Comparison

Nerva vs NOCAF

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

Head to head
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

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

About

NOCAF

This app guides users on a 90-day journey to break free from caffeine. It offers brain rewiring tracking, milestone achievements, daily challenges, guided meditations, and an educational library to support a caffeine-free lifestyle.

Highlights
  • 90-day brain rewiring journey
  • Milestone and achievement tracking
  • 28-day healthy habit challenges
  • Guided meditation and breathing exercises
  • Comprehensive education library
  • Streak tracking with edit capabilities
  • Money saved calculator
Features
Read full description

Ready to break free from caffeine? NOCAF is your personal companion on the journey to a caffeine-free lifestyle. Brain Rewiring Tracker • Follow your 90-day journey to rewire your brain • Watch your progress with visualizations • Celebrate milestones along the way • Get real-time streak tracking with detailed time displays Milestone System • Comprehensive achievement tracking for daily, weekly, and monthly progress • Share your achievements directly to social media • Invite friends with personalized referral links • Multiple categories including coffee-specific, energy drink, financial, and general milestones • Popups when you unlock new achievements 28-Day Challenge • Complete daily tasks to build healthy habits • Visual progress tracking with day-by-day completion • Reset and restart functionality for relapses • Achievement tracking to stay motivated • Build a sustainable caffeine-free routine Guided Meditation and Recovery • Interactive breathing exercises with animated meditation sessions • Use meditation when caffeine cravings hit • Track withdrawal symptoms and recovery benefits • Access educational content with recovery strategies Comprehensive Education Library • Expert articles on caffeine addiction • Mindfulness, meditation, and coping techniques • Learn about improved sleep, reduced anxiety, and stable energy • Easy-to-navigate content sections Key Features • Smart streak tracking with edit capabilities • Track and monitor withdrawal symptoms • Instant recognition for daily wins • Money saved calculator (average $6/day saved) • Make and track personal commitments • Reset functionality with guidance for relapses • Context-sensitive tutorials and tips Personalized Onboarding • Tailored setup through a comprehensive questionnaire • Identify caffeine-related mental and physical symptoms • Personalized experience based on your goals • Seamless data backup across devices with Firebase Social and Community Features • Post milestones to social media with one tap • Invite friends with trackable referral codes • Share your journey statistics • Help others start their caffeine-free journey Why Quit Caffeine? • Better sleep quality • Reduced anxiety • Stable energy levels • Improved digestion • Lower blood pressure • Natural stress management • Better hydration • Financial savings Privacy and Security • Secure cloud backup • Offline functionality • Your data stays private • Google and Apple Sign-In support Start your journey to natural energy and better health today. Download NoCaf and take the first step towards a caffeine-free life. Your path to freedom from caffeine starts here. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Nerva4 screens
NOCAF4 screens

Verdict

The call

The clearest difference is rating: Nerva at 4.7 against NOCAF's 3.9. Nerva also leads on ratings volume (15K vs 7) and chart position (#189 vs unranked). NOCAF's advantage is iOS requirement (12.0 vs 15.0). On price, review sentiment, update cadence and ads 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 $43.99 per month and NOCAF sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Nerva holds the better App Store score, 4.7 against 3.9. 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: 73% of Nerva's written reviews are positive against 71% of NOCAF's.

UpkeepUpdate frequency

Nerva ships an update weekly, NOCAF every 9 days. The most recent releases landed on September 24, 2026 and September 14, 2026 respectively.

Scorecard4 real differences · 7 level
Nerva versus NOCAF: the parameters behind the verdict, then further details
ParameterNervaNOCAF
PriceFreeFree
Rating4.7 (15K ratings) — better3.9 (7 ratings)
Positive reviews72.5% of reviews — better71.4% of reviews
Number of ratings15K — better7
Update frequencyWeekly — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#189 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size134 MB77 MB
Age rating12+4+
DeveloperMindset Health Pty LtdRachit Agarwal

Customer experience

Nerva

All ratings14,789 ratings
Positive93.1%
Neutral3.2%
Negative3.7%
Written reviews867 reviews
Positive72.5%
Neutral6.0%
Negative21.5%

NOCAF

All ratings7 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews7 reviews
Positive71.4%
Neutral0.0%
Negative28.6%

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

NOCAF

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Nerva

Subscriptions4
  • 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
Show 1 more
  • Nerva Full Access7 Days trial$199.001 Year
3 purchases

NOCAF

Subscriptions3
  • Weekly$1.997 Days
  • Monthly$3.991 Month
  • Unlimited (1 Year)$59.991 Year

Questions

Is Nerva free?
Nerva is free to download, with in-app purchases available.
Is NOCAF free?
NOCAF is free to download, with in-app purchases available.
Which has better reviews, Nerva or NOCAF?
Nerva is rated higher. Nerva averages 4.7 out of 5 from 15K ratings, while NOCAF averages 3.9 from 7 ratings.
Do Nerva or NOCAF have ads?
Neither Nerva nor NOCAF shows ads.
Which is updated more often, Nerva or NOCAF?
Nerva ships an update weekly, and NOCAF every 9 days. Most recently, Nerva was updated on September 24, 2026 and NOCAF on September 14, 2026.

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