Pace by Athlytic vs HRV Sync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pace by Athlytic
This app analyzes your Apple Watch health data to provide clear, plain-language insights into your well-being. It monitors over 35 health signals, learns your personal baselines, and alerts you to significant changes, offering explanations and celebrating improvements without overwhelming you with raw numbers.
- Reads Apple Watch health data
- Plain-language health summaries
- Monitors 35+ health signals
- Learns personal baselines
- Alerts for significant changes
- Health pattern discovery
- AI-powered health assistant
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Pace by Athlytic reads your Apple Watch health data and tells you what actually matters -- in plain language, not just charts and numbers. Most health apps overwhelm you with scores, rings, and graphs. Pace takes a different approach. It monitors 35+ health signals, learns what's normal for you, and only speaks up when something is worth your attention. HOW IT WORKS Just wear your Apple Watch. Pace does the rest. No data entry required, no numbers to interpret. Each day, Pace checks your health data and gives you a clear summary of how you're doing. WHAT PACE TRACKS Sleep - Duration, quality, efficiency, and consistency - Deep, REM, and core sleep stages - Breathing disturbance tracking Vitals - Heart rate variability (HRV) and resting heart rate - Blood pressure trends with AHA classification - Blood oxygen, respiratory rate, and wrist temperature Cardio Fitness - VO2 Max tracking with age and sex-adjusted context - Walking heart rate trends Activity - Steps with personalized pacing and goal tracking - Active calories, flights climbed, and standing hours - Time in daylight with weather-aware context Workouts - Automatic detection from Apple Watch - Duration, calories, and heart rate summaries Body Composition - Weight, lean body mass, body fat percentage, and FFMI - Personalized baseline ranges with trend detection Mobility - Walking speed, steadiness, and symmetry - Step length, stair speed, and six-minute walk distance - 8 metrics that research links to long-term health SMART HEALTH INSIGHTS Pace learns your personal baselines over 60 days, then alerts you when something shifts. Instead of showing you a number and hoping you know what it means, Pace explains it: - "Your heart rate variability is lower than usual" - "Your blood pressure trend is elevated -- the AHA considers this Stage 1" - "Your walking speed has declined -- this is one of the strongest predictors of overall health" And when things improve, Pace tells you that too. No open loops -- when a concern resolves, you'll know about it. HEALTH PATTERNS Pace discovers correlations hidden in your data -- like how alcohol affects your HRV, or how daylight impacts your deep sleep. Every pattern is statistically validated and backed by peer-reviewed research. No guessing, no astrology. WHAT MAKES PACE DIFFERENT - Conversational health summaries written in plain English - Alerts you when something needs attention, celebrates when things improve - All monitoring is passive -- just wear your Apple Watch - Personal baselines, not one-size-fits-all thresholds - Weather-aware context for activity and daylight - Every clinical threshold is backed by peer-reviewed research PREMIUM FEATURES - AI-powered health assistant -- ask questions about your data in plain English - Health pattern discovery across 35+ metrics - Smart notifications when something shifts - Step goal celebrations with streak tracking - Weekly health summary notifications - Exportable PDF health reports to share with your doctor - Trend charts for all metrics - Step pacing and detailed concern views - Reads alcohol, caffeine, hydration, and nutrition data from Apple Health YOUR PRIVACY All analysis happens on your iPhone using Apple's on-device AI. No cloud uploads, no accounts, no tracking, no data selling. Your health data never leaves your phone. Pace by Athlytic -- your health, explained.
HRV Sync
Effortlessly sync your Heart Rate Variability (HRV) data to the iOS Health app. Connect your fitness account to view HRV trends alongside other health metrics. Prioritizes user privacy with secure token-based login and no data collection.
- One-tap HRV data sync to Health app
- View HRV history and trends
- Secure OAuth login
- Custom date range import
- Privacy-focused data handling
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Track your Heart Rate Variability trends by syncing HRV data to the iOS Health app. HRV Sync connects to your fitness account and imports your daily HRV measurements, making them available alongside all your other health metrics in one place. FEATURES • One-tap sync of HRV data to the Health app • View your HRV history and trends • Secure OAuth login — your password is never stored • Choose custom date ranges to import HOW IT WORKS 1. Log in to your fitness tracker account 2. Select the date range to sync 3. Tap Sync — your HRV data appears in the Health app PRIVACY FIRST • Your credentials are never stored — only secure tokens • Data syncs directly to your device • No data is collected or shared with third parties COMPATIBILITY Compatible with Garmin® fitness devices and accounts. --- This app is an independent product and is not affiliated with, endorsed by, or sponsored by Garmin Ltd. or its subsidiaries. Garmin® is a registered trademark of Garmin Ltd.
Screenshots
Verdict
The clearest difference is review sentiment: HRV Sync at 100% against Pace by Athlytic's 55%. HRV Sync also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.6). Pace by Athlytic's advantage is update cadence (every 11 days vs every 2 months) and ratings volume (61 vs 3). On price 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
Both are free to download. Pace by Athlytic sells 2 in-app purchases, starting at $4.99 per month. HRV Sync asks for nothing beyond the download.
HRV Sync holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Pace by Athlytic has 61 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 55% of Pace by Athlytic's written reviews are positive against 100% of HRV Sync's.
Pace by Athlytic ships an update every 11 days, HRV Sync every 2 months. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.
| Parameter | Pace by Athlytic | HRV Sync |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (61 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 55.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 61 — better | 3 |
| Update frequency | Every 11 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | MyndArc, LLC | Marcin Naglik |
Customer experience
Pace by Athlytic
HRV Sync
In-app purchases
Pace by Athlytic
- Pace Premium Monthly7 Days trial$4.991 Month
- Pace Premium Annual7 Days trial$29.991 Year
HRV Sync
No in-app purchases









