOS Settings, Apple ID, Subscriptions Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.mindsethealth.com/privacy
Buff Muff
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.
- 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
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The Buff Muff Method: When Kegels Failed, 6,000+ Women Turned to This Expert-Backed Routine to Finally Feel Like Themselves Again Recommended by pelvic floor specialists, these 10-minute routines target the muscles Kegels often miss — helping relieve stress incontinence, urgency, and prolapse, while rebuilding strength and restoring confidence. ► BECAUSE EVERY VAGINA NEEDS A COACH! “Every Vagina Needs A Coach” and now you can have your own coach, Kim Vopni, right in your pocket! This is the all-in-one app for your pelvic floor. Everything you need to master your pelvic health. The Buff Muff Method has helped thousands of women learn how to do pelvic floor exercises correctly and most effectively. Ditch the incontinence pads, eliminate your prolapse symptoms and get back to living life to the fullest! The full membership includes; ► DAILY WORKOUTS Complete the daily pelvic health workouts with professionally selected pelvic floor exercises for women. All the workouts help you strengthen and optimize your pelvic floor, eliminate symptoms and regain your confidence. Whether you want to workout along with me or pick the exercises of your choice, it’s all yours. See progress every day! ► EDUCATIONAL VIDEOS AND EXERCISES Unlike most kegel trainers & pelvic health workout apps, Buff Muff dives deeper in women’s health issues. Here you can also watch educational videos and exercises designed to help you relieve chronic pain, stop incontinence, overcome constipation, recover from prolapse, and more! ►BUFF MUFF CHALLENGES Do you have a hard time practicing pelvic floor health exercises? Then join the 28-day Buff Muff challenge to train and strengthen your pelvic floor with a whole body approach. This challenge helps you stay focused and motivated to combat bothersome pelvic floor symptoms. ►MEAL PLANS Compared to most pelvic floor fitness apps, Buff Muff also gives you detailed meal plans to help you journey towards holistic women’s health. ►GUEST EXPERTS Want to dive deeper into pelvic health issues? Watch the exclusive interviews from world-class experts on pelvic health. ►COMMUNITY We are also here to coach, motivate and support you in every step of your journey! — Buff Muff includes Apple Watch - You can track your workouts and meet your fitness goals. - Monitor Stats during Workouts: View heart rate/calories burned on your watch & video player. - HEALTH App: Apple Watch integrates with Apple's Health app (Healthkit) to track workouts, duration, calories burned, heart rate, and active energy. You choose the data you want stored, and you can change it anytime in the Health app. - FITNESS App: Apple Watch integrates with Apple's Fitness App, and workouts contribute to your daily goals. View stats, share your activity, and get those Activity Rings! - Use your Watch as a Remote: Play, stop, & rewind videos without interrupting workouts. - Install using iPhone: Install app on iPhone, open Watch app, select "Show on Apple Watch". —— ▷ Already a Member? Sign-In to access your subscription. ▷ New? Subscribe in the app to get instant access. Buff Muff offers auto-renewing subscriptions. You'll receive unlimited access to content on all your devices. Payment is charged to your account at confirmation of purchase. Pricing varies by location and is confirmed prior to purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current billing period, or the trial period (when offered). Cancel anytime in Account Settings. For more information see our: -Terms of Service: https://app.buffmuff.com/terms -Privacy Policy: https://app.buffmuff.com/privacy
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Nerva | Buff Muff |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (15K ratings) — better | 3.6 (166 ratings) |
| Positive reviews | 72.5% of reviews — better | 56.3% of reviews |
| Number of ratings | 15K — better | 166 |
| Update frequency | Weekly — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #189 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 134 MB | 65 MB |
| Age rating | 12+ | 17+ |
| Developer | Mindset Health Pty Ltd | Pelvienne Wellness Inc |
Customer experience
Nerva
Buff Muff
User reviews
Nerva
From 15K App Store ratingsWhat we love
- 🚀 Effective for symptom reduction
- 👍 Calming and relaxing sessions
- 💡 Helpful for managing stress and anxiety
- 👍 Positive affirmations and education
- 🚀 Quick improvements seen by some users
Room to improve
- 🔁 Repetitive nature of sessions
- 💰 Expensive subscription cost
- 🔍 Lack of customization options
- 🐛 Technical issues with app functionality
Buff Muff
From 166 App Store ratingsWhat we love
- 🌟 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
Room to improve
- 🐛 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
Bugs and requests
Nerva
Reported bugs
3 issues- App getting stuck on certain days
- Difficulty accessing previous sessions
- Inconsistent user experience across devices
Requested features
4 requests- More variety in guided visualizations
- Ability to skip or replace certain sessions
- Maintenance plan with reduced pricing
- Offline access to recordings
Buff Muff
Reported bugs
3 issues- Videos not loading or freezing
- Login issues and inability to access account
- Incorrect billing and subscription management
Requested features
5 requests- Ability to easily cancel subscription
- Offline access to content
- More free educational resources
- Improved app stability and performance
- Light mode option for better readability
In-app purchases
Nerva
- Nerva IBS program (Monthly)7 Days trial$43.991 Month
- 30% Off Nerva IBS (3 Month)7 Days trial$60.993 Months
- Nerva IBS program (3 Month)7 Days trial$78.993 Months
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- Nerva Full Access7 Days trial$199.001 Year
Buff Muff
- Workouts$15.001 Month
- Subscription$26.991 Month
- Subscription14 Days trial$26.991 Month
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- Yearly Membership7 Days trial$119.001 Year
- Annual7 Days trial$196.991 Year
- Onetime Subscription$17.00
- Buff Muff Challenge Only$26.99
- Birth Like A Boss Only$26.99
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- BuffMuffChallenge$27.99









