Slumber+ vs Varzo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slumber+
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Slumber+ is a sleep monitoring app that supports Garmin wearable devices. It uses more biological features than native software and uses machine learning for sophisticated sleep status classification. Slumber+ provides fundamental sleep, stress, and body-battery energy index. Shortly, we will provide "Slumber+ Premium," an AI algorithm based on big data, conduct group analysis according to demographic characteristics and lifestyles and give more customized suggestions on ways to improve sleep. This software supports Garmin wearable devices. Users must have a Garmin account and install the Garmin Connect software.
Varzo
This app analyzes your Apple Watch and Health data to provide insights into recovery, sleep, strain, and energy levels. It offers AI-powered coaching and personalized goal setting to help you train smarter and recover better. All data processing is done privately on your device.
- Recovery Score analysis
- Sleep stage tracking
- Cardiovascular strain monitoring
- Real-time energy level tracking
- Personalized goal setting
- 7, 30, 90-day trend analysis
- On-device AI coaching
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Know your body. Optimize your recovery. Built for Apple Watch owners. Varzo turns the heart rate, HRV and sleep data your watch already collects into insights about your recovery, sleep, strain and energy — all processed privately on your device. An Apple Watch is required. Varzo reads the data your watch records; it does not replace it. ON YOUR WRIST, AND AT A GLANCE • Apple Watch app — Recovery, Strain and Body Battery on your wrist • Watch face complications in four styles, so your recovery is there every time you check the time • Home Screen and Lock Screen widgets on iPhone • Everything syncs from your iPhone automatically — nothing extra to set up AI-POWERED COACHING Personalized insights powered by Apple Intelligence. Get tailored coaching on your recovery, sleep, strain, and energy with all AI processing happening entirely on your device. On devices without Apple Intelligence, smart rule-based insights keep you informed. FOUR METRICS THAT MATTER • Recovery Score — Wake up knowing if your body is ready to push hard or needs rest. Calculated from your HRV, resting heart rate, and sleep quality. • Sleep Analysis — Go beyond hours slept. See your sleep stages, efficiency, and consistency to understand what truly restful sleep looks like for you. • Strain Score — Track your cardiovascular load throughout the day. Balance high-intensity training with proper recovery to maximize results. • Body Battery — Watch your energy level change in real-time. Start each day with a full charge and see how activity depletes and rest restores your reserves. SET GOALS THAT MOVE YOU FORWARD Create personalized weekly goals for workouts, steps, calories, hydration, and more. Track your progress with intuitive visualizations and stay motivated with daily insights. TRENDS & INSIGHTS View your 7, 30, and 90-day trends. Understand your personal baselines and see how your recovery, sleep, and strain evolve over time. PRIVACY FIRST — WE COLLECT NOTHING No analytics. No tracking. No accounts. No servers. Your recovery, sleep, heart rate and every other health metric are read from Apple Health, processed entirely on your iPhone, and never leave it — never uploaded, never stored in the cloud, never shared, never tied to an identity. AI coaching runs on-device using Apple Intelligence, so even your insights are generated privately. There is no sign-up, because there is nothing for us to store. SUBSCRIPTION TERMS Varzo offers an auto-renewable annual subscription with a 14-day free trial. Payment is charged to your Apple ID account when the free trial ends, unless you cancel at least 24 hours before it finishes. Subscriptions renew automatically each year unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://varzo.ai/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: Slumber+ at none against Varzo's 1. Slumber+ also leads on iOS requirement (12.0 vs 17.0). On price, update cadence, 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
Both are free to download. Varzo sells 1 in-app purchase, starting at $9.99 per year. Slumber+ asks for nothing beyond the download.
Slumber+ ships an update every 5 days, Varzo every 6 days. The most recent releases landed on October 13, 2026 and September 30, 2026 respectively.
| Parameter | Slumber+ | Varzo |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 5 days — better | Every 6 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Li Te Chen | Pankaj Sharma |
In-app purchases
Slumber+
No in-app purchases
Varzo
- varzo Annual14 Days trial$9.991 Year









