NuCalm vs Marrowbone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NuCalm
This app offers a drug-free solution to manage stress, improve sleep, enhance focus, and boost energy. It utilizes neuroscience-backed technology to guide your brain and body into balance, promoting natural relaxation and recovery. Experience immediate stress relief and a restored nervous system.
- Drug-free sleep improvement
- Stress and anxiety relief
- Enhanced focus and productivity
- Natural energy boost
- Nervous system balance
- Clinically proven benefits
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Powered by neuroscience and made for real life. A drug-free solution for sleep, stress, focus, and energy. You do everything right, but your mind never stops. You give your best at work, show up for everyone you love, and still lie awake with thoughts that won’t quiet down. The world expects you to keep going, but NuCalm helps you finally slow down. Built on 35 years of neuroscience, NuCalm is the world’s only patented and clinically proven sleep and stress relief app that helps you relax, sleep better, focus deeply, and recharge naturally, all without drugs or supplements. Trusted by doctors, pilots, athletes, the U.S. military, and the FBI, NuCalm has helped millions experience immediate stress relief, deeper sleep, sustainable energy, and sharper focus by restoring balance to their nervous system. Feeling good, made easy. At home, at work, and everywhere in between, NuCalm meets you where stress shows up. By gently guiding your brain and body into balance, NuCalm helps you calm anxiety naturally, recover from exhaustion, and feel fully rested. Proven by science. Trusted by professionals. With over 2 billion minutes of NuCalm played worldwide, NuCalm’s neuroscience-backed relaxation technology has been relied on by healthcare professionals, high performers, and women everywhere seeking real calm, better sleep, and lasting focus. With six specialized experiences in one easy-to-use mobile app, you can choose what your body needs throughout your day: DeepSleep – fall asleep faster, sleep deeper, and wake up refreshed Rescue – lower stress and calm anxiety in minutes PowerNap – reset and recharge your energy mid-day FlowState – tap into your creative genius effortlessly Focus – sharpen concentration and boost productivity Ignite – elevate your energy naturally to get into a peak state without caffeine Whether you’re managing a household, building a business, or balancing both, NuCalm helps you show up with more clarity, patience, and confidence. It’s your daily nervous system reset, a self-care ritual that fits into real life. Clinically proven benefits include: • Reduce stress within minutes • Improve sleep quality and recovery • Lower inflammation and increase resilience • Improve metabolic health • Boost focus and creativity • Restore balance to the mind and body Start your free trial today and feel the difference after your first session. Your nervous system deserves more than survival mode. Find calm, focus, and real restoration with NuCalm, the world’s best wellness app powered by neuroscience.
Marrowbone
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A clearer picture of your dog’s everyday care. Track meals, nutrition, weight, body condition, activity and health in one thoughtfully designed place, then bring those records together to understand your dog more clearly over time. Whether you feed raw, fresh, wet, dry or a combination, Marrowbone is designed to support the way you care for your dog. MEALS & NUTRITION Log meals, treats and supplements and build a consistent picture of your dog’s feeding routine. Track different foods, quantities and feeding approaches, with support for raw, mixed and commercial diets. WEIGHT & BODY CONDITION Follow weight and body condition over time and see them alongside the feeding, activity and health records that give those changes context. ACTIVITY & HEALTH Record walks, runs, training and other activity, alongside everyday health observations and check-ins, creating a useful history of your dog’s routine and wellbeing. ONE CONNECTED RECORD Meals, weight, activity and health rarely exist in isolation. Marrowbone keeps them together, helping you look back at what has been happening and build a clearer picture of your dog throughout their life. GO FURTHER WITH MARROWBONE PLUS Marrowbone Plus turns your dog’s growing record into personalised insight, helping you understand meaningful patterns, changes and relationships across their care. With Plus you can: • Receive a personalised 30-day briefing across nutrition, weight, body condition, activity and wellbeing • Explore 7-day and 30-day Nutrition Intelligence • Discover supported patterns across food, digestion, stool quality, itching and energy with Health Insights • See how feeding, activity, weight, body condition and health connect with My Dog Over Time • Use the guided Body Condition Scanner to estimate and track Body Condition Score • Create supplement routines and scheduled reminders • Generate organised vet and nutrition reports • Share care with invited family members or caregivers • Create unlimited dog profiles BUILT FOR REAL DOG OWNERSHIP Dogs change. Routines change. Feeding changes. Marrowbone is designed to grow with them, from the next bowl to a longer-term picture of their everyday care. Start with your dog. Start with the next bowl. Marrowbone is designed to support record keeping and informed dog ownership. Body Condition Scanner results are estimates and should be considered alongside hands-on assessment. Marrowbone does not provide veterinary diagnosis or replace professional veterinary advice. Privacy Policy: https://marrowbone.app/privacy Terms of Use: https://marrowbone.app/terms
Screenshots
Verdict
The clearest difference is in-app purchases: NuCalm at none against Marrowbone's 2. Marrowbone's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, ads, device support and iOS requirement 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. Marrowbone sells 2 in-app purchases, starting at $4.99 per month. NuCalm asks for nothing beyond the download.
NuCalm ships an update every 5 weeks, Marrowbone every 2 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.
| Parameter | NuCalm | Marrowbone |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (363 ratings) — better | — |
| Positive reviews | 64.9% of reviews | — |
| Number of ratings | 363 — better | — |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 118 MB | 127 MB |
| Age rating | 9+ | 12+ |
| Developer | Solace Lifesciences, Inc | Marrowbone Technologies Ltd |
Bugs and requests
NuCalm
Reported bugs
4 issues- App crashes and freezes frequently
- Difficulty logging in and accessing accounts
- Tracks failing to download or play properly
- Subscription and billing issues
Requested features
4 requests- More customization options for audio tracks
- Offline mode for downloading tracks
- Improved app stability and user experience
- Better customer support and communication
Marrowbone
Not enough reviews yet to summarise bugs or requests.
In-app purchases
NuCalm
No in-app purchases
Marrowbone
- Marrowbone Plus Monthly$4.991 Month
- Marrowbone Plus Annual7 Days trial$49.991 Year









