Comparison

ReViiV vs Sleepwizard

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

Head to head
About

ReViiV

This app offers customized daily breathing exercises designed to alleviate post-viral symptoms like fatigue, brain fog, and loss of taste/smell. It utilizes scientifically backed techniques across 16 progressive stages to promote steady improvement and symptom relief.

Highlights
  • Customized daily breathing exercises
  • 16 progressive stages for improvement
  • Relief from fatigue, brain fog, taste/smell loss
  • 8 scientifically backed techniques
  • Weekly progress assessments and graphs
  • Detailed guides and technique resources
Features
Read full description

** Rapid Long-Haul Relief ** Experience fast relief from your Long-Haul / Post-Viral symptoms with ReViiV, a breakthrough app offering customized daily exercises designed to treat common Long-Haul symptoms. Imagine less fatigue, clearer thinking, and the return of taste/smell, often starting within 24 hours – all possible through our custom breathing program. Featuring 8 scientifically backed techniques fused into simple, daily exercises, this is more than deep breaths; it's about continuous improvement and reclaiming your health. (View the Full Medical Paper: https://tinyurl.com/mukdb2cc) ** Steady Improvement over 16 Stages ** ReViiV is designed to quickly relieve many common Long-Haul (PASC) symptoms, including Fatigue, Taste/Smell loss, Breathlessness, “Brain Fog’, Muscle/Joint pain, Insomnia, and more. ReViiV uses 5-minute daily breathing exercises, progressively tailored to your needs, to both relieve symptoms and facilitate steady, incremental improvement over 16 stages. Weekly assessments and graphs show your progress along with visual aids, detailed guides, and resources to ensure proper technique. ** Featuring 8 Scientifically Backed Techniques ** Drawing from the latest Long-Haul (PASC) research, as well as respiratory and cognitive-behavioral therapy, ReViiV's effectiveness stems from 8 scientifically backed techniques fused into a highly effective breathing program: 1. Nasal Breathing: ReViiV promotes nasal breathing 24/7 to increase the efficiency of your lungs, improve oxygen intake, reduce fatigue, and help restore taste & smell. 2. Prolonged Exhalation: By emphasizing long exhales, ReViiV aims to reduce breathlessness, relax your body, improve your sleep, and improve lung function. 3. Diaphragm Activation: ReViiV encourages deep 'belly breathing' to improve your lung function, reduce fatigue and shortness of breath. By stimulating the nervous system, it also reduces stress and anxiety, enhancing well-being. 4. Oxygen/CO2 Regulation: ReViiV aims to improve your lung capacity and balance the levels of oxygen and CO2 in your body by fostering the Bohr Effect, helping to alleviate symptoms like fatigue, breathlessness, and ‘brain fog’. 5. Regulated Immune System: ReViiV's breathing exercises are designed to keep your immune system in check, reducing inflammation and other immune-related symptoms often seen in Long-Haulers. 6. Olfactory Re-training: ReViiV incorporates specific exercises that can enhance your sensitivity to smell and taste, especially useful for Long-Haulers. 7. Breath-Holding: When you're ready, ReViiV introduces daily breath-holding exercises to help your body adapt to higher CO2 levels, improving overall body efficiency. 8. Stress Reduction and Mindfulness: ReViiV includes mindfulness techniques to help reduce fatigue, improve sleep, and combat stress, anxiety, and depression. ** Key Features & Functionality ** • Safe, 100% natural Long-Haul breathing therapy, requiring just minutes a day. • Harness 8 potent techniques for rapid Long-Haul symptom relief and ongoing improvement. • Benefits often noticeable within 24 hours. • Weekly assessments and graphs to measure and track your progress. • Progressive 16-stage guided program with three intensity levels. • Auto-adjusts exercise intensity based on your progress. • Co-created by a Long-Hauler along with leading post-viral research and trials. • Multiple breath counters and countdown timers within a user-friendly interface. • Access to additional Long-Haul resources, guides and tips to ensure you're on the right track. • Daily exercises tailored for morning focus, afternoon energy, and evening relaxation. Download ReViiV FREE Now! ** For More Information ** - How ReViiV Works: https://reviiv.me/howitworks - Full Medical Paper: https://tinyurl.com/mukdb2cc Terms of use: https://www.Apple.com/legal/internet-services/itunes/dev/stdeula/

About

Sleepwizard

This app uses AI to analyze your sleep patterns by combining Apple Watch biometrics with your daily context. It provides personalized insights into why your sleep quality fluctuates and offers actionable advice to improve it.

Highlights
  • AI-driven sleep pattern analysis
  • Integrates Apple Watch biometrics
  • Contextual logging (caffeine, stress, etc.)
  • Personalized sleep debt tracking
  • Smart bedtime recommendations
  • Detailed sleep trends and vitals
Features
Read full description

SleepWizard — Your AI Sleep Coach Sleep trackers tell you what happened. SleepWizard tells you why. Most apps show you data: "You slept 6 hours." But they can't tell you why your deep sleep tanked or what to do about it. SleepWizard is different. It combines your Apple Watch biometrics with the context only you can provide — caffeine, alcohol, stress, screens, exercise — and uses AI to find patterns over weeks that you'd never spot yourself. The result? Insights like: "Your deep sleep drops 40% on nights you log alcohol after 7pm. This has happened 7 of the last 8 times." That's not generic advice. That's YOUR data telling YOUR story. WHAT MAKES SLEEPWIZARD DIFFERENT Data Fusion — Apple Watch captures sleep stages, HRV, heart rate, SpO2. You log the context: caffeine, alcohol, stress, screens, exercise. Somni (your AI coach) connects them over time. AI Coach That Actually Knows You — Somni analyzes 7 nights of detailed metrics, 30-day averages, and 7 days of contextual factors. Over 200 data points inform every response. Sleep Debt Tracking — 14-night rolling ledger shows exactly what you owe. Choose gradual (+15 min/night), moderate (+30 min), or aggressive (+45 min) payback plans. Smart Scheduling — Optimal bedtime recommendations based on your debt, chronotype, and goals. Quick Check-Ins — Evening: log substances, stress, screens, exercise in seconds. Morning: rate your mood and energy. Takes 30 seconds. Trends & Vitals — Track duration, efficiency, quality score, sleep stages, HR, HRV, respiratory rate, and SpO2 over 7/30/90 days. MEET SOMNI Somni is your AI sleep coach. Not a chatbot with a sleep FAQ — a coach that correlates your biometrics with your behaviors to find YOUR patterns and give YOU specific advice. Ask anything: "Why did I sleep badly last night?" "What's hurting my deep sleep?" "How do I pay back my sleep debt?" Somni uses your own API key from Anthropic (Claude) or OpenAI (ChatGPT). You choose your provider, you control your data. REQUIREMENTS iPhone with iOS 17+ Apple Watch with watchOS 10+ (for sleep tracking) Optional: Your own Claude or ChatGPT API key for AI coaching PRIVACY FIRST All sleep data stays on your device No account required No cloud uploads AI conversations go directly to your chosen provider — we never see them HealthKit data is never sold or shared SUBSCRIPTION INFORMATION SleepWizard Premium unlocks all features including sleep tracking, sleep debt management, AI coaching, smart scheduling, contextual check-ins, advanced trends, and data export. Annual: $29.99/year ($2.50/month) — includes 14-day free trial Monthly: $3.99/month Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the rate of your selected plan. You can manage and cancel your subscription in your App Store account settings. Any unused portion of a free trial period will be forfeited when you purchase a subscription. Terms of Service: https://sleepwizard.app/terms Privacy Policy: https://sleepwizard.app/privacy GET YOUR SLEEP TOGETHER Download SleepWizard and start your 14-day free trial. No credit card required to start.

Screenshots

ReViiV4 screens
Sleepwizard4 screens

Verdict

The call

The clearest difference is update cadence: Sleepwizard at every 4 days against ReViiV's monthly. Sleepwizard also leads on review sentiment (100% vs 75%). ReViiV's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.2). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ReViiV sells 2 in-app purchases, starting at $0.99 per month and Sleepwizard sells 6 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ReViiV ships an update monthly, Sleepwizard every 4 days. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
ReViiV versus Sleepwizard: the parameters behind the verdict, then further details
ParameterReViiVSleepwizard
PriceFreeFree
Rating4.5 (8 ratings) — better—
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings8 — better—
Update frequencyMonthlyEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better26.2
Further details — not scored
Size25 MB18 MB
Age rating12+4+
DeveloperMartysoft LLCJOSEPH PETEUL

Customer experience

ReViiV

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Sleepwizard

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

ReViiV

Subscriptions2
  • Long Haul Breathing Therapy3 Days trial$0.991 Month
  • Long Haul Breathing Therapy3 Days trial$6.991 Year
6 purchases

Sleepwizard

Subscriptions6
  • Lapwizard tracking$1.991 Month
  • SleepWizard Premium$3.991 Month
  • Sleepwizard Premium$6.991 Month
Show 3 more
  • Sleepwizard tracking14 Days trial$14.991 Year
  • SleepWizard Premium14 Days trial$29.991 Year
  • Sleepwizard Premium14 Days trial$49.991 Year

Questions

Is ReViiV free?
ReViiV is free to download, with in-app purchases available.
Is Sleepwizard free?
Sleepwizard is free to download, with in-app purchases available.
Do ReViiV or Sleepwizard have ads?
Neither ReViiV nor Sleepwizard shows ads.
Which is updated more often, ReViiV or Sleepwizard?
ReViiV ships an update monthly, and Sleepwizard every 4 days. Most recently, ReViiV was updated on September 29, 2026 and Sleepwizard on October 6, 2026.

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