Comparison

Sovrynd vs HRVSpark

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

Head to head
About

Sovrynd

Features
Read full description

The Problem Growth doesn’t come from comfort. It comes from friction — confronting what you’ve been avoiding. The Solution Sovrynd is a self-attunement engine that blends HRV tracking, mindfulness, journaling, and energy center insights to help you stay aligned with who you want to be. The Daily 5 Morning prompts push you toward discipline, clarity, and mindfulness Evening check-ins mark the day a win or a miss Spot patterns, track choices, and build consistency NDVDL Score Your Nervous-System-Derived Vital Daily Level is a unique biometric score based on HRV, heart rate, sleep, and respiration. It shows you how you’re really doing inside — beyond mood or willpower. Energy Centers Map your biometrics + reflections to identify where you’re out of sync — then take guided steps to realign. Why Sovrynd? Combines HRV biofeedback, mindfulness, and journaling Daily structure without overwhelm Designed for anyone seeking clarity, resilience, and balance

About

HRVSpark

Visualize your raw heart rate variability data directly on your Apple Watch face with a dynamic sparkline complication. Get immediate insights into your body's trends without opaque scores or labels. A companion iPhone app provides detailed views and guidance.

Highlights
  • Raw HRV sparkline complication
  • 8-hour free complication
  • 24/7, 7-day, 30-day Pro views
  • Circular gauge and corner complications
  • iPhone companion app
  • No interpretation layer
  • Complication-first design
Features
Read full description

HRVSpark puts your heart rate variability on your Apple Watch face as a sparkline, a gauge, or a corner complication. It shows the SDNN readings saved in Apple Health and nothing more. WHAT YOU GET • Three free 8-hour complications: a sparkline, a gauge, and a corner • Seven Pro complications across 24-hour, 7-day, and 30-day windows • Gaps left visible when your watch took no readings • An iPhone app with a live gallery of every complication and setup help JUST YOUR HRV HRVSpark shows your SDNN values across useful time windows without turning them into a readiness, stress, or recovery score. What they mean for your day is up to you. BUILT FOR THE WATCH FACE The complications are designed for quick checks on the wrist. Each gauge places a recent value between the low and high of its window. The Apple Watch app works without the iPhone app and keeps a record of your daily averages. The iPhone app adds older days whenever you open it. ONE-TIME PRO UNLOCK Download free and use the three 8-hour complications. Unlock all ten with a single one-time purchase. No subscription, account, ads, or telemetry. PAIR IT WITH RHRSPARK RHRSpark gives the same direct view of resting heart rate, with recent sedentary heart rate and Apple's daily resting heart rate. HealthKit data stays on your devices and moves only between your iPhone and Apple Watch through Apple frameworks. HRVSpark may request a small configuration file from filamentlabs.io to show current product messages. That request contains no health data. If you claim the supporter thank-you, HRVSpark sends Apple's signed record of your HRVSpark purchase to filamentlabs.io so each purchase receives one RHRSpark Pro code. That record contains no health data. HRVSpark is for informational purposes only. It does not provide medical advice or diagnose, treat, cure, or prevent any medical condition.

Screenshots

Sovrynd4 screens
HRVSpark4 screens

Verdict

The call

The clearest difference is in-app purchases: Sovrynd at none against HRVSpark's 2. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HRVSpark sells 2 one-off in-app purchases. Sovrynd asks for nothing beyond the download.

UpkeepUpdate frequency

Sovrynd ships an update every 5 days, HRVSpark weekly. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 9 level
Sovrynd versus HRVSpark: the parameters behind the verdict, then further details
ParameterSovryndHRVSpark
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 5 days — betterWeekly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS16.6 — better17.0
Further details — not scored
Size21 MB6 MB
Age rating4+4+
DeveloperKevin CramerJoel Farthing

In-app purchases

None

Sovrynd

No in-app purchases

2 purchases

HRVSpark

One-time2
  • HRVSpark Pro$0.99
  • HRVSpark Tip Jar$4.99

Questions

Is Sovrynd free?
Sovrynd is free to download, with no in-app purchases.
Is HRVSpark free?
HRVSpark is free to download, with in-app purchases available.
Do Sovrynd or HRVSpark have ads?
Neither Sovrynd nor HRVSpark shows ads.
Which is updated more often, Sovrynd or HRVSpark?
Sovrynd ships an update every 5 days, and HRVSpark weekly. Most recently, Sovrynd was updated on October 25, 2026 and HRVSpark on October 14, 2026.

Other comparisons