Comparison

Happy Gut vs Nerva

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Happy Gut

This app offers a comprehensive 28-day program to heal gut-related health issues, aiming to improve energy, reduce pain, and support weight loss. It provides tools for tracking progress, personalized goals, and daily meal plans.

Highlights
  • Gut healing program
  • Track weight, nutrition, sleep, symptoms, exercise
  • Sync with fitness trackers
  • Daily meal plans and recipes
  • Supplement recommendations
  • Educational videos
Features
Read full description

HAPPY GUT®: THE BREAKTHROUGH APP TO HELP YOU HEAL YOUR GUT-RELATED HEALTH ISSUES TO LOSE WEIGHT, GAIN ENERGY, AND ELIMINATE PAIN (And Get Happy, too!) Are you suffering from debilitating fatigue, migraines, allergies, constipation or IBS symptoms? Maybe you can’t lose those extra stubborn pounds? Or wonder where your mental clarity? Do you want relief from your chronic unexplained itching, muscle aches, and abdominal pain? If your gut is unhappy, it can cause a whole host of medical issues, because the gut is the foundation for all healing. Fortunately, Vincent Pedre M.D., author of HAPPY GUT® and leading Integrative & Functional medical doctor, is here his groundbreaking Happy Gut® Cleanse, founded on the principles of his Gut C.A.R.E.® Program, a 360° approach to healing your gut. THE HAPPY GUT® APP is a powerful Gut Reboot tool! As a mobile health and wellness app it is the perfect companion to Dr. Pedre’s book, “HAPPY GUT – THE CLEANSING PROGRAM TO HELP YOU LOSE WEIGHT, GAIN ENERGY, AND ELIMINATE PAIN.” Use the HAPPY GUT® APP to enhance Dr. Pedre’s comprehensive 28-day total cleansing, nutrition, and wellness program - your first step in a life-changing journey towards optimal health. This easy to follow protocol for gut cleansing, body healing, healthy eating, movement, and meditation practice is intended to bring you relief from symptoms and set the stage for your deeper healing. Use the HAPPY GUT® APP to track and inspire your success towards a healthy, happy gut! START YOUR JOURNEY WITH THE HAPPY GUT® APP, AND CONTINUE YOUR JOURNEY WITH A DEEPER DIVE INTO “HAPPY GUT” - THE BOOK. The book, “HAPPY GUT,” (available through Amazon and Barnes & Noble) will give you more detailed information to help you determine if you are suffering from LEAKY GUT SYNDROME, YEAST OVERGROWTH or from one of the other myriad of conditions labeled under the umbrella of IRRITABLE BOWEL SYNDROME. Find out which symptom-based tests you can ask your health practitioner to run in order to determine the root cause of your symptoms, so that you can get back to feeling your absolute best! WITH THE HAPPY GUT® APP IN HAND, YOU HAVE EVERYTHING YOU NEED TO BEGIN FEELING BETTER TODAY! -Easy, intuitive App makes it simple to follow and log your progress -Set goals and personalize your profile -Track Weight, Nutrition, Sleep, Symptoms, Exercise, Meditation and More -Automatically sync with your fitness trackers and apps including the Apple Health App & Fitbit -Automated Reminders to help keep you on track -Inspirational push notifications to keep you motivated -Detailed Daily Meal Plans -Delicious, Healthy Recipes to keep you inspired -Supplement Recommendations -Shopping Guide with What to Eat / What Not to Eat -Educational Videos by Dr. Pedre -Printable PDFs HAPPY GUT® and GUT C.A.R.E.® are registered trademarks of Wellness Media, LLC. DISCLAIMER Medical Disclaimer: The Happy Gut® App by Imbodi, Inc. is not a medical device. The information in The Happy Gut® App is provided for informational purposes only and is not intended to diagnose, cure or prevent any disease. It is also not intended to replace a consultation with a qualified health care professional. It is not intended as medical advice and DOES NOT create a doctor-patient relationship between you and Dr. Pedre. This is not a prescriptive treatment. If you have concerns about your individual health or management of your symptoms, please consult your physician or qualified health practitioner. In addition, please consult your healthcare professional before stopping or taking any medication or nutritional, herbal or homeopathic supplement, or beginning any treatment for any health problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease.

About

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.

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
Read full description

Address 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

Screenshots

Happy Gut4 screens
Nerva4 screens

Verdict

The call

The clearest difference is review sentiment: Nerva at 72% against Happy Gut's 20%. Nerva also leads on rating (4.7 vs 2.4) and update cadence (every 8 days vs every 49 months). Happy Gut's advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 15.1). On price, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Nerva holds the better App Store score, 4.7 against 2.4. That said, the two scores are not equally well evidenced: Nerva has 15K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 20% of Happy Gut's written reviews are positive against 72% of Nerva's.

UpkeepUpdate frequency

Happy Gut ships an update every 49 months, Nerva every 8 days. Both last shipped on October 21, 2026.

Scorecard8 real differences · 3 level
Happy Gut versus Nerva: the parameters behind the verdict, then further details
ParameterHappy GutNerva
PriceFreeFree
Rating2.4 (7 ratings)4.7 (15K ratings) — better
Positive reviews20.0% of reviews72.4% of reviews — better
Number of ratings715K — better
Update frequencyEvery 49 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#146 — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.0 — better15.1
Further details — not scored
Size56 MB138 MB
Age rating17+12+
DeveloperImbodi, IncMindset Health Pty Ltd

Customer experience

Happy Gut

All ratings7 ratings
Positive28.6%
Neutral0.0%
Negative71.4%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

Nerva

All ratings15,042 ratings
Positive93.1%
Neutral3.2%
Negative3.7%
Written reviews880 reviews
Positive72.4%
Neutral5.9%
Negative21.7%

Bugs and requests

Happy Gut

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Happy Gut

No in-app purchases

4 purchases

Nerva

Subscriptions4
  • Nerva IBS program (Monthly)7 Days trial$99.001 Month
  • Nerva IBS program (3 Month)7 Days trial$149.003 Months
  • 30% Off Nerva IBS (3 Month)7 Days trial$149.003 Months
Show 1 more
  • Nerva Full Access7 Days trial$199.001 Year

Questions

Is Happy Gut free?
Happy Gut is free to download, with no in-app purchases.
Is Nerva free?
Nerva is free to download, with in-app purchases available.
Which has better reviews, Happy Gut or Nerva?
Nerva is rated higher. Happy Gut averages 2.4 out of 5 from 7 ratings, while Nerva averages 4.7 from 15K ratings.
Do Happy Gut or Nerva have ads?
Neither Happy Gut nor Nerva shows ads.
Which is updated more often, Happy Gut or Nerva?
Happy Gut ships an update every 49 months, and Nerva every 8 days. Most recently, Happy Gut was updated on October 21, 2026 and Nerva on October 21, 2026.

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