Comparison

Nessa vs Heart Plot

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

Head to head
About

Nessa

Features
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Nessa: Your Personal AI Wellness Coach Unlock the full potential of your health data with Nessa, the intelligent wellness companion that turns your Apple Health metrics into actionable coaching. Nessa doesn't just track your data; she analyzes it to provide deep, personalized insights into your nutrition, activity, and recovery. Key Features: * Instant AI Meal Logging: Skip manual entry. Snap a photo of your food, and Nessa’s advanced AI estimates calories and macros. * Deep Health Analysis: Nessa connects with Apple HealthKit to monitor vitals like heart rate, HRV, and sleep. Tap any metric for an AI analysis of your 7-day trends. * Personalized Recommendations: Get data-driven advice. Whether you need more protein or better sleep, Nessa provides the "why" and "how." * Sleep Readiness Score: Nessa analyzes recent stress, activity, and vitals to help you optimize your recovery. AI Transparency & Privacy: Nessa utilizes the OpenAI API to provide health insights. By using the app, you consent to sharing specific HealthKit metrics (Vitals, Activity, Sleep) with OpenAI for analysis. Data is transmitted securely, anonymized, and is NOT used to train AI models. You can revoke consent at any time in settings. Subscription Information: Nessa offers an auto-renewable monthly subscription ("Nessa Premium") to access all AI-powered analysis and logging features. * Title: Nessa Premium * Length: 1 Month * Price: $1.99 per month Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your account settings on the App Store. Medical Disclaimer: Nessa is NOT a medical device. The insights and recommendations provided are for informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Privacy Policy: https://lucasccipolla.github.io/Wellness-AI/ Terms of Use (EULA): https://lucasccipolla.github.io/Wellness-AI/terms/

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 for the Polar H10 chest strap. It visualizes your heart's rhythm in real time using Lorenz (PoincarΓ©) plotting. By measuring the precise RR intervals (the time between two heartbeats), Heart Plot maps your heart's behavior onto an X-Y plot. This shows patterns that a simple pulse reading never reveals. SEE YOUR HEART RHYTHM IN REAL TIME β€’ Live Lorenz plot: watch the pattern grow with every beat. β€’ Extra beats at a glance: Heart Plot estimates premature beats and sorts them into two groups, supraventricular (SVES) and ventricular (VES) extra systoles. Counts and percentages appear below the plot. β€’ Trend chart: tap the SVES/VES values to see how often extra beats occurred per 15 minutes over the whole recording. β€’ Capture episodes: useful for documenting an intermittent event to discuss with your doctor. β€’ Fitness & HRV: follow your heart rate variability (RMSSD) during rest or training. β€’ Built for endurance: from a quick check to a 24–48 hour continuous measurement. HEAR YOUR HEART Every beat of your own heart can be played as a short tick, in your real rhythm. The sound is delayed by about 2 seconds because of Bluetooth transmission and smoothing. It also works with the screen off or the app in the background, so you can follow your heartbeat by ear without looking at the display. β€’ Optional separate beep for each detected SVES or VES. You can hear a premature beat as it happens, even when the screen can't stay on. β€’ Beat sound and extra-beat beep can be switched on independently. For example, you can stay silent except for extra beats. KEY FEATURES β€’ High-resolution data: every RR interval straight from the Polar H10. β€’ Stay-Awake mode: keeps the screen on during long measurements. β€’ Session recovery: an interrupted recording can be resumed after a connection loss or app restart. β€’ Load & review: open a previously recorded CSV file to view its plot, HRV and extra-beat statistics. β€’ Data export: share raw data (RR intervals, timestamps, beat classification) as a CSV file via the Apple Share Sheet for Excel, Python or R. β€’ Free to use: no paywall. Optional tips support development. PRIVACY FIRST Your health data stays with you. Heart Plot has no accounts and no cloud servers. Measurements are stored only on your iPhone until you export or share them. MEDICAL DISCLAIMER Heart Plot is not a medical device. It is a data visualization tool for informational, educational and fitness purposes. It does not diagnose, treat, cure or prevent any condition, and it is not a substitute for an ECG or a Holter monitor. The SVES/VES detection is an estimate calculated only from the timing between heartbeats. It cannot see the shape of the ECG signal, so it can miss events, count false events and confuse the two types. Results are indicative only and must not be used for diagnosis or treatment decisions. Sound feedback is delayed and may miss or add beats; do not rely on it for monitoring in any situation where your health depends on it. Always consult a physician to interpret your data. If you feel unwell, have chest pain, dizziness or palpitations, seek medical care immediately. Do not delay or stop treatment based on this app. REQUIREMENTS β€’ Polar H10 heart rate sensor (chest strap) β€’ iPhone with Bluetooth

Screenshots

Nessa3 screens
Heart Plot4 screens

Verdict

The call

Nessa and Heart Plot are too close to call on the numbers: across 5 compared parameters β€” price, ads, in-app purchases and device support among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Nessa sells 1 in-app purchase, starting at $1.99 per month and Heart Plot sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Nessa versus Heart Plot: the parameters behind the verdict, then further details
ParameterNessaHeart Plot
PriceFreeFree
Update frequencyβ€”Every 2 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS26.0 β€” better26.2
Further details β€” not scored
Size5 MB8 MB
Age rating17+4+
DeveloperLucas CipollaOle Luhrs

In-app purchases

1 purchases

Nessa

Subscriptions1
  • Assinatura Mensal Nessa2 variants$1.991 Month
3 purchases

Heart Plot

One-time3
  • Small Coffee$0.99
  • Regular Coffee$1.99
  • Large Coffee$2.99

Questions

Is Nessa free?
Nessa is free to download, with in-app purchases available.
Is Heart Plot free?
Heart Plot is free to download, with in-app purchases available.
Do Nessa or Heart Plot have ads?
Neither Nessa nor Heart Plot shows ads.

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