Comparison

HeartBond vs Eye Flow

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

Head to head
About

HeartBond

Visualize your heart rate, HRV, and sleep stages with this free companion app. Seamlessly sync data between your iPhone and Mac, with intuitive gestures and customizable interfaces. Track your health journey across your Apple ecosystem.

Highlights
  • Heart Rate & HRV Insights
  • Sleep Stage Visualization
  • Weight Tracking
  • Smart Sync Control
  • Apple Ecosystem Integration
  • Customizable Interface
  • Dark Mode Support
Features
Read full description

HeartBond: Your Free Heart Health Companion for iPhone and Mac Experience the magic of your heart data flowing automatically between iPhone and Mac - you choose which days to sync. HeartBond transforms your health journey through elegant heart rate, HRV (Heart Rate Variability), and sleep stage visualizations across your entire Apple ecosystem, completely free. KEY FEATURES: • Heart Rate & HRV Insights - Gain deeper understanding of stress, recovery, and overall well-being • Sleep Stages - Awake, REM, Core, and Deep sit behind each day's graph, with time asleep for the night • Weight - Your weight from Health shows beside each day, in kilograms, pounds, or stone. Optional, and easy to switch off • Smart Sync Control - Simple taps to choose which days to share • Natural Gestures - Tap to view, hold to manage, drag to resize • Apple Ecosystem Integration - Seamless connection between iOS and macOS • Personalized Interface - Customize colors and graph layouts to your preference • Dark Mode Support - Comfortable viewing in any lighting condition DESIGNED FOR YOU: • 100% Free Universal App - One app for all your Apple devices, no hidden costs • Intuitive Controls - Three simple gestures control everything • Fluid Navigation - Familiar iOS interactions you already know • Privacy-Focused - Your health data stays secure and private WHY CHOOSE HEARTBOND: Track your heart health on iPhone during workouts, then choose which data to analyze on your Mac's larger display. Perfect for fitness enthusiasts, health-conscious individuals, or anyone interested in their heart rate patterns - all at no cost. MEDICAL DISCLAIMER: HeartBond provides visualization of heart rate and sleep data for informational purposes only. It is not a medical device and should not be used for diagnosis or treatment. Always consult healthcare professionals for medical advice. Download HeartBond today - Your heart's story, beautifully told across all your devices, completely free.

About

Eye Flow

Features
Read full description

Tired, strained eyes after a long day of screens? Eye Flow turns eye exercises into a 3-minute habit. Pick a goal and a length. Watch the movement, then mirror it at your own pace. Every session is guided, timed, and quiet — no ads, no account, no feed. WHAT'S INSIDE • 16 guided exercises — blinking, horizontal and vertical sweeps, circle flow, diagonal sweeps, near-and-far focus, nose focus, distance gaze, Jatru Trataka, Wide Watch, palming, black dot gaze • 4 stereograms, plus a Face Fusion warm-up that teaches you free-viewing first • 3, 5, or 10 minute sessions, built from the goal you choose • 9 off-screen practices — colour hunt, shape hunt, green break, candle gaze, horizon breathing, soft-focus meditation, look-and-remember, blink awareness, follow one bird • 11 plain-language articles on how near and far focus actually works — including which popular eye-training claims don't hold up • A daily reminder and a record of completed sessions CHOOSE YOUR GOAL • Relax tired eyes — release strain after long screen days with blinking and palming • Sharpen near focus — train the focusing muscles you use for reading and close work • Rest distance vision — breaks that pull your focus off the screen and out to the horizon • Improve eye mobility — widen your range of motion and switch focus faster BUILT FOR TIRED EVENINGS Dark interface. No bright flashes, no leaderboards, no streak guilt. Eye Flow works fully offline and keeps everything on your device — no sign-up, nothing uploaded. EYE FLOW PRO — ONE LIFETIME PURCHASE No subscription, ever. Pro unlocks: • Custom sessions — build and reorder your own routines • Work-break mode — repeating reminders to leave the screen during work hours • 8 advanced thumb-tracking exercises — hourglass paths, sideways figure eight, diagonal and rounded follows • The full set of 20 stereograms A NOTE ON EXPECTATIONS Eye Flow is designed to help tired eyes feel more comfortable through gentle practices and screen breaks. It does not diagnose or treat eye conditions, and it is not a substitute for an eye exam. Stop if you feel pain, dizziness, double vision, or new or worsening blur.

Screenshots

HeartBond4 screens
Eye Flow4 screens

Verdict

The call

The clearest difference is in-app purchases: HeartBond at none against Eye Flow's 1. 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. Eye Flow sells 1 one-off in-app purchase. HeartBond asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 8 level
HeartBond versus Eye Flow: the parameters behind the verdict, then further details
ParameterHeartBondEye Flow
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 daysEvery 2 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.0 — better16.4
Further details — not scored
Size11 MB54 MB
Age rating4+4+
DeveloperDaniel ZhangStanislav Pavlenko

In-app purchases

None

HeartBond

No in-app purchases

1 purchases

Eye Flow

One-time1
  • Eye Flow Pro$9.99

Questions

Is HeartBond free?
HeartBond is free to download, with no in-app purchases.
Is Eye Flow free?
Eye Flow is free to download, with in-app purchases available.
Do HeartBond or Eye Flow have ads?
Neither HeartBond nor Eye Flow shows ads.
Which is updated more often, HeartBond or Eye Flow?
HeartBond ships an update every 2 days, and Eye Flow every 2 days. Most recently, HeartBond was updated on October 30, 2026 and Eye Flow on October 31, 2026.

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