Heart Analyzer vs Reflex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Heart Analyzer
Gain deep insights into your heart health using data from your Apple Watch. Visualize trends, analyze metrics like Cardio Recovery and Heart Rate Zones, and generate detailed PDF reports. Offers advanced features and privacy-focused data handling.
- Dashboard with daily summaries
- Visualized heart rate and health data charts
- Health vital trend assessment
- Cardio Recovery and Heart Rate Zone analysis
- Exportable PDF heart reports
- ECG data comparison
- HRV rMSSD and heart rate calibration
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Heart Analyzer helps you track Heart Rate, HRV, Resting Heart Rate, Cardio Recovery, Sleep and ECG trends using Apple Watch. Analyze your Health data with advanced charts, insights, Heart Reports, widgets and detailed heart analytics powered by Apple Health. Set your own high and low heart rate alerts, take control of your HRV data in the new HRV Center, and see your sleep in detail with multiple sessions, naps and time out of bed. ------------------------------------------------ ■ Simple PRIVACY ------------------------------------------------ ◎ No third party analytics ◎ No data ever leaves your device ◎ No modifications to your health data ------------------------------------------------ ■ FEATURES ------------------------------------------------ ◎ The Dashboard - Where you can swipe between days, scroll through summaries and tap into the details ◎ Charts - Heart Rate and other Health data visualized through metrics and trends of any given day ◎ Insights - Effortlessly assess your Health Vital trends ◎ Heart Rate Alerts - Choose your own high and low heart rate limits, set mute times, and opt to be notified only on sustained changes ◎ HRV Center - Control the quality and context of the Heart Rate Variability data behind your trends ◎ Sleep - Multiple sleep sessions, naps and time out of bed, with your heart rate through the night ◎ Analytics Plus - Gain a unique understanding of important metrics such as Cardio Recovery, Heart Rate Zones and plenty more ◎ Heart Reports - Generate and export tailored PDFs including a large selection of metrics with custom timescales and password protection support ◎ Bookmarks - Highlight specific days of interest, make notes on relevant details ◎ Widgets - Interact with your Home Screen and track your Heart Rate, Resting Heart Rate trends and more at a glance ◎ ECGs - Compare and analyze data recorded by Apple Watch ◎ Advanced features - Including HRV rMSSD, Heart Rate Calibration, Custom Heart Rate Zones, Smart Heart Rate Recovery and more ------------------------------------------------ ■ APPLE WATCH ------------------------------------------------ ◎ A re-designed app showing your Heart Rate over the day ◎ Heart Rate Alerts on your wrist, with no complication needed on your watch face ◎ Charts with you on the go for Move, Exercise, Cardio Points, HRV, Blood Oxygen Saturation and Resting Heart Rate ◎ Workouts right on your wrist, tap into the detail as soon as you finish your exercise ◎ Customizable complications to keep you up to date with your Heart Rate and also support for Blood Oxygen Saturation, Heart Rate Variability and Resting Heart Rate trends HEALTH SUPPORT INCLUDES: - Heart Rate - Resting Heart Rate - Blood Pressure (Systolic & Diastolic) - Electrocardiogram (ECG/EKG) - Blood Oxygen Saturation (SPO2) - Cardio Fitness (VO2Max) - Heart Rate Variability (SDNN & rMSSD) - Respiratory Rate - Breathing Disturbances - Workouts - Sleep Times, Sessions & Naps - Heart Rate Recovery - Apple Fitness & Activity - High & Low Heart Rate Notifications Heart Analyzer Premium is available as an optional monthly or annual subscription. You can also choose a one-time Lifetime Access purchase. Payment will be charged to your Apple ID account. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current billing period. You can manage or cancel your subscription at any time in your App Store account settings. Additional Terms of Use: https://www.helixapps.co.uk/heart-analyzer-terms-of-use Please Note: - Heart Analyzer integrates with the Apple Health App to read your Heart Rate and other Health data - Heart Analyzer is available on iPad with iCloud sync for Apple Health data enabled. However, you still need an iPhone with a paired Apple Watch to generate Health data to display in Heart Analyzer - To get the most out of Heart Analyzer, an iPhone with a paired Apple Watch is required
Reflex
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Reflex measures in 20 seconds how sharp your mind is today – and shows you over weeks what really affects your reactions: sleep, activity, resting heart rate, HRV, coffee or exercise. One test a day, one number, one clear picture. NO ACCOUNT. NO TRACKING. NO ADS. All data stays on your device. Apple Health is only read, never shared and never stored in iCloud. The daily test is free and always will be. 20 SECONDS A DAY Tap as soon as the screen turns green – as fast as you can. Reflex measures the moment your finger touches the screen, detects false starts and lapses, and takes the median of all reactions. The method is a compact form of the Psychomotor Vigilance Task that sleep researchers use to measure alertness. YOUR DAY AT A GLANCE The Today tab shows your score compared to your 7-day average, your streak, your best and the day's health context: last night's sleep, yesterday's steps, resting heart rate, HRV and when you woke up. HISTORY OVER WEEKS Trend chart with moving average and personal best, every session with all trials in detail. A weekly recap sums up average, best day and the comparison to last week – shareable as an image. WHAT MAKES YOU FASTER After seven days with data, Reflex calculates the relationship between your reaction time and each health metric: "From 7 h of sleep: 8% faster." Not from studies, but from your own numbers. EXPERIMENTS Tag days with coffee, alcohol, exercise, stress or little sleep – and see what makes the difference for you. DAILY FORECAST In the morning, Reflex predicts from your sleep and heart data what today has in store. After the test you see whether you did better than expected. WIDGET, SIRI, REMINDER Home and Lock Screen widgets with today's score and streak, the "Start Reflex test" shortcut for Siri and the Action button, and a daily reminder only on days you haven't tested yet. REFLEX PRO – €7.99 PER YEAR OR €19.99 ONCE • All insights in detail: steps, resting heart rate, HRV, time since waking • Daily forecast "expected vs. actual" • Experiments: with and without coffee, exercise, alcohol • Patterns by weekday and time of day • Unlimited history, CSV export, weekly recap as an image • iCloud sync of your test results across your devices The yearly plan starts with 7 days free. The sleep insight and the daily test always stay free. Reflex is not a medical device. Its analyses show relationships in your own data and do not replace medical advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://csappworks.de/reflex/datenschutz
Screenshots
Verdict
The clearest difference is update cadence: Reflex at every 2 days against Heart Analyzer's weekly. Heart Analyzer's advantage is device support (3 vs 1). On price, ads, in-app purchases 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. Heart Analyzer sells 7 in-app purchases, starting at $3.99 per month and Reflex sells 2 in-app purchases, starting at $6.99 per year. Whichever you choose, the download price is not the number that matters.
Heart Analyzer ships an update weekly, Reflex every 2 days. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.
| Parameter | Heart Analyzer | Reflex |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (22K ratings) — better | — |
| Positive reviews | 84.2% of reviews | — |
| Number of ratings | 22K — better | — |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 17.5 — better | 18.0 |
| Further details — not scored | ||
| Size | 54 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Helix Apps LTD | Carsten Schaal |
Bugs and requests
Heart Analyzer
Reported bugs
3 issues- Premium features not working as expected
- Syncing issues between iPhone and Apple Watch
- Oxygen level tracking not functioning properly
Requested features
4 requests- Add blood pressure monitoring
- Allow generating reports for current month
- Improve ECG interpretation guidance
- Add option to customize Apple Watch complications
Reflex
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Heart Analyzer
- Monthly$3.991 Month
- Annual$19.991 Year
- Data Plus$9.99
- Reports Plus$9.99
- Analytics Plus$9.99
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- Complete Premium$24.99
- Lifetime Access$49.99
Reflex
- Reflex Pro – Yearly7 Days trial$6.991 Year
- Reflex Pro – Lifetime$17.99









