Comparison

HRV Tracker for Watch vs Gapless

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

Head to head
About

HRV Tracker for Watch

Monitor your body's stress levels and recovery by tracking heart rate variability (HRV) using your Apple Watch. Analyze trends, compare HRV to other health metrics, and receive personalized notifications to understand how daily activities impact your well-being.

Highlights
  • Track short-term and long-term HRV trends
  • Compare HRV to activity, sleep, and resting heart rate
  • Receive HRV change notifications on Apple Watch
  • View HRV Trend Summary (experimental)
  • Integrates with Apple Health app
  • Capture HRV data via Mindfulness app
Features
Read full description

Heart Rate Variability (HRV) measurements recorded by your Apple Watch can provide insight into the stress your body is experiencing. By using HRV Tracker to track short-term readings and long-term trends, you can see how factors such as daily workload, workouts, and sleep affect your body's readiness, recovery, and stress. Simply put, the higher your HRV, the better. ***Requires Apple Watch with watchOS 10 or later*** HRV Tracker for Watch integrates with the Health app and uses data stored in the Health app. To ensure your Apple Watch can record HRV measurements, open the Health app on your iPhone to check for existing data: Health app > Browse > Heart > Heart Rate Variability. In addition to automatic recordings, you can also use the Mindfulness app on your Apple Watch to capture new HRV data. Start a Breathe session, and once it ends, a new HRV measurement will appear in HRV Tracker. ***Compare HRV to Other Key Metrics*** Identify potential causes for changes in your HRV with Comparison Charts. -Compare your HRV to relevant health metrics such as activity, sleep, and resting heart rate. ***Follow Long-Term HRV Trends*** Track long-term HRV trends on your iPhone and compare short-term readings to your long-term averages. -Experience smarter insights with the new HRV Trend Summary feature (experimental). Available on Apple Intelligence powered devices running iOS 26. ***Get Notified on Your Apple Watch*** HRV Tracker helps you spot changes in your HRV by monitoring your data in the background and notifying you when your HRV falls below or rises above your preferred levels. -Tracks individual readings as well as 24-hour and 7-day averages. -You can customize the default notification thresholds in the Apple Watch app. -For notifications to work properly, add HRV Tracker to your Watch Face. -Note that notifications may be delayed due to factors like low battery. ***And More*** Track your HRV in multiple ways on your Apple Watch and iPhone. -Choose from various Home Screen widgets or Watch Face complications -Customize charts and views in settings -Scroll and tap on charts for additional insights ***Privacy*** Your privacy is really important to us — we do not collect any data from this app. ***How Is It Measured?*** HRV Tracker uses heart rate variability measurements calculated by detecting the variation between individual heartbeats. Your Apple Watch automatically measures HRV in the background and stores it in HealthKit. HealthKit uses SDNN (Standard Deviation of NN intervals), which reflects the standard deviation of time between normal heartbeats (measured in milliseconds). Please note that many of the features mentioned above are available only to subscribers. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula If you have any questions, we’re happy to help: contact@sydvesti.com

About

Gapless

Features
Read full description

Gapless is the minimalist challenge app designed for those who find motivation in direct comparison. Whether it's fitness, reading, or building habits – create a 1v1 duel or a group challenge in seconds and see exactly who’s leading.

Screenshots

HRV Tracker for Watch4 screens
Gapless3 screens

Verdict

The call

The clearest difference is in-app purchases: Gapless at none against HRV Tracker for Watch's 2. Gapless also leads on update cadence (every 2 weeks vs monthly) and iOS requirement (15.1 vs 18). 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. HRV Tracker for Watch sells 2 in-app purchases, starting at $2.99 per month. Gapless asks for nothing beyond the download.

UpkeepUpdate frequency

HRV Tracker for Watch ships an update monthly, Gapless every 2 weeks. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard3 real differences · 7 level
HRV Tracker for Watch versus Gapless: the parameters behind the verdict, then further details
ParameterHRV Tracker for WatchGapless
PriceFreeFree
Rating4.5 (948 ratings) — better—
Positive reviews41.4% of reviews—
Number of ratings948 — better—
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS1815.1 — better
Further details — not scored
Size25 MB42 MB
Age rating4+12+
DeveloperSydvesti OyKian Salem

In-app purchases

2 purchases

HRV Tracker for Watch

Subscriptions2
  • Monthly Premium$2.991 Month
  • Yearly Premium$19.991 Year
None

Gapless

No in-app purchases

Questions

Is HRV Tracker for Watch free?
HRV Tracker for Watch is free to download, with in-app purchases available.
Is Gapless free?
Gapless is free to download, with no in-app purchases.
Do HRV Tracker for Watch or Gapless have ads?
Neither HRV Tracker for Watch nor Gapless shows ads.
Which is updated more often, HRV Tracker for Watch or Gapless?
HRV Tracker for Watch ships an update monthly, and Gapless every 2 weeks. Most recently, HRV Tracker for Watch was updated on October 24, 2026 and Gapless on October 19, 2026.

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