Comparison

Heart Plot vs ScaleTrack

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

Head to head
About

Heart Plot

Features
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IMPORTANT: This app REQUIRES a Polar H10 heart rate sensor. Heart Plot is a specialized tool designed specifically for use with the Polar H10 chest strap to visualize your heart’s rhythm in real-time using advanced Lorenz (Poincaré) plotting. By measuring the precise RR-intervals (the time between two heartbeats), Heart Plot maps your heart's behavior onto an X-Y axis. This visualization reveals the "geometry" of your heart rate, allowing you to see patterns that a simple pulse reading would never show. SEE YOUR HEART RHYTHM IN REAL-TIME - Whether you are a "data geek," a fitness enthusiast, or someone monitoring for heart irregularities, Heart Plot provides a live, growing window into your cardiac health. - Detect Irregularities: Easily spot premature contractions, or skipped beats as they happen. The visual patterns created on the Lorenz plot can help identify specific types of arrhythmia. - Capture Episodes: Perfect for users trying to "catch" an intermittent heart event to share with their healthcare provider. - Fitness & HRV: Monitor your Heart Rate Variability (HRV) visually during rest or training sessions. - Built for Endurance: Heart Plot is optimized for long-term monitoring. Whether it’s a quick check, a fitness session, or a 24-hour to 48-hour continuous measurement, the app handles long data sets with ease. KEY FEATURES: - Live Lorenz Plotting: Watch your heart’s "signature" form as the plot grows with every beat. - Stay-Awake Mode: A dedicated toggle to keep your screen on for constant monitoring during workouts or clinical observation. - High-Resolution Data: Captures every RR-interval directly from the Polar H10. - Data Export: Done with your measurement? Download the raw data as a CSV file (including all RR-intervals and timestamps) via the standard Apple Share Sheet for further analysis in Excel, Python, or R. PRIVACY FIRST Your health data is yours alone. Heart Plot does not store your data on any cloud servers. All measurements remain locally on your iPhone until you choose to export them or take a screenshot. MEDICAL DISCLAIMER: Heart Plot is a data visualization tool and is not intended to diagnose, treat, or prevent any medical condition. Please consult with a medical professional to interpret the data. The patterns revealed in the Lorenz plot are for informational and educational purposes. Requirements: - Polar H10 Heart Rate Sensor (Chest Strap) - Bluetooth-enabled iPhone

About

ScaleTrack

Features
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Track your weight in two seconds: just snap a photo of your scale. ScaleTrack reads the number off any scale's display, right on your iPhone. Confirm it, and it's saved and charted. It works with the scale you already own: if it shows a number, ScaleTrack reads it. WHY SCALETRACK • Works with any scale: point, snap, done. • Two-second weigh-ins: snap → confirm → saved. • A clean trend chart from your very first reading. • Prefer typing? Log with the keyboard any time. SEE PROGRESS, NOT NOISE • A smoothed trend line shows your true direction through daily ups and downs. • Weekly pace, a projected goal date, and a "what will I weigh by then?" picker. • Milestones on the way to your goal, badges for showing up, streaks that add up. • Your year in review, plus a shareable PDF report. • Switch lb ⇄ kg anytime. Export to CSV whenever you want. MORE THAN THE SCALE • Add a note, tags, or how you felt to any weigh-in. • BMI at a glance once you set your height. • Track body fat percentage and waist alongside weight, synced with Apple Health. • Optional progress photos with a lineup guide and side-by-side compare, stored on your device, seen only by you. MAKE IT YOURS • Dark mode: the new Ink palette, easy on late-night weigh-ins. • Home Screen, Lock Screen and Control Center shortcuts; Siri and the Action button too. • Optional daily reminder and a Sunday weekly summary. PRIVATE BY DESIGN • Your data lives on your iPhone and, only if you turn it on, in your own private iCloud. • Scale photos are read on-device with Apple's built-in text recognition, then discarded. • Progress photos stay on your device, for your eyes only. • Back up and restore your data yourself, any time. Just you and the number, over time.

Screenshots

Heart Plot4 screens
ScaleTrack4 screens

Verdict

The call

The clearest difference is in-app purchases: ScaleTrack at none against Heart Plot's 1. ScaleTrack also leads on iOS requirement (17.0 vs 26.2). 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. Heart Plot sells 1 one-off in-app purchase. ScaleTrack asks for nothing beyond the download.

UpkeepUpdate frequency

Heart Plot ships an update every 2 weeks, ScaleTrack fortnightly. The most recent releases landed on August 25, 2026 and September 22, 2026 respectively.

Scorecard2 real differences · 4 level
Heart Plot versus ScaleTrack: the parameters behind the verdict, then further details
ParameterHeart PlotScaleTrack
PriceFreeFree
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone
Requires iOS26.217.0 — better
Further details — not scored
Size3 MB14 MB
Age rating4+4+
DeveloperOle LuhrsGAGAN BHATTARAI

In-app purchases

1 purchases

Heart Plot

One-time1
  • Heart Plot Premium$1.99
None

ScaleTrack

No in-app purchases

Questions

Is Heart Plot free?
Heart Plot is free to download, with in-app purchases available.
Is ScaleTrack free?
ScaleTrack is free to download, with no in-app purchases.
Do Heart Plot or ScaleTrack have ads?
Neither Heart Plot nor ScaleTrack shows ads.
Which is updated more often, Heart Plot or ScaleTrack?
Heart Plot ships an update every 2 weeks, and ScaleTrack fortnightly. Most recently, Heart Plot was updated on August 25, 2026 and ScaleTrack on September 22, 2026.

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