Comparison

Heart Analyzer vs The ARK

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

The ARK

Features
Read full description

The The ARK app makes it very easy for you to manage your The ARK account, book into our classes and events and keep in touch with us. You can easily message us if you have a question or want to share something with them. You can also follow our public feed to see any announcements we make, promos we run, or content we share.

Screenshots

Heart Analyzer4 screens
The ARK4 screens

Verdict

The call

The clearest difference is in-app purchases: The ARK at none against Heart Analyzer's 7. The ARK also leads on iOS requirement (15.1 vs 17.5). Heart Analyzer's advantage is update cadence (weekly vs every 5 months). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Heart Analyzer sells 7 in-app purchases, starting at $3.99 per month. The ARK asks for nothing beyond the download.

UpkeepUpdate frequency

Heart Analyzer ships an update weekly, The ARK every 5 months. The most recent releases landed on October 20, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 7 level
Heart Analyzer versus The ARK: the parameters behind the verdict, then further details
ParameterHeart AnalyzerThe ARK
PriceFreeFree
Rating4.7 (22K ratings) — better—
Positive reviews84.2% of reviews—
Number of ratings22K — better—
Update frequencyWeekly — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS17.515.1 — better
Further details — not scored
Size54 MB55 MB
Age rating4+4+
DeveloperHelix Apps LTDMomence, Inc.

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

The ARK

Not enough reviews yet to summarise bugs or requests.

In-app purchases

7 purchases

Heart Analyzer

Subscriptions2
  • Monthly$3.991 Month
  • Annual$19.991 Year
One-time5
  • Data Plus$9.99
  • Reports Plus$9.99
  • Analytics Plus$9.99
Show 2 more
  • Complete Premium$24.99
  • Lifetime Access$49.99
None

The ARK

No in-app purchases

Questions

Is Heart Analyzer free?
Heart Analyzer is free to download, with in-app purchases available.
Is The ARK free?
The ARK is free to download, with no in-app purchases.
Do Heart Analyzer or The ARK have ads?
Neither Heart Analyzer nor The ARK shows ads.
Which is updated more often, Heart Analyzer or The ARK?
Heart Analyzer ships an update weekly, and The ARK every 5 months. Most recently, Heart Analyzer was updated on October 20, 2026 and The ARK on September 28, 2026.

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